Ahead of the summer heat across the United Kingdom, REHUA, the globally renowned polymer specialist, has upgraded their smart heating control, in order to be able to seamlessly transfer between heating and cooling. NEA Smart 2.0 Allowing developers and contractors to provide efficient heating and cooling from a single solution, the NEA Smart 2.0 uses a series of algorithms to regulate temperature. These algorithms allow the device to learn occupant habits and data from multiple sensors in floo...
It’s shaping up to be a long, hot summer for HVAC contractors and their customers. Disruptions in the nationwide supply chain that began during the COVID-19 pandemic still have not been resolved. Shutdowns last summer played havoc with the supply of parts, and suppliers are still playing catch up, as raw materials remain scarce. Furthermore, prices are going up among some components and key raw materials. Waiting times for parts can run into weeks or even months. Supply shortages of HVAC...
Hitachi introduces a new line of high-efficiency single-zone, mini-split systems, PRIMAIRY mini-split systems. Designed to meet the unique needs of small to mid-size properties such as shops, restaurants, and classrooms, the PRIMAIRY system is an energy-efficient and cost-effective option. Hitachi quality is evident throughout the product line. Features of the product line include: Brushless DC fan motors provide stable, precise, energy-efficient operation. Compact units and long piping ru...
Few data centers live in a world of ‘high’ density, a number that is a moving target, but many are moving to high[er] density environments. Owners of higher density data centers often aren’t aware of how many variables factor into cooling their equipment. The result is that they spend too much on shotgun solutions that waste capacity when they would be better served by taking a rifle shot approach. This means understanding the heat dispersion characteristics of each piece of eq...
Airedale has launched the latest in its EasiCool range of precision cooling units, EasiCool Evo². Updated with new technology and with an extended operating envelope, the efficient, compact, and flexible EasiCool Evo² has been specifically designed with the global small / edge data market in mind. Airedale R&D teams have worked hard to deliver improved efficiency, performance, and IoT functionality, with a cooling capacity of 31-98kW and an Energy Efficiency Ratio (EER)...
Artificial Intelligence (AI) is an emerging tool for a long list of applications, including the ability to analyze and ensure optimum performance of an HVAC system. Emerson’s Sensi Predict smart HVAC solution is an example of how AI can boost the capabilities of HVAC. It has been recognized with a Silver Edison Award in the Innovative Services – AI category. Sensi Predict smart HVAC solution Sensi Predict combines inputs from 10 sensors in an HVAC system and analyzes the performanc...
ABB’s Azipod® propulsion system has brought huge advances to the maritime industry, thanks to its efficiency gains, sustainability benefits and the increased maneuverability it offers any ship to which it’s fitted. Jukka Varis – responsible for this technology globally, who has worked with the system from the very beginning – and Ole-Jacob Irgens – an engineer by training, who now leads the sales and marketing initiative for ABB’s Azipod® system – share their experiences and knowledge. Azipod® propulsion is a gearless steerable propulsion system where the electric drive motor is housed within a pod outside the ship hull. Originally developed for icebreaking vessels, the Azipod® system can be adapted to suit almost any kind of ship. Today, over 25 different vessel types rely on Azipod® technology – from cruise ships to cargo carriers, icebreakers, ferries and superyachts. Efficiency and sustainability benefits Electrical power minimizes engine noise and vibration, ensuring a smoother, quieter ride Jukka explains: “Azipod® system looks similar to an outboard motor but is much bigger – the large unit weighs as much as a fully loaded Jumbo Jet. It can turn 360 degrees around its axis, creating thrust in any direction and resulting in much better maneuverability of the vessel.” Electrical power minimizes engine noise and vibration, ensuring a smoother, quieter ride. The true efficiency benefits of Azipod® propulsion have become more and more apparent over the past three decades, bringing higher performance, reliability and sustainability for vessels. cutting fuel consumption Azipod® system cuts fuel consumption by up to 20 percent compared to conventional shaftline propulsion. Ole-Jacob adds: “Since the first installation on a cruise ship 25 years ago, we have estimated that the industry has saved more than 1,000,000 tons of fuels from these cruise ships alone.” Vessels can have a shorter route between Europe and Asia, saving many days in transport" Azipod® propulsion has also opened opportunities for new shipping lanes that weren’t feasible before, such as the Northern Sea Route, cutting fuel consumption while negating the need for separate icebreaker assistance. Ole-Jacob explains: “Vessels can have a shorter route between Europe and Asia, saving many days in transport. To do that, you need vessels which can go through ice, something the unique features of Azipod® enable.” Azipod® propulsion With the varied benefits and many applications possible for Azipod® propulsion, the team is currently working on some interesting concepts. Ole-Jacob says: “One concept is to use Azipod® on floating power plants, which require thrusters to put them in position, keep them there and then be able to move again as required. Another interesting prospect is in the fish farming industry." "Traditionally, fish farms have been quite fixed but with these installations becoming bigger and bigger, they need to be more flexible and move around. There are definitely lots of groundbreaking applications coming in the future.”
Trane Technologies, a global climate innovator announced that its Board of Directors has appointed Gary Forsee, retired chair and CEO of Sprint Nextel Corporation and former president of the University of Missouri System, as a lead independent director, effective immediately. Business understanding “As a lead independent director, Gary will offer strategic insights, guidance, and expertise on governance matters as we create long-term value for all our stakeholders,” said Mike Lamach, chair and CEO, Trane Technologies. “Given his long tenure on the Board, Gary has a strong understanding of our businesses and end markets. In addition to his deep business and financial acumen, he brings unique experience and insights on talent management, technology and innovation, and strategic change. I look forward to working with him in this new capacity.” Member of the committee Forsee joined the Trane Technologies Board of Directors in 2007. He currently serves on the Board’s Compensation Committee, Technology and Innovation Committee, and Executive Committee, and since 2008 has chaired the Corporate Governance and Nominating Committee. Forsee will continue to chair this committee, recently rechartered as the Sustainability, Corporate Governance, and Nominating Committee, in addition to his role as a lead independent director. Former Independent director Forsee succeeds Dick Swift, a lead independent director since January 2010, and is retiring after 26 years Forsee succeeds Dick Swift, retired chairman, president, and CEO for Foster Wheeler Ltd. and former chairman of the Financial Accounting Standards Advisory Council. Swift has served as a lead independent director since January 2010 and is retiring after 26 years of dedicated service on the company’s Board of Directors. Swift has served on the Board’s Audit Committee since first joining the Board in 1995, chairing the committee from 1996 – 2015. In addition to his role as lead director, he has most recently served on the Audit Committee, the Finance Committee, the Technology and Innovation Committee, and the Executive Committee. Swift also has served on the boards of CVS Health Corporation and Public Service Enterprise Group, and in 2018 was honored as an Outstanding Director by Financial Times-ODX. Growth And Operational Strategies “Dick has been a tremendous asset to our Board of Directors and to me, personally,” said Lamach. “He has provided sound counsel to our Board and to company leadership. His leadership of an organization that was instrumental in some of the world’s most significant engineering projects enabled him to contribute to our business growth and operational strategies in a distinct and meaningful way.” “On behalf of our Board of Directors, I want to sincerely thank Dick for his expertise, guidance, and substantial contributions over time to our company’s differentiated and long-term value to stakeholders.”
After extensive research, testing, and evaluation, Johnson Controls, the provider of smart, healthy, and sustainable buildings, has selected R-454B, a lower global warming potential (GWP) refrigerant, to replace R-410A in its ducted residential and commercial unitary products as well as air-cooled scroll chillers. Systems using the new refrigerant will be available for Johnson Controls, YORK®, Luxaire®, Coleman®, Champion®, TempMaster®, Fraser-Johnston®, Guardian®, Evcon™, and Quantech® branded products in North America, as well as specific international markets where codes are in alignment. High-GWP refrigerants This decision was made as the HVAC industry is preparing to phase out high-GWP refrigerants, such as R-410A, which are now being formally addressed by the Environmental Protection Agency (EPA) through the recently passed American Innovation and Manufacturing (AIM) Act. The AIM Act directs the EPA to phase down U.S. hydrofluorocarbon (HFC) production and use by approximately 85 percent over the next 15 years. Johnson Controls has determined R-454B be the best-in-class replacement refrigerant After evaluating several low-GWP alternatives on a variety of performance and market metrics, such as safety, capacity, efficiency, reliability, availability, and longevity, Johnson Controls has determined R-454B to be the best-in-class replacement refrigerant – a decision echoed by other HVAC manufacturers. R-454B has the lowest EPA SNAP approved GWP for unitary applications of all ASHRAE classified A2L (low-toxicity, mild flammability) refrigerants on the market, coming in at 466. Maximizing environmental benefits This is one-fifth the GWP of R-410A, far lower than the pending 750 GWP limits being proposed and offering the longest-term viability. “Utilizing R-454B was a clear decision, but one that took years of in-depth research, testing, and evaluation,” said Chris Forth, Executive Director of regulatory, codes, and environmental affairs, Ducted Systems, Johnson Controls. “This decision maximizes environmental benefits, which will help to avoid, if not completely avert, a second, near-term transition for the unitary sector. As the AIM Act phase-down schedule progresses, higher-GWP fluids such as R-32, while viable today, have the potential to be eliminated as an option due to their high-GWP values. Johnson Controls will continue to evaluate lower-GWP alternatives for future possibilities.” Improving system efficiency Existing R-410A equipment built prior to that date can be sold and installed indefinitely" In addition to reducing environmental impact, R-454B is more compatible with existing R-410A equipment designs, requires a less or similar refrigerant charge, and can reduce the energy use of HVAC systems and improve system efficiency. The similar operating characteristics with R-410A will make for a smoother transition for distributors, wholesalers, and contractors. “It’s important to note that these pending mandates from the EPA and the California Air Resources Board (CARB) would only apply to the sale of new residential and commercial unitary equipment as well as air-cooled scroll chillers. As the pending regulations stipulate a specific manufacturing cutoff date of January 1, 2025, for residential and light commercial unitary products and January 1, 2024, for air-cooled scroll chillers, existing R-410A equipment built prior to that date can be sold and installed indefinitely,” said Forth. Rule-Making processes “EPA and CARB are scheduled to begin their formal rule-making processes this year, which will determine how long of a servicing period will be granted for R-410A equipment currently in service.” As we approach the refrigerant transition cutoff dates, safety standards and building codes must be updated prior to a widespread market introduction of mildly flammable, low-toxicity A2L refrigerants such as R-454B. Extensive, multi-year research and testing have been conducted by ASHRAE, AHRTI, and others to ensure A2Ls can be safely deployed. Proper training will be critical to ensure the safe use, transportation, and storage of A2L refrigerants. Johnson Controls is committed to ensuring the safe transition to R-454B by providing in-depth training for its contractors and technicians prior to the pending refrigerant transition dates.
Apreco continue to lead the way in the fire suppression market with annual testing of their pressure relief vents. The safety of building structures is of paramount importance to Apreco. Subsequently, their pressure relief vents undergo rigorous fire testing to the EWCL5 certification. Apreco were the first manufacturer to obtain the EWCL5 for their pressure relief vents following numerous meetings and discussions with WarringtonFire. Pressure relief vents With no harmonized code available for fire testing of pressure relief vents available at the time, Apreco created a test protocol in conjunction with the EWCL5. As a result, the performance of these vents could now be evaluated as if in real-world scenarios. The EWCL5 is a thorough and comprehensive audit of both Quality Management (QMS) and Factory Production Control (FPC). This is carried out by WarringtonFire prior to sampling and testing of the pressure relief vents. Annual inspections are then carried out to ensure that product integrity is continuously maintained. Successfully tested construction To obtain the EWCL5, manufacturers must produce products to a successfully tested construction This scheme arms building owners and specifiers with the confidence that the products supplied are of the same specification as those which have been successfully tested. As part of the continued registration, the vents are retested every 5 years. To obtain the EWCL5, manufacturers must produce products to a successfully tested construction, with a regular audit of the production process. The records of these products are then kept, enabling full traceability. WarringtonFire witness the production of these products at Apreco’s factory in the West Midlands, before labeling the product for testing. This ensures that the assembled product is the one tested. Fire integrity tests This gives specifiers a performance that has been verified by experts in fire safety – something that Apreco report is lacking in the industry. Certification for pressure relief vents has now become a global requirement, however, Apreco believes there is still a very difficult situation in some countries where manufacturers are supplying products that had not been tested. Upon retaining their EWCL5 certification, Mike Hodges, Managing Director, says “This shows the continued hard work of the team at Apreco. This year not only did we undertake our QMS inspection, but this was also the year for product retesting, with revised and updated versions of both the IGV® and SGV® vents successfully completing the fire integrity tests.”
Hitachi has announced the release of its new line of mini-split systems that employ the latest technologies, in order to maximize comfort and ensure healthy indoor air. Key features of the new mini-split systems include: An intelligent human sensor system monitors and responds to the environment, to provide continuous comfort. Temperature and humidity levels are controlled, when set to dehumidification mode. Innovative FrostWash technology ensures indoor air is fresh and clean, by eliminating dust, bacteria, and mold. User-friendly airCloud Home app puts control in the palm of the homeowner’s hand and is fully compatible with Amazon Alexa and Google Assistant, enabling voice control when hands are full. Vector DC Inverter Technology Hitachi mini splits feature Vector DC inverters, in order to achieve high performance energy efficiency Hitachi mini splits feature Vector DC inverters, in order to achieve high performance energy efficiency. These inverters cool with maximum capacity at startup, then automatically slow down and operate at minimum capacity, to maintain room temperature at a comfortable level. This reduces energy consumption by up to 62%, when compared to non-inverter levels. A special microchip that is preloaded with the compressor’s data will constantly monitor its operation, while running. This helps the unit to adjust the amount of energy needed, by sending accurate instructions to the compressor, in order to achieve the optimal rotation speed and avoid unnecessary power waste. Easy installation with cooling-only lock function Hitachi mini splits are flexible, easy to install, and offer a wide range of sizes, to make it easy to specify the perfect solution for any project. A cooling-only lock function prohibits heat, when used in ambient cooling applications. Single-zone systems are available in 115V or 208/230V with capacities ranging from .75 to 3 tons. Multi-zone systems can accommodate up to 5 zones with 208/230V and capacities ranging from 1.5 to 3.5 tons.
Two variations of Shower Heat Recovery Unit (SHRU) have been unveiled, as the Baxi Assure range expands to provide even more energy efficient heating and hot water accessory choice for new build housing professionals. Developed as part of a wider portfolio of Baxi Heating’s Assure products and services that are intended to support developers at every project stage, the Baxi Assure SHRU range can offer up to 66.6% heat recovery and up to 8% SAP benefits. Baxi Assure SHRU units Baxi Assure SHRU units are designed to recover heat from waste bath or shower water via the in-built heat exchanger These fit and forget Baxi Assure SHRU units are designed to recover heat from waste bath or shower water via the in-built heat exchanger, which is then transferred to the mains cold water feed to the boiler. This places less energy load on the boiler to raise the temperature to the desired level of comfort. Providing the maximum efficiencies, the Baxi Assure SHRU vertical unit is available with a twin inlet, enabling it to recycle heat from two waste water pipes within the same property. Energy efficient heating and hot water products Nick Wilson, the Commercial & Marketing Director at Baxi Heating, stated, “Our range of energy efficient heating and hot water products and accessories is key to our complete home service proposition, and we are proud to offer the SHRU as part of this.” Nick Wilson adds, “With an impressive energy uplift, new build developers can trust the SHRU to deliver on SAP performance and also take advantage of Baxi Assure’s end to end project solutions, including advice from qualified Baxi Assure SAP assessors to help boost efficiency and a Baxi Design service for accurate sizing and specification.” Project Hub Projects benefit further from support at every stage from a dedicated team of specification managers, bespoke product training, and a Project Hub to manage project product registrations, in addition to technical support and advice from installation to legislation.
With ongoing efforts from governments across the globe to reduce carbon emissions and with an ever greater focus on sustainability, it is vital that the HVAC sector does its part in becoming more environmentally conscious. And, while there have been steps to become more sustainable, there is a huge amount that still needs to be done to make sure that many of the targets that have been set are attainable. In buildings, both large and small, industrial heating accounts for roughly two thirds of industrial energy demand and around a fifth of global energy consumption. Figures like this show the need to have efficient and environmentally-friendly HVAC equipment in place to make the crucial steps towards reducing the contributions these systems make to our carbon footprint. High energy consumption in construction sector A 2019 report by The International Environment Agency (IEA) showed that the buildings and construction sectors combined were responsible for over 30% of global energy consumption and nearly 40% of carbon emissions. This is indicative of the steps the sector needs to take to play its role in a more eco-friendly society, some of which are already underway. However, much more needs to be done if the UK is to reach its goal of reaching net zero carbon emissions by 2050. As we envisage what a post-COVID world might look like, businesses and governments are continuing to put sustainability and lower carbon emissions at the forefront of their planning and the HVAC sector is certainly no exception. But with change in the sector a daunting prospect, decision-makers often don’t know where to start. Smart Technology use in HVAC systems Smart HVAC uses sensors that integrate with a building’s automation system With the constant growth and greater deployment of smart technologies within the HVAC sector, this is certainly a way that systems can become more efficient. Smart HVAC uses sensors that integrate with a building’s automation system. These sensors then collect information about conditions throughout the building. Heat waves are now a far more common occurrence in the United Kingdom. The Met Office estimates they are up to 30 times more likely and will be a bi-annual occurrence by 2050. It is important that any uptake in HVAC usage doesn’t lead to a drastic increase in emission generation. This is one of the areas where smart systems will become crucial. Many scientists have been unequivocal in their sentiment that heat waves are a cause of greater emissions and expect temperature records in the UK and Europe to be broken more regularly, so sites will need to be equipped to handle these conditions. Regulating temperature with hand-held devices With wireless systems now much more commonplace, temperatures can be controlled easily from hand-held devices. With these new technologies, those managing the systems can also benefit from remote monitoring and maintenance, reducing the need to travel to the site for yet another environmental incentive. To accompany the smart systems, equipment including smart thermostats can be installed to maximize HVAC efficiency. Other smart systems available to businesses include smart furnaces and air conditioning units that are far easier to operate than their traditional counterparts. Reducing unnecessary ventilation While global temperatures continue to rise, air conditioning usage has increased and has contributed to greater levels of energy usage. A huge amount of needless emissions are generated by unnecessary ventilation, contributing heavily to heat loss and overall energy wastage. Recirculation of air is a traditionally lower energy cost method of retaining heat and keeping emissions low, however, we must be mindful of the risks associated with recirculating air. The risk of circulating diseases is negated somewhat with heat recovery ventilation, which both removes the risk of disease spreading and improves energy consumption. Efficiency performance of new AC units Air conditioning units in particular contribute significantly to a building’s energy consumption Air conditioning units in particular contribute significantly to a building’s energy consumption, equating to 10% of the UK’s electricity consumption and as such it is important that we bear in mind ways to counteract the emissions this creates. Global energy demand for air conditioning units is expected to triple by 2050, as temperatures continue to rise year on year. The efficiency performance of new air conditioning units will be the key, when it comes to ensuring that escalating demand does not equate to greater emissions. Another issue for suppliers and manufacturers to address is differing rates of consumption for AC units in different countries, with units sold in Japan and the EU typically more efficient than those found in China and the US. Modularization Modular HVACs have also become increasingly popular in recent years. Modular HVACs are responsible for heating, cooling and distributing air through an entire building, with their increase in popularity largely down to their greater levels of energy efficiency, cost effectiveness, flexibility and substantial ease of installation and maintenance. Modular HVACs can be tailored specifically for workspaces and they often allow work to be done on the systems without disturbing the workforce, achieved primarily through rooftop placement. Commercial workspaces are larger and often require differing needs to residential properties and can cater to a wide range of the specific requirements of work and commercial spaces. As we strive for lower carbon emissions, it seems that this trend will continue and will become a key area in reducing emissions that HVACs have traditionally generated. System maintenance and training To meet government and industry requirements, many new buildings will require HVAC systems that can be maintained simply in order to perform in a more energy efficient way. Many companies are looking at ways to become climate neutral and significantly reduce their footprint Many companies are looking at ways to become climate neutral and significantly reduce their footprint. Companies are following the likes of German-based company, Wilo Group, who have announced they are committing to sustainable manufacturing by developing a new carbon neutral plant and HQ in the next few years. Lowering carbon footprint As we continue to move towards an ever more environmentally conscious society, it will be of paramount importance for companies, governments and the public to think about ways in which we can lower carbon emissions. Smart technologies will certainly be at the forefront of this, negating many needless journeys and making it easier for industries to adjust settings and tackle issues remotely. Greater levels of training will help equip us with the tools to make sure we are best placed to reduce emissions and be more sustainable as a result. While the steps outlined above do show some progress and measures we can take, there is far more that we can do as a sector to significantly reduce HVAC’s carbon footprint and once we have moved beyond the impact of the COVID-19 pandemic, this will surely be at the front of industry leader minds.
The education field was faced with multiple challenges this past year. Not only did the COVID-19 pandemic bring the necessity of online learning, but it has also brought up necessary changes to physical schools and universities, when reopening time arrives. The health and safety of students, staff, and faculty has become a priority for directors of school operations, who have been working to properly adapt school facilities to this new reality we are facing. Ensuring health and safety of students Besides safety measures like the addition of hand sanitizers, reinforcing the use of masks and social distancing, these professionals were faced with an even bigger and more important issue: ventilation and airflow indoors. School facilities have many unique features that increase the concerns regarding indoor air quality. Occupants are usually very close together, considering that school buildings have four times as many occupants as office buildings for the same amount of floor space (EPA). Variety of pollutant sources According to the WHO, the virus can also spread in poorly ventilated and/or crowded indoor settings Other issues include tight budgets, the presence of a variety of pollutant sources (including specialty classrooms, like art, gyms, and labs), concentrated diesel exhaust exposure due to school buses in the property, and a large amount of heating and ventilation systems that may cause an added strain on maintenance staff. On top of that, schools usually have to worry about child safety issues, concerned parents, and wellbeing of faculty and staff. According to the World Health Organization (WHO), the virus can also spread in poorly ventilated and/or crowded indoor settings, where people tend to spend longer periods of time and aerosols particles tend to be suspended in the air, which leads to the importance of indoor air quality in classrooms. Importance of natural ventilation and HVAC systems Natural ventilation and HVAC systems are the basic methods to bring clean air indoors, however, schools that rely only on these methods of ventilation need to be aware of their potential limitations. HVAC systems, for example, should have regular maintenance checks and filter changes, in cases where the system is less sophisticated, schools need to add new forms of air purification to effectively mitigate airborne pathogens. Studies showing quality of air in US schools Studies have shown that low-standards HVAC ventilation systems may contribute to airborne diseases transmission due to low air exchanges rates, poor maintenance and lack of high-efficiency filters. For this reason, portable air cleaners are becoming more and more popular to create a healthy learning environment. EnviroKlenz, an indoor air quality company, conducted real-life setting studies to show the quality of the air in schools in different areas of the United States. The study measured the amount of particulate matter in classrooms, with and without the use of additional portable filtration systems, which allowed for comparison and analysis of the benefits a portable air cleaner can provide. National EPA standards for indoor particulate matter The study also compared the current data to the national EPA standards for indoor particulate matter (PM), in order to evaluate the performance of the EnviroKlenz Air System Plus. The IAQ meters focused on PM1, which is about 1 micrometer in size (70 times smaller than the diameter of human hair!). The systems ran in operational educational environments, with daily schedules being carried out as usual and results can be seen below. School directors of operations also must pay attention to the different technologies available in portable air cleaners. With the growth of the industry, new emerging technologies have come up, and there’s still lack of third-party testing to prove their efficacy. Other technologies, like carbon filters, do not work against airborne pathogens and may release harmful byproducts back into the environment. EnviroKlenz Air System Plus EnviroKlenz Air System Plus, which utilizes a patented earth mineral technology to capture pathogens, is at 99.9% efficiency The EnviroKlenz Air System Plus, which utilizes a patented earth mineral technology to capture virus, bacteria and other harmful pathogens, is at 99.9% efficiency and is complemented by a medical-grade HEPA filter and UV-C lights, was also tested against a carbon-based air cleaner in a classroom. As shown below, the carbon system struggled to keep consistency, with peaks and valleys throughout the day. Meanwhile, when the EnviroKlenz Air System Plus was turned on, the PM1 levels were steadily low for over 4 consecutive days. Deploying portable air cleaners in classrooms Adding a portable air cleaner to classrooms and common areas will increase air exchange rate and mitigation efforts, but the long-term benefits go beyond the pandemic. Studies have shown that good indoor air and ventilation rates are directly linked with students’ academic achievements and can increase performance. High CO2 levels in a school environment are also associated with lower average annual attendance and worse individual test performance. Other long-term benefits include reducing symptoms of those who suffer from respiratory diseases and creating a favorable environment not only for students, but also for teachers and staff; while bringing a sense of comfort and well-being to parents and the community. Combined benefits of air filtration, ventilation, and purification “When we’re operating more normally, maybe we’ll be able to cut down on some of the traditional flu-peaks that schools have, or cold peaks, that kids just bring into school, by managing the airborne virus and bacteria quality,” said Peter Twadell, Head of School at Birches School in the US, and an EnviroKlenz Customer. School officials need to consider the combined benefits offered by filtration, ventilation, and purification methods to create the healthiest environment possible. Thinking in a pandemic-conscious mindset, air quality has gained the recognition it deserves in creating a proper and healthy learning environment.
Do HVAC systems help with the spread of COVID-19? No one is entirely sure, but it seems very likely. Especially in the case of enclosed indoor spaces. As soon as the COVID-19 pandemic began, fingers pointed to air-conditioning systems as culprits, and scientists now believe a super-spreader event traced back to a restaurant in Guangzhou, in China, which could have started with an asymptomatic person who just happened to cough close to an HVAC fan. Scientists also believe something similar happened on the Diamond Princess cruise ship, which made headlines over the world, in February 2020. Especially because cruise ships have elaborate inter-connected HVAC systems, which could have aided the coronavirus as it ripped through the cruise population. HVAC systems Role in COVID-19 spread And because air-conditioning units typically function indoors, and because the coronavirus (COVID-19 virus) can float about for a little while on respiratory droplets in the air, it should be no surprise at all that HVAC units have come under scrutiny. In response to this, over the last year, the REHVA (European Federation of Heating and Ventilation Engineers) group actually set out guidelines on what to do, in order to make HVAC units safer. Actually, they went further than that, because on the contrary, properly configured air-conditioning units can actually help to fight the coronavirus, rather than aid its spread. How AC units can limit viral transmission By making sure there is a fast and constant exchange of air, AC units can actually wash away virus particles Despite the apparent doom that HVAC units can kick start super-spreader events, the answer is not to do away with air-conditioning systems. In fact, REHVA recommends the opposite. Instead, what we actually need to do is to reconfigure our AC units so that they can stop coronavirus particles from loitering about in the air, and then settling down. When virus particles ‘settle’ on a surface, they can be infectious for a time. The technical term for this is a ‘fomite’ and an area that is infectious to touch. By adjusting the settings on AC units to increase the amount of outside air they pull in, and the rate to which this fresh air is distributed indoors, we can make indoor environments much safer. By making sure there is a fast and constant exchange of air, AC units can actually wash away virus particles and prevent fomites from occurring. What about just opening the windows? Before modern HVAC units, there was, of course, the humble open window. And sure, open windows is a great way to make sure that air from the inside is quickly and constantly being exchanged with the air from outside. But as we all know, opening the windows is seldom the ideal choice. For example, it isn’t desirable in cold or in air-polluted or noise-polluted spaces. Open windows can even be a hazard if there is a risk of injury or falling. If you can work in an environment with open windows in a way that’s feasible and manageable, that’s great. They will likely offer similar protection against lingering coronavirus particles. But even if you can, the evidence suggests that a properly configured HVAC system is still safer (not to mention more comfortable, given their ability to regulate temperature) than the age-old open window option. AC units with high-efficiency particulate air filters Arguably the most proficient AC units today are those equipped with high-efficiency particulate air (or HEPA) filters. Although, you will struggle to find any outside of surgical theatres and airplanes, where getting the right amount of air exchange is primarily a health and safety issue and not just an issue of comfort. But as the pandemic has revealed to us, having better optimized HVAC units in public indoor spaces is a health and safety issue. With that being said, could HEPA filters become the norm throughout major public indoor spaces? HEPA filters HEPA filters are so reliable because they are made up of thousands of layers that trap all types of particles HEPA filters are so reliable because they are made up of thousands of layers that trap all types of particles, from dust to viruses. And they operate with an astonishing speed, being able to completely turn over a room’s air up to 30 times per hour. It would almost certainly make sense for HEPA filters to at least be considered for widespread use, but there are some technical issues to work out before their deployment becomes feasible. Cost aside, these filters can cause ‘dragging’ when attached to traditional AC units, among other issues. But if we are serious about tackling all forms of viruses, including influenza which hospitalizes and kills thousands every year, perhaps the widespread deployment of HEPA filters should be at least thought about in our approach to the ‘new normal’. Protecting people with proper air conditioning Whatever the fate of the HEPA filters, we do not have to sit around and wait for a revolution in the HVAC units to keep the general public safe. We can do that right now by equipping and configuring our current systems to properly exchange the rate of air in indoor spaces — to blow away lingering particles and keep surfaces free from fomites. Fortunately for us, the COVID-19 virus finds it hard to spread outdoors. But that means almost all of the spreading must happen indoors. So, it is crucial that we do all we can from an HVAC perspective to limit the spread of the coronavirus, and indeed all the other infections (including flu), which collectively can infect and hospitalize thousands of people every year. New infectious diseases emerge, and old ones come and go all the time. With the guidelines that REHVA has put together and some vigilance, our actions could indirectly save many people from falling ill every year. In summary, it’s not rocket science. To make an indoor area safer from the coronavirus, turn your AC unit up. Blow away the germs and stop them from settling down with a frequent exchange of air at all times.
What do customers want from their HVAC company? It’s a challenging question, and the answers reveal a path to a more successful and customer-centric company. There are numerous articles written that offer consumers advice on choosing an HVAC company. In the simplest terms, wouldn’t it be possible to ‘reverse engineer’ that advice to provide a roadmap to guide HVAC companies in how to succeed? Addressing consumer concerns Often, consumers’ concerns surround whether a company is a reputable and/or a well-managed business. Answering questions about basic requirements, such as insurance should be easy. Another element of consumer-oriented advice on choosing an HVAC company is to find one that is qualified to do the job. For example, able to work on the specific type of equipment a consumer has, whether central air conditioning, humidifiers, heating sources, or whatever. From the perspective of the HVAC contractor, this advice points to a need for constant training and updating of skills related to various equipment types. Seeking HVAC specialists Customers may be looking for specialty service, specific to a certain type of equipment or type of installation Consumers are also advised to seek out specialists in the work they need doing, whether a repair, a new installation or related to a specific type of equipment. Contractors must both understand their own strengths and weaknesses and be able to communicate them clearly to put customers at ease. Consumers will also be looking for contractors, who are experienced in repairing the brand or type of system they have. Customers may be looking for specialty service, specific to a certain type of equipment or type of installation. Contractors should constantly evaluate their skills-sets, their strengths and weaknesses, and provide full transparency to enable customers to make the most informed decisions. Better to walk away from a job than to overextend or misrepresent a contractor’s skillset. Such overreach never ends well and can damage a contractor’s broader reputation. HVAC contractors come in all sizes Customers will also be looking to evaluate the size and stability of the HVAC company that they work with. HVAC contractors come in all sizes, of course, and the size of a company does not necessarily reflect on the quality of work. However, stability and a good reputation are essential, especially for a smaller company or one-man shop. Consumers are often advised to ask for references, especially if dealing with a smaller contractor. HVAC businesses can be proactive in this regard by keeping references handy and even collecting customer testimonials to share with prospective customers. Positive reviews a key indicator Online reviews, hopefully all positive, are another element that can help to put prospective customers’ minds at ease. Ideally, if an HVAC contractor is doing a good job, positive reviews, testimonials and references will happen organically. Consumers are often advised to ask for certifications to document an installer’s skillset, so keeping up with the related paperwork will ensure that a customer is comfortable with any contractor’s skill level. Specific HVAC contractor license requirements Specific contractor license requirements vary by state and even at the local level Specific contractor license requirements vary by state and even at the local level. Required license numbers should be displayed on websites and promotional materials, and most states have an online directory listing of licensed contractors. Be attentive to other requirements, too, such as the special EPA certifications required to use refrigerant. Consumers expect their HVAC contractors to guide their buying decision, whether determining the correct size HVAC unit to serve a specific home size, analyzing flow rates, or recommending systems to meet specific needs. Striking a balance between simplicity and technical detail Delivering on these expectations requires a delicate balance between simplicity and technical detail. The customer needs to be comfortable that the installer knows his stuff but does not want to be overwhelmed by arcane technical discussions or puzzling acronyms. Best by far is to keep it simple (and be willing to provide additional detail – described in layman’s terms – if the customer has questions). Membership in local trade associations can provide additional credibility to a contractor, and provide additional sales and networking opportunities, too. Importance of warranties Warranties are another critical issue for consumers. Everyone offers manufacturers’ warranties, but there is an opportunity for HVAC contractors to offer even more, whether an extended warranty, inclusion of labor, as well as parts, work guarantee on repairs, and/or an extended maintenance contract. Availability 24/7 could enable a contractor to take work away from a competitor Customers should be warned that maintenance or repairs performed by an unqualified company may void the manufacturer warranty. Availability in an emergency or on short notice is another way HVAC companies can differentiate themselves among consumers. Availability 24/7 could enable a contractor to take work away from a competitor who is closed for the weekend. Emphasizing on customer services Customer service also requires a personal touch, so an ability to communicate well with potential customers can generate extra business. Emphasize listening skills and make sure customers know they are being heard. In all dealings with customers, be straightforward and honest in order to build long-term trust. To grow a successful HVAC business, prepare proactively to answer the questions customers are most likely to ask.
Excessive heat is a byproduct of data center servers and one that presents both economic and environmental challenges. Data centers are one of the world's fastest-growing contributors of CO2 emissions, for example, currently generating well over 100 million tonnes of CO2 globally per annum. This roughly equates to half of the global aviation emissions, 30 million cars or 36 coal-fired power plants. Currently, data centers waste over 200TWhrs of energy annually, on a global scale. Sustainable electronic cooling solutions Nexalus is an Irish company that provides innovative and sustainable electronic cooling solutions for data centers. Combining applied thermodynamics with thermal-fluid science and engineering, Nexalus’s hot-water cooling systems integrate with electronics that produce excessive heat, to cool, capture and reuse this thermal energy, while also increasing efficiency and reducing costs. Founded in Cork, Ireland, with international strategic development and manufacturing partners, Nexalus provides sustainable electronic cooling solutions, with patented technology that prioritizes not only performance and profit but also the planet, according to the company. Using sealed server technology Nexalus simultaneously solves data center heat and energy problems by integrating liquid cooling directly into its “sealed server” technology. When one seals the server and then deals with the heat and energy management problems right at the source (i.e., in the individual server), then the larger energy problem becomes modular, scalable, and also becomes more to do with energy transport, which is comparatively straightforward. A key goal at Nexalus is to enable industries to reach and exceed both their economic and environmental targets simultaneously turning heavy electrical energy users into organizations that are generating clean energy. Their domestic market of Ireland alone is Europe’s largest data center market, with 66 active data centers and 29 currently in development. The capital, Dublin, is home to four of the leading five hyperscalers. Heat and energy management The key to that success is the use of our patented jet impingement and sealed server technology" “With our foundations firmly rooted in both science and engineering, we set out to explore the thermal issues affecting the market, namely ‘heat problems’ and ‘energy problems,’ and to utilize the untapped ‘greener’ potential of this ever-growing industry,” says Anthony Robinson, Co-Founder and Chief Science Officer at Nexalus. “Our ability to recover, and also to convert this otherwise wasted heat into a clean energy asset, creates the perfect circular economy,” says Robinson. “Key to that success is the use of our patented jet impingement and sealed server technology.” He explains: “Traditional cooling companies use air; however, this medium has reached its limitations. To close the circular economy, the currently wasted thermal energy from data centers needs to be redeployed. This cannot be achieved using air due to the poor thermal physical properties of this fluid.” To close the circular economy, the currently wasted thermal energy from data centers needs to be redeployed Recovering heat into a liquid stream Water has superior thermal properties enabling up to twice the thermal design power of a CPU and the transport of x4, 000 the thermal energy per unit volume as compared with air. In Nexalus’s Combined Heat & Compute (CHC) data center server technology, each server is thermally isolated from its surroundings, and heat is recovered from the high-powered processors via jet impingement Enflux/Vortex (CPU/GPU) water-cooled direct contact heat exchangers. All of the lower-powered supporting electronic components (RAM, VRM, power supplies, storage, etc.) are air-cooled with a heat exchanger, the NXQ, which itself is a heat recovery device. All of the heat generated within the sealed server is recovered into a liquid stream, which is easily transported for use elsewhere. Facilitates economies of scale The solution works for a single rack in a hotel or a mobile cryptocurrency container or a hyperscale data center “The importance of modularity cannot be stressed enough,” says Robinson. In the data center environment, being pluggable and hot-swappable allows not only for ease of installation and maintenance but facilitates economies of scale. The solution works for a single rack in a hotel or a mobile cryptocurrency container or a hyperscale data center. This itself then creates an equally scalable and broad energy market, where the heat, being at temperatures ideal for comfort, space, and process heating, can be deployed into residential, industrial, and food production sectors, and this mitigates the use of fossil fuels and accompanied generation of greenhouse gas emissions. Solving heat-energy problems “The problems we are trying to solve bridge between what can be considered on one side ‘Heat’ problems, and the other side ‘Energy’ problems,” says Robinson. Heat problems are endemic for two reasons. Firstly, because chip manufacturers are packing more functionality and power into increasingly smaller devices; this concentrates the heat to such an extent that old-school cooling techniques just don’t work. And secondly, because electronic packages, such as servers and home desktops, are continuously becoming more compact, more highly integrated, and themselves more powerful; old-school cooling technology just doesn’t fit anymore. A bridge between heat and energy Energy problems rear their head when you have hundreds, to tens of thousands of electronic components operating in one place. Integrating power-hungry computing into electric vehicles, for example, is an energy problem. Data centers that work at the scale of MegaWatts are an energy problem. Now, when trying to come to grips with the size of this energy problem, imagine hundreds, to tens of thousands of individual heat problems adding up, says Robinson. Nexalus is innovating in a space where heat and energy problems are not considered separate. “As scientists, we are quite comfortable working on the tough thermal-fluid science problems, right down to the microscale of the chips,” says Robinson. “As engineers, we are equally comfortable working on the tough data center energy problems. Having the capacity to develop technologies that exist at both ends, as well as bridging between them, is where Nexalus innovation happens.” Thermal science The solution merges thermal science with a closed-loop hot-water cooling system Some people hear liquid cooling and immediately think of immersion. Nexalus is not immersion cooling – they have removed the need to submerge a server in liquid. Their elegant solution is born from an understanding of thermal science with a closed-loop hot-water cooling system, using patented jet impingement and sealed server technology. Heat and energy recovery While some air and immersion cooling companies are beginning to explore heat recovery and reuse, another big misconception is the success to date in this space - creating a hot water asset ready for immediate use. Currently, Nexalus says they are the only company to provide 80% heat recovery to data centers and ability to lift the thermal energy at a water temperature suitable for reuse – between 40°C to 60°C – which means that the historically wasted CPU thermal output can be redeployed for immediate use to residential, industrial and food production sectors. While other cooling companies are starting to explore energy recovery, Nexalus is first to market with heat recovery and reuse solution that is practical, adaptable to various environments, and can be implemented easily at scale, without the requirement for complicated additional infrastructure or additional electricity to raise water temperatures for reuse, according to the company. Benefits on ROI There are several elements of an improved return on investment (ROI): Less capital expenditure: Nexalus solutions are less expensive than traditional solutions, and the server lifecycle is longer. Reduced operational costs: The solution uses about 30% less electricity than traditional data centers, and operational maintenance costs drop. Brand new revenue stream: A new income stream from the backend is the sale of hot water. In addition to Data Centers, Nexalus also operates in High Performing Computing (HPC), Bitcoin, Gaming, and Automotive.
Incorporating cool and dry outdoor air into commercial HVAC systems can save money and energy, while causing less wear-and-tear on cooling systems. An economizer is a device that works alongside rooftop HVAC systems to augment the system with outdoor air, in order to provide what has become known as ‘free cooling’. Economizers Economizers introduce low-temperature or low-enthalpy outdoor air into a building to reduce or eliminate mechanical cooling, depending on outdoor air conditions. [Enthalpy is a thermodynamic quantity equivalent to the total heat content of a system.] An economizer evaluates the temperature (and sometimes humidity) levels of outdoor air. A combination of logic controllers and sensors both assess the right level of outside air to bring in and operate internal dampers to control how much air is pulled in, re-circulated, and exhausted from a building. Rather than relying solely on a building’s cooling system, the system leverages cool outside air to accomplish the same task. Free Cooling When outside air is cooler than re-circulated air, using more outside air is more energy efficient When outside air is cooler than re-circulated air, using more outside air is more energy efficient. When outside air is sufficiently cool and dry, no additional air conditioning is needed, hence the term ‘free cooling’. By minimizing the operation of an A/C unit, economizers can prolong the life of a system, reduce costs, and minimize maintenance with fewer breakdowns. Enhanced ventilation Extra ventilation is another benefit of economizers, which is important in the era of COVID-19. An economizer can improve overall air quality by bringing in the fresh air and exhausting the building’s stale air. Even in older buildings that were not designed with ventilation in mind, economizers can improve air quality. Fresh air can keep employees healthier and minimize an employer’s cost of sick days because of air pollutants. There are three types of economizers: Dry bulb, which evaluates the difference between the temperatures of indoor and outdoor air, but does not consider humidity. Web bulb or Single Enthalpy, which evaluate both air temperature and humidity. They are the most popular option. Differential Enthalpy, which uses multiple sensors to measure temperature and humidity of return air, as well as the outside air, a popular option for more complex scenarios. Minimizing total building energy consumption Energy costs are a big advantage of economizers, helping to minimize total building energy consumption, 45% of which is accounted for by the HVAC system. The use of an economizer provides up to 45% greater efficiency in cooling loads than existing HVAC operations, according to researchers. Climate conditions are a significant factor affecting the energy-saving impact of air economizers. Researchers evaluated the energy-saving potential of economizer systems in six climate zones, concluding that energy savings in hot-humid summer climate zones were 10% higher compared to cool-dry summer zones. Good controls, valves, and dampers are needed to ensure optimal operation of economizers, and maintenance is also critical.
Working alongside Sunflag Iron and Steel Company Ltd. in Bhandara, India, global technology company ABB has achieved successful integration of its ABB Ability™ Data Analytics Platform for metals, tying together all manufacturing and operational data of steel melt shop and rolling mills to improve production planning and plant performance optimization. The plant, which has a capacity to produce 500,000 metric tons of high-quality special steel per annum, now has the platform to integrate data sources across 17 operational areas, including non-ABB systems. A key example is that information technology (IT) and operational technology (OT) has converged to positively impact Sunflag’s steel melt shop (SMS) and rolling mills. ABB Ability™ Data Analytics Platform ABB integrated with the existing automation systems for process and quality monitoring in real time, aligning with user-friendly operator dashboards available via a web page on mobile. The platform enables identification and diagnosis of issues or use of extra resources. “Together we’re looking forward to realizing the full benefits of enhanced operations and quality,” said Ragunath Satyan, Industry Lead for Metals, ABB India. “ABB Ability™ Data Analytics Platform for metals will provide clear advantages in terms of monitoring and troubleshooting daily process and quality issues.” It is one of the first global implementations of ABB’s integrated plant monitoring system in the metals industry “We have ensured that Sunflag Steel’s people have visualization of real time plant operations on the most modern dashboards. This will allow for better decision making and will ultimately show returns in productivity, quality and resource efficiency.” digital transformation engagement It is one of the first global implementations of ABB’s integrated plant monitoring system in the metals industry, and is part of a long-term vision across process industries for a future where the physical and digital worlds are connected, scalable and harness machine learning potential. The project has been part of a wider digital transformation engagement with the customer, with ABB providing domain expertise for systems that improve overall process visibility to enable data driven business decision making. resource efficiency “We’re proud to have had the opportunity with Sunflag Steel to showcase and implement ABB Ability™ Data Analytics Platform for metals for all manufacturing and operational data of steel melt shop and rolling mills on site,” added Ragunath Satyan. ABB Ability™ solutions combine ABB’s deep domain expertise with connectivity and software innovation to empower real time, data-driven decisions for safer, smarter operations that maximize resource efficiency and contribute to a low-carbon future. A large portfolio of digital solutions helps organizations automate, optimize and future proof their business to achieve new heights of performance and drive sustainable progress.
The mining industry uses a variety of corrosive chemicals in the extraction process of minerals such as gold, silver, platinum and other valuable raw materials. In the extraction of gold, for example, chemicals that are used in the process (ie., sodium hydroxide and sodium cyanide), require to be constantly heated at certain temperatures in large containers (up to 50,000 gallons). Replaceable heating elements These temperatures also require precise controls in order to maintain their consistency and effectiveness. The mining industry has used Wattco immersion heaters to help them solve this problem. With the help of highly resistant alloys used with our tubular elements, seamless tubing as well as a well calculated watt density, Wattco was able to provide replaceable heating elements that would heat up the chemical solutions to efficient levels using digital SCR controllers to help maintain the required temperatures. Skid mounted systems were also used in sister facilities that assisted in transport A redundancy system was also engineered to allow for emergency situations and help protect the valuable product and avoid any downtime in the process. Skid mounted systems were also used in sister facilities that assisted in transport and modularized the heating system in anticipation of additional heating and power requirements. Benefits of Wattco immersion heaters are as follows: Even dangerous and corrosive liquids can use electric heating to assist in the extraction of valuable commodities without the use of flammable heating source such as gas. Safety and virtually maintenance free electric heating can be used in large tanks without the need of access holes from the side of the tank. Precise controls can be used to maintain sensitive temperatures in dangerous areas.
Global technology company ABB has been contracted by manufacturer of forest products, Arauco, to modernize its Licancel Cellulose Plant in Chile to deliver faster response times, greater cyber security, upgraded operator interfaces, enhanced process reliability and flexibility for remote working. Arauco will continue to utilize ABB Ability™ System 800xA distributed control system (DCS) and extend its use as the foundation for all operations at the plant. This will be done in two key stages: updating the existing System 800xA to version 6.1 and migrating from older DCS Infi 90 systems to new process communication and termination units to modernize the communications, network and controllers. Moving to an ABB Ethernet network will allow more flexibility with the control system, enabling remote working and reliability improvements. distributed control system This will support Arauco’s process improvement plans for Licancel, its 154,000 ton capacity plant for unbleached kraft pulp (UKP) cellulose located in the Licantén district of Maule region. Arauco is driving sustainable forest management and use of renewable sources across the country through local research and development into technologies to meet these aims. Following detailed engineering studies, teams from ABB will collaborate with Arauco staff on site to complete the upgrade and system commissioning, resulting in a fully-migrated system and a platform fit for future adaptations and trends. “This modernization marks a departure from technologies that have been in place since the 1990s,” said Jorge Mesa, Licancel Plant Manager, Arauco. “Having the new, improved distributed control system and applications in place will better equip us to facilitate tackling our additional technological development projects, and achieving our best ever process performance at Licancel.” ABB Ability™ System 800xA Compared to the previous infrastructure, there will be fewer control system uncertainties to overcome" “The latest version 6.1 of the ABB Ability™ System 800xA offers the advantage of improved security, performance and interaction,” said Julio Arellano, Service Group Leader of ABB’s Minerals and Pulp & Paper Plant in Chile. “Operators will be able to quickly identify and respond to faults using new tools and protocols on the modern graphical interface units. Compared to the previous infrastructure, there will be fewer control system uncertainties to overcome, allowing Arauco’s people to focus on what they do best.” “This project builds on our existing and longstanding relationship with Arauco across its wood pulp and processing portfolio. The renewed activity with Licancel is testament to the quality and service of the original system, which served the plant for more than two decades. Arauco not only entrusted to us the technology involved, but also the integration process.” ABB is working in more than 50 countries to provide its comprehensive portfolio of integrated digital solutions, automation and electrification systems, industry-focused products and services to help customers optimize all phases of the papermaking process. The company works across packaging, paper, tissue and pulp disciplines to help drive availability, performance, cost and quality improvements.
A large manufacturer of steel cables from Detroit, Michigan contacted Wattco with a problem that the cables they manufactured were corroding in their warehouse and needed a solution to prevent this from happening. Steel products that often sat in inventory for long periods of time were more prone to corrosion. Traditionally, light lubricating oil was used to coat the cables, preventing rust from settling in. The cables were exposed to a steam heating tank, containing light oil at ninety-five degrees Fahrenheit. The problem was that the oil had a lower than average viscosity and tended to disappear after a period of time. Oil immersion heaters Oil that has a higher viscosity can solve this problem. It would coat the cables and offer a longer storage life than before Oil that has a higher viscosity can solve this problem. It would coat the cables and offer a longer storage life than before. The trick was to heat it up to 220F, and make the oil more viscous without sacrificing the quality of the cables. Wattco provided 12 immersion heaters, each with 9KW 480V 3PH that had control panels and a redundancy system that prevented downtime. Thermocouples for heater safety Two thermocouples were used – one for temperature control and the other for high limit shutoff to safeguard the heaters. The heaters were also overrated to provide the customer additional power available. 120,000 LBS of cable was able to be treated with oil reaching 210 degrees temperature. Wattco suggested a high limit setting of 275 degrees to avoid overheating. This was easily programmed in the digital temperature controllers. Once we installed the new system, the process was monitored for 6 months and found no additional signs of corrosion. Benefits include: No maintenance costs on process heaters Safety temperature controller that prevents overheating Cables are fully protected from corrosion Electric industrial heaters are fairly inexpensive and last for years
AET Flexible Space has completed a major upgrade of the underfloor air conditioning system at a historic building located in the Clerkenwell area of London, The Bond Works building at 77-79 Farringdon Road. The building was originally constructed in 1882 as the London premises of Lincolnshire-based engineering firm, Marshall & Sons, and previously underwent a full redevelopment in 2007 by a group of private investors. The eight-story building is located on a prominent corner position, with floor-to-ceiling glazing ensuring that each floor benefits from optimum natural light. The exposed brick and ironwork grants a contemporary warehouse-style finish to the six extensively refurbished floors. Underfloor air conditioning Underfloor air conditioning was specified and installed for the height-restricted building in 2007, along with other energy-saving design features such as nighttime ice storage. As part of the recent works, AET Flexible Space was successful in its bid to upgrade the existing downflow unit controls and replace all fan terminals on the six refurbished floors with AET Fantiles. Integrated controlling systems With underfloor air conditioning systems, fully conditioned air is fed into the plenum by zonal downflow units (CAM), which are then supplied into the workspace via fan terminal units (Fantile). The Fantile units feature integrated controllers where users can personally adjust fan speed and temperature The Fantile units feature integrated controllers where users can personally adjust fan speed and temperature to suit their own comfort. Systems can be configured with underfloor or high-level return and can easily integrate with passive or other ventilation systems. The existing system at Farringdon Road is the equivalent to an AET CAM-V system, supplying conditioned air via the floor plenum and receiving spent, used air back at a high level for re-conditioning. Upgraded the existing units Working for Twenty1 Construction and new building owners, NFU Mutual, AET engineers upgraded the existing units with AET control boards, associated cabling, new actuators, and filters. 140 TU4-AC Fantiles were supplied for the six floors of speculative Cat-A accommodation with the capacity to add additional terminals for tenant fit-out. The final result is a spectacular, contemporary “cutting edge meets heritage” workspace, blending historic features with new modern services in the heart of the Clerkenwell business district.
Very few homeowners ignore the need for keeping temperatures in their homes at comfortable levels. One isn’t going to overlook the need for an effective heater when it is freezing cold outside, right? Of course not. That need is obvious. Not all needs are quite as obvious, though, even if they are equally important. For instance, the need for great indoor air quality in one’s home. Make IAQ services part of on-going HVAC services in Loveland. The problem with indoor air quality is that there are just so many different ways in which it may suffer. Fortunately, the IAQ professionals on the company’s team ensure that, no matter what is wrong with the indoor air quality, one will have the right solutions in place. Humidity Issues The company is sure that some people have little experience with portable humidifier and dehumidifier units Humidity is a tough nut to crack. Too little humidity in the home is certainly not desirable and can have a number of unpleasant consequences. These can include dry, itchy skin, nosebleeds, increased instances of illness, and more. However, too much humidity is not great, either. If the air in the home is too humid, then one may run into musty odors, issues with warping wooden floorboards, wood rot, and even the promotion of mold growth. The company is sure that some people have little experience with portable humidifier and dehumidifier units. However, if one is serious about optimizing humidity in the home, these are not what one should choose. One should want whole-house solutions to humidity problems, and that means that wanting a whole-house humidifier and/or dehumidifier installed in the residence. And that means hiring a professional to do the right job. Airborne Pollutants Perhaps the most common issue that homeowners encounter with their indoor air quality is that of airborne pollutants. Dust, dirt, pet dander, pollen, and other debris can get into the air in the home. Also about breathing all of those pollutants into the lungs. But, what can one do about it, right? It’s not like one is going to ditch Fido just because he sheds. The company suggests that there may be a way to completely eliminate the risk of airborne pollutants making their way into the home. However, one can remove the pollutants from the air that they breathe quite effectively with the right equipment in place. Whole-house air filtration systems, for example, or more advanced air cleaning systems, may be used to clean the air that fills the home. Biological Pollutants It may sound scary and the company is not trying to alarm the people. However, it has to be said. Biological pollutants in the home pose a health threat. With UV germicidal lights, one can destroy biological pollutants like viruses, mold spores, and bacteria that are putting health at risk.
Round table discussion
The practice of working from home soared during the coronavirus (COVID-19) pandemic and many observers see a likely continuation of the trend, as infection risks gradually subside. Both environments – home and office – depend on HVAC systems to keep occupants comfortable (and safe!). Therefore, the industry stands to be impacted whichever way the trend plays out. We asked our Expert Panel Roundtable: How will remote working affect residential and commercial HVAC?
The Internet of Things (IoT) is the network of physical objects embedded with sensors, software and other technologies to facilitate connecting and exchanging data with other devices and systems over the internet. Use of the IoT is expanding among both business and residential applications. However, there are hurdles to overcome, including security, privacy and networking challenges. As more HVAC devices embrace the IoT, we asked our Expert Panel Roundtable: What is the impact of the Internet of Things (IoT) on the HVAC market?
New technologies continue to drive change in the HVAC market. HVAC’s image as a mature and stable industry can overshadow the high level of innovation taking place. Meeting environmental challenges and creating more cost-efficient systems are among the forces fueling the change. We asked our Expert Panel Roundtable: What will be the next big product trend in the HVAC market?