HVAC Plumbing - Editor's Note
AHR Expo was back in a big way for 2022, reflecting a dynamic industry that not only survived the pandemic but has found new ways to thrive. Technical developments on display in Las Vegas spanned traditional product categories, which continued to display new levels of innovation in a mature market. Also reflecting progress were new digital offerings that increase control and efficiency of HVAC products and link them to the expanding world of data. Omar Tabba, the Chief Product Officer at...
A new installation is using natural heat from groundwater to regulate the indoor climate of The Glen Mhor Hotel in Scotland. The groundwater is further heated by two electric heat pumps and distributed to guest rooms and apartments through a small heating district network. From the system, which is slated for completion this spring, the water will return to the sand and gravel layers in shallow ground around Inverness, and eventually back to the River Ness. The design, which replaces 20 gas-fir...
The HVAC market is moving fast. Supply shortages, technology trends and regulatory issues all converged and had a profound impact on the industry in 2021, even as the lingering impact of the COVID-19 pandemic also made a mark. Looking back at the top articles of the year at HVACInformed.com, as measured by those that received the most ‘clicks’ on the website, provides a decent summary of how the industry evolved in 2021. Top 10 articles posted at HVACInformed.com in 2021 Timely and...
Veterans make good job candidates. Military experience comes with a heightened work ethic and sense of responsibility. Many veterans have experience working outdoors and with their hands. They are used to being team members. Coming out of the military, however, veterans may find themselves at a loss for a career path. HVAC may be the answer. “Veterans are used to getting up early, being on time, wearing a uniform, and they are dedicated and committed,” says Marvin Key, CEO and Co-F...
HVAC systems typically operate on a schedule. Heating, cooling and ventilation systems start and stop at fixed times of the day, scheduled around when and how a building is used. But, shouldn’t the number of occupants in a building or a room have an impact on how the HVAC system operates? Considering occupancy, when addressing HVAC needs, is an especially timely approach, given that building schedules are less predictable now, since the COVID-19 pandemic changed work patterns, possibly fo...
Natural gas heating and cooking are coming under more scrutiny, especially their negative impact on indoor air quality. In particular, nitrogen dioxide (NO2) emitted from gas stoves and furnaces aggravate childhood asthma. The issue has been obvious for years but is now getting renewed attention of regulators. Gas heating and cooking are popular throughout the United States and Europe. One estimate is that a third of U.S. homes use natural gas for cooking, which has been promoted for decades as...
The concept of district heating refers to a group of customers, or even a whole city, which shares a system providing ambient heat, often using steam or water heated by sources that emit less carbon dioxide. A network of insulated pipes, constructed underground in a community, transports the heat among customers, and various meters and billing systems keep up with how much heat is provided. District heating District heating is seen as an increasingly important option, as municipalities seek to...
‘Net zero’ is an unavoidable reality in the continuing fight against climate change. For example, both the United Kingdom and the European Union have set targets of having net-zero greenhouse gas emissions by 2050. These objectives are in line with a commitment to global climate action under the Paris Agreement. Net zero - carbon neutral Net zero refers to the balance between the amount of greenhouse gas produced and the amount removed from the atmosphere. It’s another term f...
High school seniors and their parents weigh multiple factors, when choosing a college or university. In the aftermath of the COVID-19 pandemic, the importance of one factor has shown a marked increase. Indoor air quality (IAQ) is now among the top-three aspects that an applicant and their parents would consider, when choosing a college, according to one survey. Growing awareness of IAQ Growing awareness of IAQ presents an opportunity, as the HVAC industry seeks to serve the higher education ma...
When COVID-19 hit, North Arkansas College had to close its school, and students had to transition from in-person to online learning, which is especially difficult when teaching a trade that is heavily dependent on hands-on training. The HVAC/R program at North Arkansas College, which has existed for over 50 years, typically has an average of 14 to 16 students enrolled each year. HVAC/R program “With the quick transition we had to think outside the box, and so we found a company that had...
The current Biden Administration’s renewed focus on climate change has expedited the phasedown of high-GWP refrigerants, kicked off by the passage of the American Innovation and Manufacturing (AIM) Act, part of the December 2020 COVID stimulus bill. As the AIM Act phase-down schedule progresses, higher-GWP HFC refrigerants, while viable, have the potential to have a limited useful life and ultimately be eliminated. In response to pending changes, Johnson Controls has announced it will use...
Interfacing with HVAC products is increasingly complex. The tiny 1-inch LCD display included on systems does not lend itself to complicated functions. Keeping the HVAC user interface simple limits control options to on/off, mode change or choosing a temperature. Thermostat controls company COTHERM has developed a smartphone app that can be used to control complex functions such as product settings during installation, programming or providing technical information about an HVAC product. Near f...
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...
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...
The term ‘robotics’ refers to technology or machines that substitute or replicate human actions. ‘Human augmentation’ is another term, referring to the use of technology to reduce strain and fatigue as workers perform strenuous tasks over long periods of time. Hilti Group has introduced robots and semi-automated technologies to the construction trades, including HVAC. The role of these technologies in the HVAC market is to increase efficiency and accuracy, reduce costs,...
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...
Duct tape is both the most familiar product associated with the HVAC industry and, in many cases, not fit for purpose. Duct tape is also misunderstood. In fact, the product began as waterproof cloth tape that was called “duct tape,” emphasizing its ability to withstand moisture. Misinterpretation of duct tape Many tape products now identified as “duct tape” are not suitable for use with HVAC systems, which require permanence and the ability to withstand prolonged heat...
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. Sustaina...
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 conditi...
The cruise ship industry has cracked the code on keeping passengers and crew safe from the coronavirus (COVID-19) spread, including changes to on-board HVAC systems to use more outside air and to filter out particles as small as the novel coronavirus. The industry, which voluntarily suspended worldwide operations at the beginning of the COVID-19 pandemic, under the guidance of international and national health authorities, plans to resume worldwide operations fully later in 2021. Health protoc...
The demographics of the HVAC workforce are changing and more women are being welcomed into the HVAC industry in a wider variety of roles. In part, the changes are because of necessity as Baby Boomers retire from the workforce and leave a labor and skills gap to be filled. HVAC commercial service business, HB McClure Company, based out of Harrisburg, Pennsylvania, is embracing change and encouraging more women to consider a career in the HVAC workspace. The company’s female employees are h...
The computing power we know as the Internet actually resides in millions of data centers that house rows and rows of computer servers. And each data center represents a unique HVAC challenge: How to keep the equipment cool, the air pure and the humidity low. Providing the ideal operating conditions for a room full of computers requires the best that the HVAC market can offer. Data centers come in all shapes, sizes and configurations. Some are huge facilities that serve the needs of giants...
Deadly cold weather recently made headlines in Texas, where wintry conditions knocked out power to around 4.5 million homes at one point. Power outages, combined with freezing conditions, sent Texans scrambling for home heating alternatives, such as generators and fireplaces, and to seek shelter in powered warming centers or businesses. Some resorted to living in running cars. Snow, ice and extreme cold have been widespread this year in the Mid-Atlantic and Northeast United States, too. At one...
Imagine a HVAC system that captures cardon dioxide and water from the air to be converted into renewable hydrocarbon fuels that can take the place of fossil fuels. This futuristic approach is a reality today, although on a small scale with little impact – for now. The challenge is to scale up the processes to create a “circular” CO2 economy that uses chemical processes to create renewable synthetic oil that substitutes for non-renewable fossil-based oil, while eliminating emis...
Millennials have been shaped by their experiences growing up with technology and by their heightened awareness of the environment. These facets of a consumer market dominated by millennials will guide the future of the HVAC market over the next several years. Each generation reshapes markets in their own image. In the case of millennials, trends and behaviors are influencing how companies design new solutions, including those in the world of HVAC. Sustainable solutions and personalized experie...
Closed and cramped environments are especially problematic to the spread of the novel coronavirus that causes COVID-19. A ‘smart’ glass-paneled bus stop shelter, developed in Korea, embodies new approaches to making such spaces safe, including elements of HVAC. Smart shelters The smart shelters are closed-in glass cubes that serve as bus stops in the Seongdong district in northeastern Seoul, South Korea. The local district office collaborated with LG Electronics to develop the futu...
The Wyss Institute at Harvard University has developed an evaporative cooling system that uses a specially coated ceramic to cool air without adding humidity. Researchers say the approach can yield more affordable and environmentally friendly air conditioning systems for the future. ‘cold-SNAP’ system The ‘cold-SNAP’ system uses a water-repellent nano-scale surface coating that is applied selectively to surfaces of a 3D-printed ceramic heat exchange. The result is much...
Lower prices in the oil and gas industry have led to job losses as the sector has contracted recently, and that was even before the COVID-19 pandemic wreaked additional havoc on the national and world economies. The COVID-19 crisis is accelerating what was already shaping up to be one of the oil industry’s most challenging years. More than a dozen oil companies have declared bankruptcy so far in the United States alone, and widespread industry layoffs are expected to continue. Oil field...
HVAC systems are the most common home repair, representing 19 percent of service incidents facing homeowners. More than half of homeowners (53%) have faced a home repair emergency of some kind in the past 12 months. Furthermore, about a third of homeowners have US$ 500 or less set aside to pay for emergency home repairs, with some 17 percent having no money at all set aside for emergency home repair work. 10th Edition of the Biannual State of the Home Survey These are among the results of the...
Newer buildings tend to be designed to be ‘green’, but what about older existing buildings, which still represent the largest share of environmental impact? There is more work to be done in the retrofit sector; and improving environmental performance of older buildings often involves ‘deep retrofits’ that are costly and impact multiple factors inside a building. In the COVID-19 era, there is also growing concern about needs such as circulating outside air, increasing hum...
