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May 28, 2024
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By Dave Moser, P.E., Member ASHRAE
Variable frequency drives (VFDs) are an energy-efficient method of matching system output to the load. Energy engineers often estimate the power draw of a VFD-driven system using the full load (100% speed) power draw and the estimated or actual operating speed. This article offers guidance on the equations to use when developing those calculations and aims to clarify the differences between the speed-to-power and flow-to-power exponent values. Read more
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By Bertrand Lasternas, Member ASHRAE
School of Design and Environment 1 in Singapore is an intelligent adaptive reuse project that reinvents the legacy of a 1970s institutional building by accommodating a net zero energy, high-comfort academic environment of the future. The building design creates a series of lightshelves to drive daylight deep into the floor plate, while an ascending succession of screens folds to filter solar radiation while providing views and natural ventilation. Read more
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Hamed Yassaghi, Ph.D., Associate Member ASHRAE, talks with the Journal technical editor about data center IECC 2021 compliance strategies in hot climates with air-cooled chillers. This column appears in the May 2024 issue of ASHRAE Journal. Check out the column here.
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Interview with Andrew Pansulla
For nearly 100 years, chemists have been charged with addressing a growing list of factors when developing the “next new” refrigerant to serve market needs. These factors have ranged from performance and sustainability to safety, economic viability and more. This article explains some of the challenges of the global refrigerant transition as well as safety measures and adhering to ASHRAE standards as the market transitions to mildly flammable A2L refrigerants. Read more
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Access Month Digital ASHRAE Journal
This month’s issue of ASHRAE Journal includes topics such as how much condensation occurs with various insulation thicknesses, the impact of outdoor air ventilation in school corridors and what a “single pane of glass” interface is. Access the digital edition here.
Past Issues
All articles and columns published in ASHRAE Journal since 1997 are available in pdf format at no cost to members through ASHRAE’s Technology Portal.
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With energy efficiency being one of the four decarbonization pillars in the U.S. Department of Energy’s Industrial Decarbonization Roadmap, this presentation will explore how radiant heating and cooling systems can help achieve decarbonization goals in new construction and renovation projects. This is a continuation of the “Leveraging Radiant and Hydronics to Achieve Decarbonization Goals” webinar held on Oct. 19, 2023.
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