May 2021
Staying Frosty with A2L Refrigerants
The world of refrigerants, as we know it, is changing once again. Regulatory drivers and increasing efficiency demands are helping to shape the course of our industry.
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May 2021
How Humidity Affects Temperature Drop
When the humidity(water vapor) content of air entering a cooling coil is elevated, the temperature drop of air across that cooling coil is less than normal. When water vapor content of entering air is low, the temperature drop of air across the coil will be greater than normal.
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May 2021
Pandemic Spurs Interest in Germicidal UV-C for Air Disinfection
Many refrigeration engineers may be familiar with the restorative abilities of Ultraviolet Germicidal Irradiation (UVGI or UV-C) energy to remove biological growth from cooling coils and return cooling capacities to original design specifications.
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May 2021
Troubleshooting: Some Defrost, Some Don't
This month’s Troubleshooting section is a problem about defrost, some of the low-temp cases are not defrosting completely or they are defrosting sporadically.
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May 2021
Leading Off: Running an RSES Chapter
Do you attend RSES meetings for the education, the business meeting or both? Most people will say they attend for the education. The business meeting may not be the most exciting thing, but is important to keep the Chapter/Association running.
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May 2021
Multiply Refrigeration Advantages with Multiplex System Design
Over the past several years, the drivers impacting the choice of refrigeration systems used in supermarket and restaurant applications have evolved significantly.
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May 2021
Last Word: The Importance of Community
In this month’s issue, RSES International President Mike Ralston, CM went into detail on how to put together an RSES Chapter. It is a great piece that highlights the hard work that goes into running a Chapter smoothly. What I want to talk about is the other side of that coin: why Chapters and a sense of community is important to RSES and should be important to you as an HVACR professional.
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Apr 2021
Heat Pumps Helping to Decarbonize the Residential Buildings Sector
To achieve deep decarbonization, buildings must address both electrical and direct fossil fuel combustion.
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Apr 2021
Know the Basics of Electrical Wiring Diagrams
One of the ultimate goals of heating, ventilation, air conditioning and refrigeration service technicians is to accurately troubleshoot malfunctioning HVACR systems.
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Apr 2021
2021 Refrigerant Rulemaking
THE REGULATION OF REFRIGERANTS continues to be a source of great uncertainty in the commercial refrigeration industry. At the heart of this issue is the potential for carbon emissions from hydrofluorocarbon (HFC) refrigerants and their collective contribution to climate change.
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