The Air-Conditioning, Heating, and Refrigeration Institute (AHRI) is moving forward with an ambitious project to identify low global warming potential (GWP) refrigerants. What does that mean?
Minimizing frost accumulations on refrigerator evaporator coils and fins, the Ice*Meister™ Model 9734-REFR optical defrost controller can be used in commercial walk-in refrigerators and reach-in refrigerated display cases, and other self-defrosting chiller systems in supermarkets, restaurants, school cafeterias, and more.
Oil separators are essential on low and ultra-low temperature refrigeration systems and on large air conditioning systems up to 150 tons. Most compressor manufacturers require oil separators on all two-stage compressors.
In addition to the 10 AHR Expo Innovation Award winners highlighted in this issue, 31 other products have been recognized with honorable mentions in the same 10 product categories. The honorable mentions are listed here.
About this time of year, editors and columnists in the HVACR industry do editorials and columns encouraging attendance at the annual International Air-Conditioning, Heating, and Refrigerating Exposition (AHR Expo), this year taking place Jan. 23-25 in Chicago. It’s on the ‘R’ that I want to focus.
Refrigeration contractors know that there are several upsides to ammonia refrigerants. The most common is its compatibility with the environment. Ammonia does not contribute to global warming because it does not deplete the ozone layer. It has thermodynamic qualities that require less electricity in its usage.
The long-term availability of HFCs survived another effort at phase-down during the 23rd Meeting of the Parties (MOP23) to the Montreal Protocol held in November 2011. Participants did not reach agreement on taking any action to control HFCs.
Low pumper compressors can be devilish to diagnose properly. None of us wants to replace a compressor that is not bad. With more than 40 years of experience, I want to offer some thoughts.
Longo’s Supermarkets needed an environmentally friendly, cost-effective warehouse refrigeration, Neelands Refrigeration Ltd. and Hill Phoenix® had an answer.
Ultra-low temperature systems are used to achieve low temperature baths or boxes for laboratory use, storage of pharmaceutical or biological samples, low temperature manufacturing of metals, or extreme temperature environmental testing.
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