Refrigeration

Converting Away From R-22

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With the impending phaseout of R-22 looming, the price and availability of the product will soon make it impractical to use. With virtually tens of millions of R-22-designed a/c systems in operation, refrigerant users and equipment owners will need to employ a number of alternative options to satisfy their cooling needs.


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Safe Servicing of HCs

By Peter Powell
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HC refrigerants have an A3 safety rating, meaning there are flammability issues. Even so, the U.S. Environmental Protection Agency (EPA) officially gave Significant New Alternatives Policy (SNAP) approval to R-290 (propane), R-600a (isobutene), and R-441A (a blend marketed by ComStar International as HCR 188c).


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Bitzer Rolls Out Products at RETA Event

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Bitzer U.S. Inc. launched new products at the Refrigeration Engineers Technicians Association (RETA) show in San Antonio this past November. The company announced it was assembling ammonia packages ranging from simple motor-compressor combinations on rails up to complete rotary screw compressor packages.


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Honeywell Announces New Refrigerant

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Honeywell has announced the availability of an HFO refrigerant, which it trademarks as Solstice™ L-41 low global warming potential (GWP) refrigerant, designed as a lower GWP alternative to R-410A.  


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Taking Opposite Sides on the Same Refrigerant

By Peter Powell
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This past fall, the automobile manufacturer Daimler came out saying it was holding off using HFO-1234yf for auto air conditioning even though a directive from the European Union was calling for moving away from HFC-134a. Some saw that as a question about how much traction HFOs were getting as long-term alternatives to HFCs.


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2013 AHR Expo Product Roundup: Refrigeration + Ice Machines

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The NEWS staff was very busy at the AHR Expo in Dallas, seeking information on new products. Here is a comprehensive list of the refrigeration and ice machine products we found on the show floor.


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The Professor: Compressor Overheating

By John Tomczyk
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Compressor overheating is often referred to as the HVACR industry’s most serious field problem.


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Ice Breaker: Hand Tool Safety

By Joe Marchese
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Many careless injuries are the result of rushing to complete a task and not taking the necessary time to do it right.


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Considering Cascade, Transcritical, Transport, and Heat Pumps

By Peter Powell
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CO2 as a refrigerant in cascade supermarket systems, transcritical applications, transport refrigeration, and heat pumps were among major developments in recent years. Here is a summary of those developments.


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EPA Further Tightens the R-22 Spigot

2013 Allocation Reduced to 39 Million Pounds
By Peter Powell
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It appears as if the spigot of new R-22 available to HVACR contractors has been tightened even more in 2013. Users of the world’s most popular HCFC could expect close to 30 percent less of new R-22 this year than last, according to some reports.


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NEWSMakers: Joseph Groh

Joseph Groh, an industry veteran boasting 35 years of HVAC experience, discusses the 2008 bicycle accident that cut his career tragically short, and how the Joseph S. Groh Foundation is his way of giving back to the construction trade. Posted on Aug. 22.

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Prohibiting HFCs

EPA is proposing a rule that would prohibit some HFCs in select refrigeration applications. Do you agree with this move?
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