Refrigerants

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On July 2, the U.S. Environmental Protection Agency (EPA) issued its Final Rule — Protection of Stratospheric Ozone: Change of Listing Status for Certain Substitutes under the Significant New Alternatives Policy Program.

If refrigerant migration occurs in a system that has a crankcase heater, the vapor will be forced away from the crankcase and end up in the suction line. This refrigerant may condense in the suction line and cause slugging in the compressor’s cylinders on startup. 

Thinking in temperature in-stead of pressure can help make the crossover to a new refrigerant much easier. The next time you’re faced with determining the correct operating evaporator or condensing pressure, think in terms of temperature and then convert it to pressure.

The plan that emerged from the Chemical Facility Safety and Security Working Group includes improved coordination and information sharing across DHS, OSHA, and the EPA as well as better coordination with state and local officials including the first-response community. 

The world is moving toward natural refrigerants. That was the message from the leadership of the International Institute of Ammonia Refrigeration (IIAR) at the 2015 IIAR Industrial Refrigeration Conference and Exhibition in San Diego.

Extech Instruments has introduced the RD300, a heated diode refrigerant leak detector that pinpoints leaks of all CFC, HCFC, and HFC refrigerants with three levels of sensitivity to leaks as small as 0.25 ounce (7 grams) per year.

Emerson Climate Technologies Inc. will host a webinar, “Seven Keys to Servicing CO₂ Systems,” to explore the many operating implications of a CO₂ (R-744)-based refrigeration system. The complimentary webinar will be held Tuesday, July 14, from 2 to 3 p.m. EDT.

If it sometimes seems confusing and difficult to identify and keep track of the various treaties and regulations that are having an effect on the refrigerants industry, that’s because it is. Here is a brief primer.

Between the Department of Energy (DOE) and the Environmental Protection Agency (EPA), HVACR contractors might feel as if they are facing a one-two regulatory punch. Especially on the refrigeration side, new regulations roll out of both the DOE and EPA regularly enough to keep things — shall we say — interesting.

The U.S. Environmental Protection Agency (EPA) and the U.S. Department of Justice (DOJ) have announced a final settlement with Millard Refrigerated Services that resolves alleged violations related to an airborne release of ammonia from Millard’s Theodore, Alabama, facility in 2010.