Refrigerants

RSS

If hydrofluorocarbons (HFCs) are to have long-term viability, the low-global warming potential (GWP) versions will have to separate themselves from high-GWP types. And the survivors will have to play their part in energy efficiencies, especially in commercial buildings.

CO2 as a refrigerant has been a part of the refrigeration landscape for close to a decade. The most anticipated next step was running CO2 as a standalone refrigerant in a system, which is being done in Europe in more and larger applications. Finally, the approach crossed the Atlantic.

This article is the second of a two-part series in response to the question: “Should I choose CO2 (R-744) for my refrigeration system?” It was prepared by engineers with M&M Refrigeration of Federalsburg, Maryland.

This story was prepared by Danfoss and brings readers up to date on developments in Europe concerning HFC refrigerants. While what happens in Europe does not automatically reflect what will happen stateside, it would be wise for contractors in the United States and Canada to monitor developments overseas.

Emerson Climate Technologies announced that it is preparing an industry communication to the U.S. Environmental Protection Agency’s (EPA’s) recent notice of proposed rulemaking (NOPR) that would delist some refrigerants commonly used in supermarkets and commercial refrigeration equipment.

Martin C. Eldridge III now faces 31 months in federal prison for releasing the refrigerant, which is currently being phased out of production in the U.S. due to its threat to the earth’s ozone layer.

Here, manufacturers of large machinery bring some of their latest developments, along with the range of products and services on display every year.

The EPA says a number of unapproved refrigerants with “22a” or “R-22a” in the name contain highly flammable hydrocarbons such as propane. 

All frost means is the suction line or compressor is below freezing, and the moisture in the air has reached its dew point temperature and condensed. 

A ton of refrigeration can be defined as the amount of heat removal to produce one ton of ice at 32° from one ton of water at 32°. But what else does it mean?