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Revising A3 refrigerants charge limits to promote wider application

A recent IJR paper examines the validity and form of charge limits for “highly flammable” A3 refrigerants, which constitute low-GWP alternatives to HFCs. Authors propose to eliminate upper charge limits for indoor systems whilst retaining allowable charge limits.

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In an effort to reduce greenhouse gas emissions, the refrigeration, air conditioning and heat pump (RACHP) industry has been focusing more on the use of hydrocarbons (HCs). HCs are low-GWP alternatives to hydrofluorocarbons (HFCs), with the disadvantage of being more fla...

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