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Pressures in refrigeration systems Mollier diagram, R-22, R-410A, R-134A gas Superheat and subcooling. These are the topics covered in this video. The parameters explained are based on the AHRI-540 standards but there are other standards used to manufacture refrigeration systems such as ASHRAE, CECOMAF and EN-12900, so the parameters are not absolute values but rather working ranges and you just have to know how to apply the concepts discussed here. Welcome to the “Te lo Explica el Diamante” channel.