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Publisher Summary. This chapter describes the fundamental principles of thermodynamics related to refrigeration and air-conditioning. The general temperature scale in use is the Celsius scale, based nominally on the melting point of ice at 0°C and the boiling point of …
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Get Price2020-2-1 · 1. Introduction. Ammonia (NH 3) is one of the most important and widely produced inorganic chemicals in the world, which can be used (1) to produce agricultural fertilizers like ammonium nitrate, ammonium phosphate, and urea , (2) as a capturing agent in acid gas removal (AGR) processes , (3) for large scale refrigeration and air-conditioning for buildings and industrial processes , (4) to ...
Get PriceR-404A began seeing usage in 1996 after the phase out of CFC R-502 due to it’s Ozone Depletion Potential. R-404A is a ternary refrigerant blend consisting of the HFC R-125 (forty-four percent), HFC R-143a (fifty-two percent), and HFC R-134a (four percent). R-404A is used across a variety of low and medium temperature applications including ...
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Get Price1,2-Dichloro-1,1,2-trifluoroethane (HCFC-123a) is a potential alternative to replace ozone -depleting chlorofluorocarbons. The metabolism of HCFC-123a was studied in microsomes of rats, mice, and humans as well as in rats and mice in vivo. Rat, mouse, and human liver microsomes metabolized HCFC-123a to inorganic fluoride and ...
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