Transcritical R744 refrigeration system for skating rinks with total condensation and without flash-gas bypass
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United States of America Patent
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Nov 21, 2017
Grant Date -
Jun 4, 2015
app pub date -
Dec 3, 2014
filing date -
Dec 3, 2013
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Abstract
A transcritical R-744 refrigeration system, especially used for refrigerating a skating rink, has a heat exchanger between the gas cooler followed by a throttling device and the flash tank (or receiver), in order to eliminate the need of a flash-gas bypass. The heat exchanger connects to an external mechanical refrigeration system operating at a higher evaporating temperature than the transcritical R-744 refrigeration system, and generally totally condenses the vapor of the R-744 refrigerant before it reaches the flask tank. A method for improving the energy efficiency of the transcritical R-744 refrigeration system is also disclosed.
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