CRYOGENIC REFRIGERATION OF A PROCESS MEDIUM
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United States of America Patent
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Mar 18, 2021
app pub date -
Feb 25, 2019
filing date -
Feb 26, 2018
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Abstract
The present invention pertains to a cryogenic refrigeration system and method for cryogenic refrigeration of a process medium. In particular, the invention relates to a counter flow heat exchanger configuration and pressure regulator arrangement to reduce exergetic losses in the system. Accordingly, a cryogenic refrigeration system is suggested comprising a conduit (2) configured to provide a supply flow (10) of a process medium, a counter flow heat exchanger (3), which is thermally coupled to a heat exchanger section (2A) of the conduit (2) and comprises an inlet (34) at a cold end (30) of the heat exchanger (3) and an outlet (36) at the warm end (32) of the heat exchanger (3), a first pressure regulator (4), which is in fluid communication with the conduit (2) and is arranged downstream of the heat exchanger section (2A), and a vessel (5), which is in fluid communication with the conduit (2) and is arranged downstream of the first pressure regulator (4), wherein the vessel (5) is in fluid communication with the inlet (34) of the heat exchanger (3) and is configured to provide an evaporated gas flow from the process medium to the inlet (34) of the heat exchanger (3). Furthermore, the conduit (2) is free of any evaporation heat exchanger upstream of the heat exchanger section (2A) of the conduit (2).
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