Method of protecting a two phase refrigeration unit from...

Details Method of protecting a two phase refrigeration unit from... Method of protecting a two phase refrigeration unit from...

F - Mech Eng,Light,Heat,Weapons

25

B

F25B 41/00 (2006.01) F24F 13/30 (2006.01) F25B 49/02 (2006.01)

Patent

CA 2470504

A method of protecting a two phase refrigeration unit from temperature fluctuations. A single phase cooling unit is placed outside of the building being cooled by the two phase refrigeration unit. A heat exchanger is used as the condenser for the two phase refrigeration unit, with the two phase coolant circuit routed through the heat exchanger. A single phase coolant circuit is extended from the single phase cooling unit outside of the building, into the building and through the heat exchanger. This provides a heat exchange between the single phase coolant circuit and the two phase coolant circuit. A temperature sensor or pressure senor is selectively positioned along the two phase coolant circuit. Controls are provided to activate a circulation pump for the single phase coolant circuit whenever the temperature or pressure of the two phase coolant circuit rises above a preset threshold and thereby maintain the two phase refrigeration unit operating with its two phase coolant within a desired operating temperature range.

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