Heat pump water heating system using variable speed compressor

Details Heat pump water heating system using variable speed compressor Heat pump water heating system using variable speed compressor

F - Mech Eng,Light,Heat,Weapons

25

B

F25B 1/00 (2006.01) F25B 49/00 (2006.01) F25D 17/00 (2006.01)

Patent

CA 2616286

A transcritical refrigeration system includes a compressor, a gas cooler, an expansion device, and an evaporator. Refrigerant is circulated though the closed circuit system. Preferably, carbon dioxide is used as the refrigerant. A variable speed drive controls the speed of the refrigerant flowing through the compressor. Varying the speed of the refrigerant flowing through the compressor changes the mass flow rate of the refrigerant in the system to optimize the coefficient of performance.

La présente invention concerne un système de réfrigération trans-critique qui comprend un compresseur, un refroidisseur gazeux, un dispositif d~expansion et un évaporateur. Un fluide de refroidissement circule dans le système en circuit fermé. De préférence, du dioxyde de carbone est utilisé comme fluide de refroidissement. Un variateur de vitesse commande la vitesse du fluide de refroidissement s~écoulant dans le compresseur. La variation de la vitesse du fluide de refroidissement s~écoulant dans le compresseur change le débit massique dudit fluide dans le système afin d~optimiser le coefficient de performance.

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