Vapor compression refrigeration system having ejector
OwnerMika Saito, Hirotsugu Takeuchi +1inventors
InventorsMika Saito, Hirotsugu Takeuchi, Hiroshi Oshitani
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Abstract
Piping, which connects between a radiator and an ejector, is covered with a thermal insulator to thermally insulate a refrigerant passage defined in the piping. Thus, it is possible to limit a reduction in enthalpy of refrigerant, which could be induced by cooling of high temperature refrigerant by low temperature atmosphere to lose the enthalpy before depressurization of the high temperature refrigerant through the ejector. As a result, it is possible to limit a reduction in a theoretical value of recoverable energy at the time of depressurization and expansion of the refrigerant.
Claims8
A vapor compression refrigeration system that transfers heat from a low temperature side to a high temperature side, wherein the temperature of the high temperature side is higher than that of the low temperature side, the vapor compression refrigeration system comprising:
- a compressor that compresses refrigerant;
- a radiator that cools high pressure refrigerant discharged from the compressor;
- an evaporator that evaporates refrigerant;
- an ejector that depressurizes and expands high pressure refrigerant supplied from the radiator to draw evaporated vapor phase refrigerant evaporated in the evaporator, such that the ejector converts expansion energy of refrigerant to pressure energy to increase intake pressure of the compressor;
- and
- a refrigerant passage means for fluidly connecting between the radiator and the ejector, wherein the refrigerant passage means is substantially, thermally insulated from a surrounding atmosphere that surrounds the refrigerant passage means.
Dependencies are inferred from the claim text.