Patent ID: 6672082
Filing Date: 2004-01-06
Classification: F24F,F25B,Y02B

Abstract:
A heat pump comprising:a pressurizer for raising a pressure of a refrigerant; a condenser for condensing said refrigerant to heat a high-temperature heat source fluid; an evaporator for evaporating said refrigerant to cool a low-temperature heat source fluid; and heat exchanging means disposed in a refrigerant path connecting said condenser and said evaporator, for evaporating and condensing the refrigerant under an intermediate pressure between the condensing pressure of said condenser and the evaporating pressure of said evaporator to cool said low-temperature heat source fluid by evaporation of said refrigerant under said intermediate pressure and to heat said low-temperature heat source fluid by condensation of said refrigerant under said intermediate pressure; wherein said low-temperature heat source fluid is successively cooled by said heat exchanging means, cooled by said evaporator, and heated by said heat exchanging means in the order named.