Patent ID: 6370896
Filing Date: 2002-04-16
Classification: F24H,F25B,Y02B

Abstract:
A hot water supply system for heating hot water generating fluid via a heat pump cycle in which a refrigerant on a high-pressure side thereof reaches a pressure level greater than or equal to a critical pressure of the refrigerant, comprising:a compressor for sucking and compressing a refrigerant; a radiator for subjecting the compressed refrigerant and the hot water generating fluid to heat exchange, and for defining flow paths so that the compressor-discharged refrigerant and the hot water generating fluid flow in opposite directions; a decompressor for decompressing the refrigerant flowing from said radiator; an evaporator for evaporating the refrigerant flowing from said decompressor, to cause the refrigerant to absorb heat, and to output the refrigerant toward a suction side of said compressor; and a controller for controlling the refrigerant pressure on the high-pressure side so that a temperature difference &Dgr;T between the refrigerant flowing from said radiator and the hot water generating fluid flowing into said radiator reaches a predetermined level &Dgr;T0.