Patent ID: 8151586
Filing Date: 2012-04-10
Classification: F24D,Y02B

Abstract:
1. A hot water supply and air conditioning system using CO 2 heat pump cycle, the CO 2 heat pump cycle including a compressor which compresses the CO 2 to beyond a critical point, a gas cooler which exchanges heat with the CO 2 being beyond the critical point and heats water, a pressure reducing device which reduces a pressure of the CO 2 flowed out from the gas cooler, and an evaporator which cools the reduced CO 2 , the compressor, the gas cooler, the pressure reducing device and the evaporator being connected in sequence for supplying a heat source to hot water supplying equipment and air conditioning equipment through independent pipe lines, the hot water supplying and air conditioning system comprising: a low temperature water tank for storing low temperature water of 25° C. or lower, a high temperature water tank for storing high temperature water of 60° C. or higher supplied from the low temperature water tank and heated in said gas cooler, two pipings for extracting the high temperature water, connected to an outlet of the high temperature water of said high temperature water tank separately from said gas cooler, hot water supplying equipment connected to one of the pipings for extracting the high temperature water to be supplied with the high temperature water, a first heat exchanger connected to the other of the pipings for extracting the high temperature water to be supplied with the high temperature water, room heating equipment as said air conditioning equipment connected to a heat-exchanged side of the first heat exchanger, to which a heat giving fluid heat-exchanged with the high temperature water is supplied, a piping for a middle temperature water cooled to the temperature of 60° C. or lower by heat exchange with heat receiving fluid through the first heat exchanger, the piping for the middle temperature water connecting an outlet of the first heat exchanger and an inlet of a second heat exchanger for the middle temperature water to introduce the middle temperature water into the second heat exchanger, cooling water supply equipment for producing cooling water by heat exchange of brine in a circulating line with city water such as river water, snowmelt water, sewage water or waste water, a middle temperature water cooling system for cooling the middle temperature water by introducing the cooling water from the cooling water supply equipment in the second heat exchanger, and a piping for introducing the low temperature water into the low temperature water tank, the low temperature water being heat-exchanged with cooling water in the second heat exchanger and cooled to the temperature of 25° C. or lower.