HEAT RECOVERY TYPE CHILLED AND WARM WATER SUPPLYING APPARATUS

摘要

PURPOSE: To reduce the starting and stopping frequency of an apparatus and to improve the efficiency of the apparatus by solely operating chilled water and warm water supply via a chilled water heat exchanger and a warm water heat exchanger common to both refrigerating cycles at each cycle in a chilled and warm water supplying apparatus having two refrigerating cycles. ;CONSTITUTION: Two refrigerating cycles condense and liquefy the discharge refrigerant gas of a compressor by an air side heat exchanger via a four-way valve and a solenoid valve at the time of cooling, supply the chilled water exchanger common for both the cycles via a pressure reducing unit, heat exchanges with the chilled water to directly cool it. At the time of heating, the discharge refrigerant gas is passed through the four-way valve, heat exchanged with the warm water by a warm water heat exchangers common for both the cycles to heat the warm water. On the other hand, at the time of heat recovery, the gas is passed through the four-way valve, heat exchanged with the warm water by the warm water heat exchanger to be heated and the condensed and liquefied refrigerant is passed through the unit, heat exchanged with chilled water to cool the chilled water.;COPYRIGHT: (C)1996,JPO