| 摘要 |
PURPOSE: To promote cooling of a refrigerant due to a free heat conversion fluid, by increasing a main flow passage surrounded by a frozen outer envelope previously produced during a heat storage cycle with respect to a refrigerant fluid exposed to the free heat conversion fluid during a supply cycle where the refrigerant fluid passes. CONSTITUTION: During an ice making/heat storage cycle in which a low temperature liquid refrigerant is received from a chillar through an inflow pipe 38, and is sent to an outflow pipe 40 after passage through a freezing pipe 6 and is returned to the chillar, a low temperature refrigerant solidifies a heat conversion fluid in a pool 30 around a freezing pipe 36, and stores and forms an ice outer envelop around each freezing pipe. Then, a supply cycle is started with circulation to an air conditioning apparatus from the outflow pipe 40 of the liquid refrigerant, and in the air conditioning apparatus the refrigerant is heated (absorbs heat) and is returned to the freezing pipe 36 after passage through the inflow pipe 38 where the liquid refrigerant is cooled with the surrounding ice envelope. The heat conversion apparatus is improved in its function by additionally providing an auxiliary counduit 50, and the auxiliary conduit serves to extend a passage of the liquid refrigerant used for cooling the inside of the heat conversion apparatus with the aid of contact with non-frozen heat fluid only during the supply cycle. |
