JPS6433445A - Heat accumulator using crystal liquid ice of heat pump type - Google Patents

Abstract

PURPOSE:To make it possible even in a cold area to accumulate enough heat and raise the cooling effect collectively by providing a communication passage in parallel to a coolant circulation circuit with a super-chiller between them and providing an evaporator at an intermediate section of the communication passage. CONSTITUTION:Crystal liquid ice made in a super-chiller 5 is sent to a heat accumulating tank 14 by ice through a cold water channel 13 by a cold water primary pump 13A and it is accumulated as a thermal source. The cold water which was cooled by the thermal source in the heat accumulating tank 14 by ice is supplied as needed to an air conditioner from a cold water circulating circuit 15 by a cold water secondary pump 15A. On the other hand, part of the coolant which passes through an expansion valve 4 flows to a communication channel 16 from a second three-way valve 12, and then flows through an evaporator 17, D-point, four-way valve 6, and compressor 2 and the coolant evaporates in the evaporator 17. Accordingly, the coolant evaporates not only in the super-chiller 5 but also in an evaporator 17 so that the evaporation efficiency is improved. As a result, the condensation effect of the coolant in the condensator 3 is improved. That is, the quantity of the condensation heat developed in the condensator 3 becomes larger.