GEOTHERMAL HEAT PUMP SYSTEM AND CONTROL METHOD FOR

专利名称：GEOTHERMAL HEAT PUMP SYSTEM AND

CONTROL METHOD FOR GEOTHERMALHEAT PUMP SYSTEM

发明人：AOYAGI, Yoshiro申请号：EP179162.9申请日：20171024公开号：EP3495753A1公开日：20190612

专利附图：

摘要：A geothermal heat pump system includes a heat pump apparatus, a hot-waterheating apparatus, and a controller. The heat pump apparatus includes a compressor, a

first heat exchanger configured to exchange heat between water supplied to a load sideand refrigerant, an expansion valve, a second heat exchanger configured to exchangeheat between the refrigerant and a heat medium, a heat collection pump and a third heatexchanger configured to exchange heat between the heat medium and geothermal heat.The heat collection pump, the second heat exchanger, and the third heat exchanger areconnected in sequence by pipes, forming a heat collection circuit through which the heatmedium circulates. The hot-water heating apparatus supplies hot water to a load side.The heat collection circuit includes a bypass mechanism allowing the heat medium tobypass the third heat exchanger when the heat medium circulates. The controller drivesthe bypass mechanism at the start of operation of the geothermal heat pump system. Inthis state, the controller estimates concentration of brine in the heat medium circulatingthrough the heat collection circuit, determines whether the concentration of the brinefalls outside an appropriate range, and stops operation when the concentration of thebrine falls outside the appropriate range.

申请人：MITSUBISHI ELECTRIC CORPORATION

地址：7-3, Marunouchi 2-chome Chiyoda-ku Tokyo 100-8310 JP

国籍：JP

代理机构：Pfenning, Meinig & Partner mbB

更多信息请下载全文后查看