THIN-SHELL-TYPE HEAT EXCHANGER, AND HEAT PUMP SYSTEM AND METHOD UTILIZING UNDERGROUND WASTE HEAT SOURCE

摘要

The present invention discloses a thin-shell heat exchanger, a subway waste heat source heat pump system, an installation and construction method of the thin-shell heat exchanger, and an operating method of the system. The system comprises the thin-shell heat exchanger, a compressor, a condenser, an evaporator, a terminal heat exchanger and an auxiliary cold source, wherein the high temperature liquid was delivered to the evaporator through a circulation loop between the thin-shell heat exchanger in the surrounding rock of subway tunnel and a heat pump unit, the evaporator delivers the high temperature liquid to the condenser through the compressor, low temperature return water at the terminal heat exchanger is delivered to the condenser through a circulation loop between a winter load side terminal heat exchanger and the heat pump unit, and high temperature water flows into the terminal heat exchanger from the condenser to supply heat to ground buildings; cooling water in the condenser exchanges heat with high temperature and high pressure refrigerant gas, and then is delivered to the auxiliary cold source through a circulation loop between a summer auxiliary cold source and the heat pump unit for cooling, the cooling water in the condenser is delivered to the evaporator through a throttling valve, and chilled water in the evaporator is cooled and then delivered to the terminal heat exchanger through a circulation loop between a summer load side terminal heat exchanger and the heat pump unit to supply cold to the ground buildings.