【摘要】 提出了一种以空气能和太阳能为热源的热泵.在蒸发器内设置制冷剂盘管和水盘管,水盘管内通较低品位的太阳能热水,将太阳能热水作为热泵的一种热源.在较炎热的气候条件下,对一体化热泵蒸发器的能效进行了实验研究.结果表明:蒸发器通太阳能热水可以显著提高热泵COP,实验测得的热泵COP值比单独空气源时提升7.1%.蒸发器热水放热量随蒸发器的水流量增大而增大,空气放热量随水流量增大而减小,适当增大蒸发器水流量,热泵可以获得较大的太阳能利用率和较高的热泵COP.冷凝器水温变化对蒸发器热水放热量影响不大,但对蒸发器的空气放热量和热泵COP影响较大,适当降低冷凝器水温,在确保太阳能热水利用率的同时,更有利于充分利用空气能和提高热泵COP值.更多还原

【Abstract】 This study proposes an integrated heat pump evaporator using solar energy and air energy as heat sources.Refrigerant coil and water coil were set in the evaporator in a certain manner.The water coil was supplied for low quality solar hot water as a heat source for heat pump.The energy efficiency of the integrated heat pump evaporator was experimentally studied under the hot climate.The results show that the COP of the heat pump can be significantly improved by supplying solar hot water to the evaporator,the measured COP value of the integrated heat pump was 7.1% higher than that of the air source heat pump.In the evaporator,the heat released by solar hot water increased with the increase of the evaporator water flow rate,while the heat released by air decreased with the increase of the evaporator water flow rate.The heat pump can obtain greater solar energy utilization and higher heat pump COP by properly increasing the evaporator water flow rate.The change of water temperature of the condenser has little effect on the heat released by solar hot water,but it has a greater influence on the heat released by the air and the value of COP.Properly decreasing the water temperature of the condenser will ensure the utilization rate of solar hot water,and at the same time,it will be more conducive to making full use of air energy and improving COP value of the heat pump.更多还原