武汉地区太阳能-热源塔热泵复合空调系统研究

Research on composite air-conditioning system of solar energy and heat source tower heat pump in Wuhan

结合武汉地区某拟建项目,运用一套适用于夏热冬冷地区的太阳能-热源塔热泵复合空调系统为该项目提供冷/热源,将TRNSYS软件模拟与工程实测相结合,对全年4种典型工况下高空气干球温度、太阳辐照量等对系统性能的影响进行研究。结果表明:该系统在制冷工况和太阳能单独制热工况下满足工程要求;在热源塔热泵机组单独制热工况下能够满足要求,但综合制热系数偏低;在热泵机组和蓄热水箱复合制热工况下,当蓄热水箱水温高于12℃时系统制热系数稳定在3.6左右。

Combined with a proposed project in Wuhan,an composite air-conditioning system of solar energy and heat source tower heat pump which is suitable for hot summer and cold winter area is used to provide cold/heat source.Combined with TRNSYS simulation and engineering measurement,the effects of high air dry bulb temperatures and solar radiation capacity on system performance are analyzed under four types of typical operating conditions throughout the year.The results show that the system can meet the engineering requirements under the refrigeration and the solar energy heating condition.Under the heating condition of the heat source tower heat pump,it can also meet the requirements,while the comprehensive heating coefficient is low.Under the composite heating condition with heat pump unit and heat storage tank,the heating coefficient can be stable at around 3.6 when the water temperature in the tank is above 12℃.