空气源热泵热水器冬季性能实验研究

The Performance Experiment of Air-source Heat Pump Water Heater Working in Winter

空气源热泵热水器是一种新型的热水器,具有安全、节能、环保等特点,但是它也存在着许多缺点:受环境温度影响较大,尤其是在冬季环境温度很低的北方,系统效率不是很高,表现不够稳定,针对这些情况,本文对其冬季性能作了研究,分别在环境温度为0℃、-5℃、-20℃,三种工况下做了开机时间与水温的变化、开机时间与系统COP的变化,和融霜等实验,通过实验找到了影响空气源热泵热水器冬季性能的因素,为其系统优化和空气侧换热器的除霜提供了依据。

Air-source heat pump water heater is a novel product and has many advantages, for example, safety, energy conservation, environmental protection, however, the COP is low when it works in winter especially in north China and the performance is not stable. In this paper, the experiment device of the air- source heat pump water heater was present and the relationships between time and water temperature, time and COP and defrosting under three different ambient temperature were obtained, based on the experiments optimization of the system and the defrosting of the evaporator were found.