改善三套管蓄能型热泵系统供热性能的实验

为改善室外低温条件下空气源热泵的供热性能，提出了三套管蓄能器供热模式.实验比较了三套管蓄能器单独供热、联合空气源热泵供热以及太阳能辅助三套管蓄能器供热的运行稳定性及制热COP等供热特性.实验结果表明，太阳能辅助三套管蓄能器供热模式可有效改善三套管蓄能器的供热性能，在太阳能热水温度为28 ℃，热水流量为300 L/h的工况，机组蒸发温度为-2.8 ℃，制热COP为2.8，有效缓解了空气源热泵在低温环境中的供热不足.
To enhance the heating performance of the air source heat pump (ASHP) system in the low ambient temperature surroundings, the triple-sleeve energy exchanger (TRESE) for space heating mode was proposed. The running stability and the coefficient of performance (COP) of the energy storage heat pump system (ESHP) in the TRESE heating mode, the TRESE combined ASHP system heating mode, and the solar hot water assisting TRESE heating mode, were compared and discussed.The results demonstrate the substantial advance in the heating performance of the ESHP system in the TRESE heating mode and the ASHP system heating mode. For instance, when the temperature and volume flow of the solar hot water are 28 ℃ and 300 L/h, respectively, the evaporating temperature and COP achieves -2.8 ℃ and 2.8 respectively.