套管长度对直热式热泵热水器性能的影响

摘要

The performance of the instantaneous air-source heat pump water heater was studied,and the influence of double-pipe length on heat pump water heater performance was analyzed in this paper. The experimental results show that:double-pipe length has a certain impact on the system performance,such as heating capacity,energy efficiency ratio and other properties which this effect is increased with the double-pipe length deviation from the normal range;The energy efficiency of heat pump water heater is improved by the appropriate design of double-pipe length,in addition,the heat capacity can be increased,and power consumption can be reduced.%本文对直热式空气源热泵热水器的性能进行试验研究，分析了套管长度对热泵热水器性能的影响。实验结果表明：套管长度对制热量、能效比等性能有一定的影响；设计适当的套管长度，不但可以适当提高热泵热水器的能效比，而且增加了制热量，降低了耗电量。