热泵热水系统设计选型的探讨及优化

Discussion and optimization of heat pump domestic hot water system design

以某住宅小区为例,利用TRNSYS软件对热泵热水系统进行模拟,结果显示,由于冷热水混合作用的影响,按现有规范及图集上的方法计算所选的热水热泵制热量及热水罐容量无法满足设计小时耗热量持续时间内的生活热水需求。可通过增加热水罐容积、增大热泵制热量、冷水预热等方法来提高热泵热水系统的供生活热水能力。

Taking one residential district as an example,the heat pump domestic hot water system with TRNSYS was simulated.The results showed the hot water heat pump heat output and hot water tank volume designed and selected according current standards and maps cannot meet the designed heat consumption duration.This paper proposes increasing hot water tank volume and heat pump output,preheating cool water to improve system ability of providing domestic hot water.