蓄能型热泵机组供热水运行特性

Performance of energy-storage air source heat pump in hot water supply mode

为了解蓄能型空气源热泵机组供热水运行特性,通过实验研究蓄能型空气源热泵机组在不同工况下的性能.结果表明:该机组在不同工况下供应热水时均运行较好,当供热水流量较小时,运行能效较高;当热水循环流量较大时,对蓄热罐内扰动较强,会导致热水供应中断现象的发生,且中断时间随室外温度降低而延长;此外,室外环境温度对机组能效影响较大,室外温度越低,机组供热能力和平均能效比(REE)会越小.

To discuss the operating characteristics of a new kind of energy-storage air source heat pump when supplying hot water,the unit＇s performance in different conditions was studied by experiments.The results show that the unit can operate efficiently and stably,and the unit＇s mean R EE reduces with the increase of hot water supply flux.There also exists a break of hot water supply because the high flow rate of circulation water causes intensive disturbance in the heat storage tank,and the time of break is prolonged with the decrease of outdoor temperature.Moreover,the heat supple ability and mean R EE of the unit reduces with the decrease of outdoor temperature.