摘要
从理论角度对相变储热式热泵热水器的节能效益进行分析。相变储热式热泵热水器将相变储能技术与热泵技术相结合,减小压缩机的功率消耗,结果表明由于分段加热及逆向换热方式,与常规热泵热水器相比,降低了加热过程中的传热温差及系统的平均冷凝压力,提高了系统的能效比,且储热阶段储热时间对系统能效比也有一定影响,储热式热泵热水器的研究为该项技术的推广应用奠定了良好基础。
Energy conservation efficiency of PCM heat-pump water heater was analysed theoretically. PCM heat-pump water heater combines energy conservation and high efficient heat pump with phase change technology. It makes power consumption and dimension of compression engine diminished. Comparing with traditional heat pump water heater, heat transfer difference in temperature is reduced, average condensation pressure of the new system is lower than that of traditional system and energy effect ration is improved, because of the existence of preheat stage, heating by stages and heat transfer of counter current. And preheat time has effect on the energy effect ration. This study establishes the basis for the widely use of this kind of water heater.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2009年第1期51-54,共4页
Acta Energiae Solaris Sinica
基金
院启动基金
关键词
相变材料
热水器
热泵
储热
预热
phase changing material （PCM）
heat pump
water heater
heat store
preheating
