STUDY ON AIR SOURCE HEAT PUPM WATER HEATER WITH PHASE CHANGE MATERIAL FOR THERMAL STORAGE
An air source heat pump water heater with phase change material (PCM) for thermal storage has been designed to take advantage of off-peak electrical energy. The heat transfer model of PCM was based upon a pure conduction formulation. Quasi-steady state method was used to calculate the temperature distribution and phase front location of PCM during thermal storage process. And temperature & thermal resistance iteration approach has been developed for the analysis of temperature variation of heat transfer fluid (HTF) and phase front location of PCM during thermal release process. To test the physical validity of the calculational results, experimental studies about storing heat and releasing heat of PCM were carried out. Comparison between the calculational results and the experimental data shows good agreement. Graphical results including system pressure and input power of heat pump, time-wise variation of stored and released thermal energy of PCM were presented and discussed.
J.Y.LONG D.S.ZHU
Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education,Academy of chemistry and energy, South China University of Technology,Guangzhou Guangdong 510640, China
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）