介绍了一种带有相变蓄热装置的直膨式太阳能热泵系统。以青岛天气为例,对该系统的蓄热模式进行数值模拟,得出蓄热装置进出口制冷剂的温度、蓄热材料的液相率随时间的变化,结果表明在太阳能辐射量变化时,该系统的蒸发温度维持25℃左右,系统能够稳定运行;对系统热力学性质进行理论计算得出系统在冷凝温度为70℃时,系统的COP能维持在5.3左右,系统能够高效运行。
A direct expanding solar heat pump system with heat storage was carried out,heat storage mode of which was numerically simulated in the heat storage device obtaining variation of refrigerant temperature in import and export and liquid fraction of heat storage materials with time. The result show that evaporation temperature of the system was maintained around 25℃when solar radiation changed.By means of calculating the thermodynamic properties theoretically the coefficient of performance of is about 3.5 when the condensation temperature is 70℃,in summary,the system has the advantage of steady and high efficiency.
参考文献
| [1] | 王刚,喻李葵,陈建隆.相变蓄热装置在太阳能热泵系统中的应用[J].建筑热能通风空调,2008(05):47-49. |
| [2] | 房岩松,盛立芳,邱明燕.济南、福山太阳辐射的气候学特征分析[J].山东气象,2004(04):5-8. |
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