【作者】 李郁武； 王如竹； 王泰华； 吴静怡； 许煜雄；

【Author】 LI Yuwu, WANG Ruzhu, WANG Taihua, WU Jingyi, XU Yuxiong (Engineering Research Center of Solar Pozver & Refrigeration, MOE; Institute of Refrigeration and Cryogenics , Shanghai Jiao Tang University , Shanghai 200240, China)

【机构】 上海交通大学制冷与低温工程研究所,教育部太阳能发电及制冷工程研究中心；

【摘要】 针对自行研制的直膨式太阳能热泵热水器实验样机进行了春季运行工况下的实验研究,根据实验数据确定系统热力循环有关参数,计算出系统各主要部件的局部有效能损失及有效能损失系数,对各部件可加以完善的潜力做了量化分析。可以为各部件及整套系统热力性能的改善提供参考。通过分析还发现,根据工况的变化进行制冷剂流量的在线调节,可以进一步减少有效能损失和提高系统的热力性能。更多还原

【Abstract】 The direct expansion solar assisted heat pump water heater (DX-SAHPWH) was constructed, tested and analyzed. Through experimental research on the system performance in spring and thermodynamics analysis (first-law and second-law), some methods were suggested to improve the performance of each main component. Furthermore, in order to maintain higher system performance under widely varying ambient conditions, the online control of the variation of the refrigerant flow is necessary for the DX-SAHPWH.更多还原