| 摘要: |
| 在不同的环境工况下对使用电子膨胀阀的热泵热水器系统动态性能进行了实验研究,测量了电子膨胀阀不同开度条件下热泵热水器的动态制热量、性能系数等参数,分析了电子膨胀阀开度对热泵热水器性能的影响。同时,对热泵热水器系统动态性能进行了数值模拟,并将模拟结果与实验结果进行了比较。结果表明:在电子膨胀阀某一开度下,系统性能系数存在一个最大值;对于电子膨胀阀不同开度,在加热初始阶段,电子膨胀阀开度较大时系统COP和制热量较高,而在加热后期则恰恰相反。通过在不同加热时段使用电子膨胀阀不同开度实验发现,系统性能得到显著提高,最大可提高7.6%。热泵系统性能数值模拟与实验结果的变化趋势一致,说明数学模型和计算方法是可行的。 |
| 关键词: 热工学 热泵热水器 电子膨胀阀 动态性能 实验研究 |
| DOI：10.3969/j.issn.0253-4339.年份（4位数字）.月份（2位数字）.文章的起始页码（3位数字） |
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| 基金项目:天津市应用基础研究计划(06YFJMJC05500)资助~~ |
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| Numerical Simulation and Experimental Study on the Dynamic Performance of Heat Pump Water Heater with Electronic Expansion Valve |
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Li Weiguo Guo Xianmin Sun Tao
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| (Li Weiguo Guo Xianmin Sun Tao(Tianjin Key Laboratory of Refrigeration Technology,Tianjin University of Commerce,Tianjin,300134,China)) |
| Abstract: |
| A series of experiments on the dynamic performance of the heat pump water heater(HPWH) unit with electronic expansion valve(EEV) under different environmental conditions were conducted.The dynamic heating capacity and coefficient of performance(COP) of the HPWH unit under different EEV openings were measured.The effects of the EEV opening on the performance of the HPWH unit were analyzed.Meanwhile,the dynamic performance of the HPWH with EEV was simulated and the results were compared with the experimental ... |
| Key words: Pyrology Heat pump water heater Electronic expansion valve Dynamic performance Experimental investigation |
