| 袁朝阳， 陶乐仁， 虞中旸， 谷志攀.水流量对热泵热水器性能影响的实验研究[J].轻工机械,2018,36(2):73-76 |
| 水流量对热泵热水器性能影响的实验研究 |
| Experimental Research and Analysis of Effect of Water Flow on Performance of Heat Pump Water Heater |
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| DOI：10.3969/j.issn.1005 2895.2018.02.014 |
| 中文关键词: 空气源热泵热水器 变制冷剂流量 水流量 能效比 |
| 英文关键词:air source heat pump water heater variable refrigerant flow rate system water flow rate COP（coefficient of performance） |
| 基金项目:上海动力工程多相流动与传热重点实验室(13DZ2260900)；2015年住房和城乡建设部科学技术计划项目(2015 K7 026)；2016
嘉兴市科技计划项目(2016AY13019)。 |
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| 中文摘要: |
| 针对空气源热泵热水器运行工况多变，制热效率不稳定的特点，设计了循环加热式热泵热水器实验装置，系统由制冷剂循
环和水循环两部分构成，重点研究了水流量对系统性能的影响。实验结果表明：逐时能效比随水温的升高而下降，加热前期水流量越大能效比越低，加热后期刚
好相反；水流量越小系统越容易吸气带液，吸气带液会使制热量降低，能效比下降速率增大，导致系统性能变差；吸气带液时，制冷剂流量减小，换热系数增大
，与换热系数相比制冷剂流量对制热量的影响更大。该结果为系统实际运行和进一步研究提供参考。 |
| 英文摘要: |
| In view of the changeable operating conditions and unstable heat efficiency of air source heat pump water heater, a circulating heat pump water heater
experiment device composed of refrigerant circulation and water cycle was utilized to study the effect of water flow rate on system performance. The results show that COP decreases with
the increase of water temperature. In the early stage of heating, higher the water flow, lower the COP, but the latter period was opposite. The system with small water flow rate is easy to
cause liquid refrigerant sucked in，which lead to the heat decrease, the descent rate of COP rise and the worse performance of the system. When compressor suck with few liquid, the
refrigerant flow rate decreases and the heat transfer coefficient increases. Compared with the heat transfer coefficient, the refrigerant flow rate has more effect on the heat generation. The
results provide reference for the practical operation and further study of the system. |
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