摘要: |
本文通过设置环境温度分别为-12 ℃、-6 ℃,初始水温为20 ℃,开启热泵进行加热,研究了不同供水温度对空气源热泵的制热量、系统功耗、能效、排气温度、压缩比等方面的影响。研究结果表明:在相同的初始水温下,随着加热的进行,压缩机的制热量先增加后降低,供水温度为40 ℃时的制热量最大;当环境温度为-12 ℃,供水温度从25 ℃增至55 ℃时,系统功耗从11 905 W增至24 417 W,增加105%,系统能效从4.03降至2.11,下降47.6%。 |
关键词: 低温空气源热泵 供水温度 制热量 制热能效 |
DOI: |
投稿时间:2018-05-11 修订日期:2018-06-19
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基金项目:国家自然科学基金(51476149)资助项目。 |
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Effect of Water Supply Temperature on the Performance of Low Temperature Air Source Heat Pump System |
Wu Xuehong1, Xu Shuai1, Gui Xulong1, He Yongning1, Gou Qiuping2
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(1.School of Energy and Power Engineering, Zhengzhou University of Light Industry;2.Zhengzhou Onaer Cold and Warm Technology Co., Ltd.) |
Abstract: |
In this paper, the effect of the water supply temperature on the thermal performance of a heat pump is analyzed. The influence of the water supply temperature on the performance of a heat pump system is investigated for an ambient temperature ?12 °C and ?6 °C and an initial water supply temperature of 20 ℃. The experimental results indicate that, under the same initial temperature, the heating capacity of the compressor system first increased and then decreased, with a maximum heating capacity reached for a water supply temperature of 40 ℃. When the ambient temperature was at ?12 ℃, the water was heated by the heat pump from 25 ℃ to 55 ℃. The power consumption of the system increased from 11,905 W to 24,417 W, an increase of 105%, and the system energy efficiency decreased from 4.03 to 2.11, a decrease of 47.6%. |
Key words: low temperature air source heat pump water supply temperature heating capacity COP |