为提高热泵热水循环的效率,构建基于光伏/光热一体化（PV/T）的双源热泵热水系统,选取全年中4个典型日,测试系统的可靠性、热泵运行性能以及PV/T运行特性。结果表明：系统的电源和热源可稳定使用;4个典型工况中,环境温度为27.3 ℃、太阳辐照度为975.6 W/m2时热泵运行性能最优,制热系数（COPh）达到6.2,PV/T性能最优,平均光电转换效率相对于传统光伏组件高6.6%,总发电量比传统光伏组件高0.11 kWh。
Abstract
To improve the efficiency of heat pump hot water system yearly round, this study conducts the experimental tests of a dual source heat pump hot water system based on photovoltaic/photothermal （PV/T）, including the performance of system reliability, heat pump and PV/T operation performance under four typical days over the year. The main results are listed as follows： First, the power and hot water supply of the system can be used stably over the selected conditions. Besides, among the four working conditions, the maximum heating coefficient of performance （COPh） reaches 6.2 with the ambient temperature of 27.3 ℃ and the solar irradiance of 975.6 W/m2. Finally, the PV/T also shows more efficiency than the conventional PV, and the average photoelectric conversion efficiency is 6.6% higher than that of conventional PV. The total power generation is also 0.11 kWh higher than that of conventional PV under selected condition.
关键词
太阳能 /
光伏光热一体化 /
空气源热泵 /
热电联供
Key words
solar energy /
PV/T /
air source heat pumps /
cogeneration
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基金
国家自然科学基金委青年项目（52206005）
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