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将基于平板微热管阵列技术的新型水冷光伏光热(Photoveltaic-thermal,PV/T)系统与双热源热泵相结合,提出1种新型太阳能光伏—热泵复合建筑供能系统。本文介绍了该复合建筑供能系统的组成、工作原理、运行模式及实验台的设计,并对PV/T系统与双热源热泵联合运行模式进行了实验研究与性能分析。PV/T系统峰值功率为1 170 W,压缩机功率为1HP的系统,在室外环境平均气温为4.0℃,平均辐照度684 W/m2条件下,热泵平均制热COP为2.7,平均发电功率为620.5W,平均发电效率为11.7%,全天(9:00~15:00)发电量为4.39 k Wh,平均集热效率为22.3%,光伏光热综合效率为34.1%。实验结果表明该系统能充分利用太阳能和热泵各自优势,通过能源互补,提高系统综合利用效率,满足建筑所需的多种用能需求,在推广可再生能源利用和建筑节能方面具有重要意义。
A new solar photovoltaic-heat pump composite building energy supply system is proposed based on the combination of the new Photovoltaics (PV / T) system and the dual heat source heat pump based on the planar micro heat pipe array technology. This paper introduces the composition, working principle, operation mode and experimental bench design of the energy supply system of the composite building, and conducts experimental research and performance analysis on the combined operation mode of PV / T system and double heat source heat pump. The average heating power of the PV / T system is 1 170 W and the compressor power is 1HP. Under the conditions of an average outdoor temperature of 4.0 ℃ and an average irradiance of 684 W / m2, the average heating COP of the heat pump is 2.7 and the average power The average power generation efficiency was 11.7%, the power generation was 4.39 k Wh at 9: 00-15: 00, the average heat collection efficiency was 22.3%, and the comprehensive solar thermal efficiency was 34.1%. The experimental results show that the system can make full use of the respective advantages of solar energy and heat pump. Through the complementation of energy sources, the system can improve the efficiency of system utilization and meet the needs of various energy demands of buildings, which is of great significance in popularizing renewable energy utilization and building energy conservation.