技术中心

【摘要】 以太阳能的光伏、光热转化技术应用为背景,提出一种新型的冷/热-电联供热泵系统模式。该模式使用光伏光热模块作为热泵系统蒸发器,通过预制技术与建筑屋顶一体化。通过建立物理和数学模型,对模块的结构、热泵系统的设计参数对太阳能转化效率的影响进行了数值分析与计算。计算结果表明上海地区系统冬季日平均太阳能综合转换率达71.7%;蒸发温度增加,转换效率降低;冷凝温度增加,光伏转化效率降低,光热转化效率增加,综合效率保持不变,其中010℃的蒸发温度和5070℃的冷凝温度是较理想的设计温度点;透明的硼硅酸材料能有效减少热损失,是表面覆盖材料理想的选择;单晶硅产电能力强,可迅速提高光伏转化效率。 【Abstract】 A novel PV/e roof module has been recently proposed to act as the roof component by the prefabrication technique,electricity generator and the evaporator of a heat pump system.The modules,in conjunction with a heat pump,are able to provide heat and power supply to building with an enhanced efficiency resulting in a saving of construction space and initial investment.The results conclude that the average attained solar efficiency is about 71.7% under the winter condition of Shanghai,China.The ideal evaporation(010℃) and condensation(5070℃) temperatures are respectively recommended.Borosilicate cover performs better than other two glazed materials and mono-crystalline photovoltaic cell is able to generate better electricity output. 【关键词】 太阳能; 冷/热电联供; 热泵; 光伏光热 【Key words】 solar energy; cooling/heating-power supply; heat pump; PV/e