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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0~10℃的蒸发温度和50~70℃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。
Taking the application of solar photovoltaic and photothermal conversion technology as a background, a new type of heat / electric heat pump system mode is proposed. The model uses a photovoltaic module as a heat pump evaporator, prefabricated with the roof of the building. Through the establishment of physical and mathematical models, the numerical analysis and calculation of the module structure, the design parameters of the heat pump system on solar energy conversion efficiency are carried out. The results show that the average solar energy conversion rate is 71.7% in winter in Shanghai. The evaporation temperature increases and the conversion efficiency decreases. The condensation temperature increases, the photovoltaic conversion efficiency decreases, the photothermal conversion efficiency increases, and the overall efficiency remains unchanged. ℃ evaporation temperature and 50 ~ 70 ℃ condensation temperature is the ideal design point of temperature; transparent borosilicate material can effectively reduce heat loss, is the ideal choice of surface coating material; monocrystalline silicon power generation capability can be quickly Improve photovoltaic conversion efficiency.