Light condensation-light split photovoltaic/photothermal integration system based on absorption heat pump
An absorption heat pump and photovoltaic technology, which is applied in the field of concentrating-splitting photovoltaic/photothermal integrated systems, can solve the problems of high optical loss and no significant improvement in photoelectric conversion efficiency, and achieves solutions such as intermittent, lower temperature, lower temperature, etc. Effect of heat load
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Embodiment 1
[0024] see figure 1 , the system mainly includes a dish-type concentrating and splitting unit, a solar energy quality improvement unit and a heating unit. The sunlight converges to the beam splitter 2 through the dish-type concentrating device 1, and part of the solar light-transmitting beam splitter capable of high-efficiency photovoltaic conversion enters the uniform tube 3, and after uniform light treatment, it converges to the surface of the battery 4 and is absorbed by the battery 4. For power generation, the heat generated by the battery 4 is taken away by the cooling water in the cooling back plate 5 . At the beam splitter 2, sunlight that is not conducive to efficient photovoltaic conversion is reflected to the heat collector 6, and the cooling water from the generator 9 completes the recovery of solar waste heat. The heat of the cooling back plate 5 on the upper part of the battery 4 is absorbed by the cooling water from the evaporator 7, and the heat-absorbed water ...
Embodiment 2
[0029] Such as figure 1As shown, in the concentrating-splitting photovoltaic / photothermal integrated system based on the absorption heat pump, its operation is the same as that of Embodiment 1, wherein the sunlight passes through the beam splitter 2 to realize the anti-reflection and other functions of the sensitive wavelength band of the photovoltaic cell. Since the reflected visible light is not limited by the operating temperature of the battery 4 due to the increase and reflection of the wave band, it can reach a higher heat collection temperature of about 120°C.
Embodiment 3
[0031] Such as figure 1 As shown, in the concentrating-splitting photovoltaic / solar-thermal integrated system based on the absorption heat pump, its operation is the same as that of Example 1, wherein the absorption heat pump uses the high-temperature heat source and cooling of about 120°C from the solar collector. The low-temperature heat source of about 60°C sent by the back plate 5 forms a large number of medium-temperature heat sources of about 100°C for heating users 17, effectively improving the comprehensive utilization efficiency of solar energy.
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