Flat-panel solar photovoltaic water-heating air-heating compound heat collector
A solar photovoltaic and collector technology, which is applied to solar thermal power generation, solar thermal devices, heating devices, etc., can solve the problems of low utilization rate in winter, prone to freezing, increased metal consumption, etc. Conversion efficiency, small influence of flow channel resistance, and effect of reducing metal consumption
Inactive Publication Date: 2013-04-24
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology
[0003] Solar air collectors are mainly used for building heating in winter, and solar energy cannot be effectively utilized at other times of the year
Solar hot water collectors are mainly used for hot water production in spring, summer and autumn, and the utilization rate is not high in winter, and it is prone to freezing
Therefore, neither the single hot water PV / T module nor the air PV / T module can realize the effective utilization of solar energy throughout the year, and it is necessary to carry out structural transformation
Existing dual-function collectors can provide hot water and room heating needs, but still require external power supply in active circulation to drive water pumps or fans
At the same time, the existing solar air collectors mainly increase the heat exchange between the air in the flow channel and the heat-absorbing plate by adding spoilers or heat-exchanging fins, but the setting of spoilers or fins will increase wind resistance and The energy consumption of the fan also increases the metal consumption and increases the manufacturing cost of the collector
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[0017] The present invention will be further described through the embodiments below in conjunction with the accompanying drawings.
[0018] see figure 1 , The flat-plate solar photovoltaic hot water hot air composite heat collector includes a collector box composed of four frame plates 11 and a bottom plate 12, and the inner surfaces of the four frame plates 11 and the bottom plate 12 are all provided with insulation material layers 10. Copper tubes 5 are evenly distributed along the length of the collector box, one end of the copper tubes 5 is connected to the water inlet pipe 6, and the other end is connected to the water outlet pipe 7, and the water inlet of the water inlet pipe 6 extends to the length of the collector box. The water outlet of the water outlet pipe 7 extends to the outside of the other side wall in the length direction of the collector box; the top of the collector box is equipped with a glass cover plate 1 . see figure 2 A heat absorbing plate 2 is ins...
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The invention relates to a flat-panel solar photovoltaic water-heating air-heating compound heat collector which comprises a box, evenly distributed copper tubes, an inlet tube, an outlet tube and a glass cover plate. A heat absorption plate is disposed in a cavity between the glass cover plate and the copper tubes. The copper tubes contact with the heat absorption plate. An air interlayer is formed between the glass cover plate and the heat absorption plate. Photovoltaic cells are evenly disposed on the top surface of the heat absorption plate, adjacent to the glass cover plate. The bottom surface of the heat absorption plate is evenly provided with micro flow stoppers. Two widthwise walls of the box below the bottom surface of the heat absorption plate are provided with an air inlet and an air outlet respectively. A through air channel is formed in the box below the bottom surface of the heat absorption plate. The flat-panel solar photovoltaic water-heating air-heating compound heat collector allows for frequency-by-frequency utilization of solar energy to generate electric energy and heat energy simultaneously, so that utilization rate of solar energy is increased greatly. The water-heating or air-heating modes can be selected according to season and environment requirements, yearly full utilization of light and heat is achieved, the temperature of a photovoltaic plate is lowered, and photoelectric conversion rate is increased.
Description
technical field [0001] The invention belongs to the technical field of solar photovoltaic photothermal comprehensive utilization, and in particular relates to a flat-plate solar photovoltaic photothermal composite heat collector. Background technique [0002] Solar photovoltaic utilization and photothermal utilization are two important aspects of solar energy utilization. At present, the photoelectric conversion efficiency of solar photovoltaic modules is still low, and the temperature rise after the battery absorbs solar radiation will also lead to a decrease in photoelectric conversion efficiency. When the battery temperature rises by 1 °C, its photoelectric conversion efficiency will drop by 3 to 5‰. In recent years, solar photovoltaic / thermal integrated utilization (PV / T) systems have attracted widespread attention due to their good comprehensive utilization efficiency of solar energy. On the one hand, the PV / T system improves the comprehensive utilization efficiency of...
Claims
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IPC IPC(8): F24J2/04
CPCY02E10/44
Inventor 季杰郭超孙炜马进伟
Owner UNIV OF SCI & TECH OF CHINA
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