Flat plate natural circulation solar energy medium and high temperature heat collection device based on Fresnel condensation
A medium-high temperature heat collection and natural circulation technology, applied in solar thermal devices, solar collectors, solar collectors using working fluids, etc., can solve the problems of inability to achieve building integration, heavy trough systems, and high investment costs problem, achieve the effect of reducing power components, reducing cost and improving heat exchange effect
Inactive Publication Date: 2015-06-17
ZHEJIANG UNIV
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Problems solved by technology
However, because the trough system is relatively bulky and has a large wind load, it cannot be integrated with the building, and the investment cost is relatively high
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[0017] Such as Figure 1-Figure 5 As shown, the high-temperature heat collection device based on Fresnel concentrating flat plate natural circulation solar energy includes a steam heat exchanger 1, a first vacuum pumping valve 4, a rising steam main pipe 5, a steam branch pipe 6, a steam shut-off valve 7, The second vacuum pumping valve 8, the Fresnel secondary reflection plate concentrator 11, the first condensed water stop valve 15, the condensed water branch pipe 16, the condenser bracket 19, the third vacuum pumping valve 20, the first 2. Condensed water stop valve 21, steam heat exchanger bracket 22, main condensed water pipe 23; Fresnel secondary reflective plate concentrator 11 includes secondary reflector 9, Fresnel reflector 10, heat collecting pipe 12, insulation layer 13. Concentrator outer frame 14, base condensate pipe hole 17, concentrator base 18, outer frame glass 28, support baffle 29, mirror rotation shaft 33, support baffle 29 includes removable movable part...
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The invention discloses a flat plate natural circulation solar energy medium and high temperature heat collection device based on Fresnel condensation. The flat plate natural circulation solar energy medium and high temperature heat collection device comprises a steam heat exchanger, a first vacuum extraction valve, a rising steam main pipe, a steam branch pipe, a steam stop valve, a second vacuum extraction valve, a Fresnel secondary reflection flat plate condenser, a first condensate water stop valve, a condensate water branch pipe, a condenser support, a third vacuum extraction valve, a second condensate water stop valve, a steam heat exchanger support and a main condensate pipe. According to the flat plate natural circulation solar energy medium and high temperature heat collection device, the characteristics of a flat plate solar water heater are combined with the characteristics of Fresnel high condensation, the requirement for simultaneously generating medium and high temperature steam through high condensation and enabling the generated medium and high temperature steam to adapt to buildings is met, and the flat plate natural circulation solar energy medium and high temperature heat collection device is particularly suitable for areas where economy is developed and the demand for high-temperature steam is large while land resource cost is high. The heat pipe technology is introduced, the heat exchange effect of the system is improved, power parts of forced circulation systems such as high temperature pumps are reduced, the cost of the system is reduced, and stability of the system is improved.
Description
technical field [0001] The invention relates to solar heat utilization technology, in particular to a Fresnel concentrating flat plate natural circulation solar medium-high temperature heat collection device. Background technique [0002] As my country's environmental protection issues become increasingly prominent, the development of clean and sustainable energy technologies has become a major strategic measure for my country's current energy development. Photothermal solar technology, as one of the core contents of the sustainable energy development strategy, is clearly mentioned in the relevant national planning. Flat-panel solar water heating technology has been successfully commercialized and has formed a 100-billion-level industrial chain around the world. However, due to technical limitations, the maximum temperature generated by traditional flat-panel solar hot water technology can only reach about 120°C, which cannot meet the demand for medium and high temperature ...
Claims
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IPC IPC(8): F22B1/00F24J2/14F24J2/12F24J2/32F24J2/24F24J2/46F24S10/70F24S10/95F24S23/71F24S23/74
CPCY02E10/44
Inventor 张良华蒙余超胡榕榕李丕强张晓鹏王雪范利武俞自涛胡亚才
Owner ZHEJIANG UNIV