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Solar gas heat-absorbing device and working method thereof

A technology of a heat absorbing device and a working method, which is applied in the field of solar power generation, can solve problems such as poor heat transfer effect, uneven high-intensity radiation, and heat-absorbing temperature changes of solar tube heat absorbers, so as to improve work efficiency and heat-absorbing temperature , high energy storage density, and the effect of reducing the heat transfer temperature difference

Pending Publication Date: 2020-08-21
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In view of the above status quo, the present invention proposes a new solar gas heat absorption method and device with protection and heat storage functions, which solves the problem of poor heat transfer effect of solar tube heat absorbers and uneven high-intensity radiation causing heat absorption tubes to explode. , The problem that the heat absorption temperature changes significantly with the change of solar radiation intensity improves the stability of the operation of the solar gas heat absorber

Method used

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  • Solar gas heat-absorbing device and working method thereof
  • Solar gas heat-absorbing device and working method thereof

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Embodiment 1

[0043] Such as figure 1 As shown, the present invention provides a solar gas heat absorbing device, wherein the solar gas heat absorbing device, that is, the heat absorber, includes a columnar heat absorbing cavity 12 , and a lighting hole 11 is provided at the end of the heat absorbing cavity 12 . In the heat absorption chamber 12, the heat absorber inlet 6 runs through the inner side wall of the heat absorption chamber 12 and is arranged away from the lighting hole 11, and the heat absorber outlet 7 runs through the inner side wall of the heat absorption chamber 12 and is isolated from the heat absorber inlet 6. set up. In addition, a porous medium 4 is also provided in the heat absorption cavity 12 . A plurality of heat-absorbing sleeves 10 are evenly arranged in the heat-absorbing cavity 12, and the outer wall of the heat-absorbing sleeve 10 is wrapped by the porous medium 4, and the end of the heat-absorbing sleeve 10 near the daylighting hole 11 is exposed to the outsid...

Embodiment 2

[0073] Such as figure 2 As shown, in this embodiment, the structure of the solar gas heat absorber is basically the same as that in Embodiment 1, the only difference is that the porous medium in this embodiment does not fill the space between adjacent heat absorbing sleeves 10 And between the heat-absorbing sleeve 10 and the side wall of the heat-absorbing cavity 12, only the surface of the heat-absorbing sleeve 10 is coated with a porous medium, that is, the porous medium is partially coated on the outer wall of the heat-absorbing sleeve 10 (so that the end of the heat-absorbing sleeve 10 near the lighting hole 11 is exposed). And the working method of the solar gas heat absorber in the present embodiment is as follows:

[0074] continue as figure 2 As shown, a new type of solar gas heat absorbing device with protection and heat storage functions, including secondary reflection device 1, thermal insulation material 2, fins 3, porous medium 4, air extraction outlet 5, heat...

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Abstract

The invention relates to the technical field of solar power generation, in particular to a solar gas heat-absorbing device and aworking method thereof. Thesolar gas heat-absorbing devicecomprises a columnar heat-absorbing cavity, and a day-lighting hole is formed in the end of the heat-absorbing cavity; multi-hole media are further arranged in the heat-absorbing cavity; a plurality of evenly-distributed heat-absorbing sleeves are arranged in the heat-absorbing cavity, the outer walls of the heat-absorbing sleeves are wrapped with the multi-hole media, and the ends, close to the day-lighting hole, of theheat-absorbing sleevesare exposed out of the multi-hole media; and theheat-absorbing sleeves communicate with a heat absorber inlet and a heat absorber outlet, and fins are arranged in the heat-absorbing sleeves. According to the solar gas heat-absorbing device and theworking method thereof, the heat-absorbing sleeves adopt jet impingement and are provided with the fins, the heat-exchanging effect of gas in heat-absorbing pipes is improved, the wall temperature of the heat-absorbing pipes and the heat-exchanging temperature difference of the gas are reduced, the efficiency of a heatabsorber is improved, and the heat-absorbing temperature is increased; and the multi-hole media, metal oxide and the like serve as protection substances, the too high pipe wall temperature, caused bytoo high solar radiation, of the heat-absorbing sleeves can be prevented, the operation stability of the heat absorber is improved, and the service life of the heat absorber is prolonged.

Description

technical field [0001] The invention relates to the technical field of solar power generation, in particular to a solar gas heat absorbing device and a working method thereof. Background technique [0002] Due to the wide distribution and abundant reserves of solar energy, the development and utilization of solar energy, a clean and non-polluting renewable energy source, is of great significance for alleviating the current pressure on fossil energy and environmental pollution. [0003] There are two main forms of solar power generation: photovoltaic and photothermal. The advantage of solar thermal power generation is that it can use physical / chemical methods for low-cost heat storage (such as sensible heat, latent heat, and chemical reaction heat, etc.), high-quality power generation, and friendly to the grid. In general, the higher the operating parameter (such as temperature), the higher the system efficiency. Among them, the maximum operating temperature of the solar Br...

Claims

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Application Information

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IPC IPC(8): F24S10/75F24S10/95F24S40/50F24S60/00F24S50/80
CPCY02E10/44
Inventor 肖刚陈金利倪明江杨天锋骆仲泱岑可法
Owner ZHEJIANG UNIV