Solar air collector

An air heat collector and solar energy technology, applied in solar thermal power generation, solar thermal devices, heating devices, etc., can solve the problems of low heat collection efficiency of heat collectors, achieve small heat transfer coefficient, reduce heat loss, and resist pressure powerful effect

Inactive Publication Date: 2011-10-26
TIANJIN UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the heat collection efficiency of this type of heat collector is low. Many scholars at home and abroad have improved it from the aspects of enhancing the heat exchange between the heat absorbing plate and the air, increasing the heat exchange area and reducing heat loss. Adding partitions to the hot plate, additional fins on the partitions, ch

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Embodiment 1

[0028] In order to obtain the performance of the perforated plate solar air collector, the combination of mathematical simulation and actual test is used to study it. Among them, the measurement parameters include solar radiation intensity, temperature and wind speed. The measuring instruments are TRT-2 pyranometer, T-type thermocouple, Fluke automatic reading and saving equipment, ZRQF series intelligent anemometer and KANOMAX KA22 hot wire anemometer.

[0029] The changes of solar radiation intensity, ambient temperature, air inlet temperature and outdoor wind speed on the day of measurement are as follows: Figure 8-Figure 11 shown. Depend on Figure 8-Figure 11 It can be seen that the ambient temperature and radiation intensity increase first and then decrease with time, at around 14:00 and 12:20 respectively, both reach the highest values, 296.31K and 431.3W / m 2 , the average ambient temperature and radiation intensity throughout the day are 293.90K and 364.4W / m 2 . T...

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Abstract

The invention discloses a solar air collector which comprises a shell, wherein a heat insulation layer is embedded in the shell; a vacuum glass cover plate is covered at the open end of the shell; an air inlet is formed at the lower end of the shell; an air outlet is formed at the top of the shell; a punching seam type heat absorption plate is installed in the space which is formed by the shell and the vacuum glass cover plate; and flow channels are respectively formed in the space between the vacuum glass cover plate and the punching seam type heat absorption plate and in the space between the punching seam type heat absorption plate and the shell. In the solar air collector disclosed by the invention, the vacuum glass has the advantages of high transmittance, small heat transfer coefficient, strong compression resistance and the like, and can effectively reduce the heat loss of the collector. By adopting the collector disclosed by the invention, the convection heat transfer area between a heat absorption plate and the air is increased; the airflow disturbance is enlarged; the convection heat transfer coefficient of the air and the heat absorption plate is improved; and the radiation and convection heat transfer capabilities are strengthened.

Description

technical field [0001] The invention relates to an air heat collector, in particular to a solar air heat collector. Background technique [0002] Flat plate collectors can absorb both direct solar radiation and diffuse radiation. This kind of collector has the advantages of small investment, simple structure, less failures, convenient maintenance and management, and easy integration with buildings. Therefore, compared with vacuum tube heat collectors As far as the collector is concerned, the application space of the collector in village and town buildings is larger. [0003] However, the heat collection efficiency of this type of heat collector is low. Many scholars at home and abroad have improved it from the aspects of enhancing the heat exchange between the heat absorbing plate and the air, increasing the heat exchange area and reducing heat loss. Adding partitions to the hot plate, additional fins on the partitions, chamfering, wire mesh and corrugated modules, etc., an...

Claims

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Application Information

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IPC IPC(8): F24J2/46F24J2/50
CPCY02E10/40
Inventor 张欢由世俊李宪莉高煜李博佳
Owner TIANJIN UNIV
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