Solar energy photo-thermal conversion and heat accumulation device

Abstract

The invention discloses a solar energy photo-thermal conversion and heat accumulation device comprising a shell, a plurality of openings and a hollow sleeve provided with a hollow heat storage chamber, wherein the shell is provided with a translucidus port and a hollow sleeve provided with a hollow heat storage chamber; the translucidus port is provided with a heat-insulation translucidus cover; the hollow sleeve is sheathed in the cavity of the shell; the hollow heat storage chamber of the shell and the hollow heat storage chamber of the hollow sleeve are both provided with heat storage media; the hollow sleeve is sheathed in the cavity of the shell in a mode of inverse opening; the cavity between the inner side wall of the shell and the outer side wall of the hollow sleeve as well as the cavity between the inner side wall and the outer side wall of the adjacent hollow sleeves are respectively provided with a photo-thermal conversion chamber of which the wall surface is plated with aphoto-thermal conversion film; the end part of the shell is provided with a cover body; the hollow sleeve is installed in the cavity of the shell by a bearing plate; the bearing plate seals the photo-thermal conversion chamber; and the position, opposite to the translucidus port, on the outer wall of the hollow sleeve is provided with a light direction conversion cone. The device in the inventionhas high photo-thermal conversion efficiency and high heat storage energy density and is easy to take heat.

Description

technical field [0001] The invention is a solar light-to-heat conversion and heat storage device, which belongs to the transformation technology of the solar light-to-heat conversion and heat storage device. Background technique [0002] Solar thermal energy conversion and utilization technology and solar electric energy conversion and utilization technology are common solar energy utilization methods. Among them, solar thermal energy conversion and utilization technology is the one with the highest efficiency, the most mature technology, and the best economic benefits among solar energy utilization technologies, mainly including solar houses, solar water heaters, solar greenhouses, and solar cookers. Solar water heater is a major industry in the application of solar energy achievements, and it is the product with the highest penetration rate among human solar energy industrial products so far. [0003] At present, there are two light-to-heat conversion methods for solar wa...

AI Technical Summary

Problems solved by technology

The domestic technologies of these two methods need to be improved: (1) The light-to-heat conversion efficiency of these two domestic solar water heaters is not high

(2) The temperature obtained by these two heat collection methods will not be too high, so the heat transfer efficiency is not high

(3) This heat collection method cannot meet the high temperature requirements such as using thermoelectric materials for solar thermal power generation (the greater the temperature difference, the greater the heat transfer flow; the greater the temperature difference, the higher the efficiency of using thermoelectric materials for solar thermal power generation), The main reason is that the energy flux density per unit area of ​​natural radiation sunlight is limited

There are patent reports that high temperature can be obtained through some measures, but the conversion efficiency of those photothermal materials is not high, or the heat is easily lost, or the heat extraction rate is not high

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