Solar energy photo-thermal conversion and energy storage device without heat exchange process through flow heat transfer working mediums

Abstract

The invention provides a novel solar energy photo-thermal conversion and energy storage device without a heat exchange process through flow heat transfer working mediums. The novel solar energy photo-thermal conversion and energy storage device is composed of a sunlight collecting-transferring unit, a photo-thermal conversion-conduction unit, a thermal storage unit and a temperature control unit all together. When the novel solar energy photo-thermal conversion and energy storage device is in operation, sunlight shines on the surface of the photo-thermal conversion-conduction unit through the collecting-transferring unit in an incident mode and is absorbed efficiently and converted into thermal energy which is quickly and effectively stored by the thermal storage unit through a heat conduction function, and the effective control of the thermal storage temperature of the thermal storage unit can be achieved through the temperature control unit. The novel solar energy photo-thermal conversion and energy storage device utilizes optical transmission materials for light energy transmission, overcomes the shortcoming that the operating temperature range of traditional heat transfer working mediums such as heat transfer oil and heat transfer melt salt is limited, is simple in structure, high in photo-thermal conversion efficiency and strong in thermal storage capacity, and can be popularized and applied to solar thermal electric power generation system and energy-saving buildings.

Description

Technical field [0001] The invention belongs to the technical field of solar light-to-heat conversion, and specifically relates to a new type of solar light-to-heat conversion and energy storage device in a no-flow mass transfer heat exchange process. Background technique [0002] In solving the global energy and environmental crisis, solar thermal conversion and storage utilization technologies have received great attention from the international community and are currently one of the research hotspots and priorities in the field of new energy technology. At present, solar thermal energy conversion-heat storage utilization technology has been widely applied. At present, solar thermal conversion and thermal storage technologies still need to be improved: (1) Solar thermal conversion efficiency is not high; (2) After the light converts heat, it needs to be carried out by thermally conductive oil or thermally conductive molten salt with strong corrosiveness and expensive structure....

AI Technical Summary

Problems solved by technology

[0004] Through the understanding of domestic and foreign literature, the efficient selection of absorption-type photothermal conversion materials and high-performance solar energy composite heat storage materials is a very important research aspect in solar energy utilization. A new type of solar light-to-heat conversion and energy storage device that integrates the function of "storage" without flow mass transfer and heat exchange process has not yet appeared.

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