Efficient solar energy thermal absorber based on optical-thermal absorbing cone structure

Abstract

The invention relates to an efficient solar energy thermal absorber based on an optical-thermal absorbing cone structure. The efficient solar energy thermal absorber based on the optical-thermal absorbing cone structure comprises a sealing cover, an insulating tube sleeve, an airflow tube, a thermal absorbing body, a glass cover and a thermal absorbing fastening piece. The efficient solar energy thermal absorber is characterized in that the thermal absorbing body is in a truncated prism structure and each plane can be manufactured separately. Each plane is respectively an optical-thermal absorbing conic board, a plurality of sharp pyramids are distributed on a surface of each plane and each plane is made of a high thermal conductive porous material. The glass cover is in a circular truncated cone shape. A closed containing cavity is formed by the sealing cover, the thermal absorbing body and the glass cover. Air enters into the containing cavity through an air inlet of the sealing cover and is heated through each porous medium optical-thermal absorbing conic board so that solar energy is taken and finally flows out from an outlet end of the thermal absorber along the airflow tube. The efficient solar energy thermal absorber based on the optical-thermal absorbing cone structure has the advantages of solving the problems that an existing thermal absorber is low in thermal absorbing efficiency, difficult to process, large in loss in inner flow and the like, being used independently and in a combined mode through connectors, being mainly applicable to a solar energy thermoelectric conversion system and guaranteeing efficient operation of the system.

Description

technical field [0001] The invention belongs to the technical field of energy and engineering equipment, and in particular relates to a high-efficiency solar heat absorber used in a solar thermoelectric conversion system. Background technique [0002] Since entering the 21st century, energy and environmental issues have gradually become the focus of attention of countries all over the world. People have also launched more research on clean, pollution-free and renewable new energy technologies. Solar energy is non-polluting and inexhaustible. The inexhaustible feature meets people's demand for new energy and also meets the sustainable development strategy. The solar thermoelectric conversion system is a thermoelectric system that utilizes solar energy and converts it into electrical energy. Under the current technical background, it has significantly better photoelectric conversion efficiency than solar photovoltaic systems, less floor space, and lower unit power. cost advan...

AI Technical Summary

Problems solved by technology

[0006] Beneficial effects of the present invention: Improve existing heat absorbers with low heat absorption efficiency, difficult processing, large internal flow loss, etc.

Images