Straight-way solar energy heat exchange heat collector

Abstract

The invention relates to a straight-way solar energy heat exchange heat collector using solar energy as a heat source and belongs to the technical field of medium and high temperature solar energy utilization. The straight-way solar energy heat exchange heat collector comprises a straight-way transparent tube, a multi-curved face metal heat exchange tube, heat exchange tube end enclosures, a metal expansion joint, adsorbent storage rings, concave spacing sealing rings, metal snap rings, a working medium channel pipe, metal cover plates, sealing fixed plates, card type shield covers and vacuum connectors, wherein the two ends of the multi-curved face metal heat exchange tube are welded and fixed with the heat exchange tube end enclosures; the working medium channel pipe is connected with the heat exchange tube end enclosures; the multi-curved face metal heat exchange tube is provided with the metal expansion joint; the working medium channel pipe passes through the center of the metal cover plate to form an multi-curved face metal heat exchange tube component which is integrally sleeved in the straight-way transparent tube and the two ends of which are sequentially provided with the adsorbent storage rings, the concave spacing sealing rings and the metal snap rings; the sealing fixed plates seal and fix the metal snap rings and the metal cover plates; the two ends of the straight-way transparent tube are provided with the card type shield covers; and the vacuum connectors are fixed on the card type shield covers.

Description

technical field [0001] The invention relates to a straight-through solar heat exchange and heat collection device using solar energy as a heat source, and belongs to the technical field of medium and high temperature solar heat utilization. Background technique [0002] As we all know, most of the solar collector tubes widely used at present are double-layer glass tube structures with one end closed or straight-through glass inner tubes open at both ends. If double-layer glass tubes are used, the outer surface of the glass inner tube is coated There is a solar selective absorption coating, the working fluid is carried in the glass inner tube, and the vacuum is drawn between the glass inner tube and the glass outer tube. The heat collecting tube made in this way, when working, the temperature difference between the inner and outer tubes is large, and it is easy to cause tube explosion. In addition, the volume of the tube is too large, so it is not easy to heat. [0003] Alth...

AI Technical Summary

Problems solved by technology

The heat collecting tube made in this way, when working, the temperature difference between the inner and outer tubes is large, and it is easy to cause tube explosion. In addition, the volume of the tube is too large, so it is not easy to heat

[0003] Although the solar collector tube used in trough solar collector power generation adopts the metal tube plus half-wing method or the heat pipe vacuum tube technology, the final heat absorption area and gas production are limited, and the sealing structure has no effect on the expansion of the material (transition metal). Strict coefficient requirements, high technical requirements for compatibility between glass and metal, although the hot press sealing process, low-temperature glass solder sealing process, flame melting process, and high-frequency melting process have been used. It seems that the reliability is insufficient, coupled with the difficulty of processing, high cost and maintenance, it is difficult to popularize in the domestic market, and currently only stays in research and development and small-scale government-supported projects

[0004] In the past 30 years, with the emphasis on energy in various countries, many scientific research institutes and some famous enterprises at home and abroad have laid a certain foundation in the field of medium and high temperature, but the key problem of "high heat, low Absorption rate, low utilization rate", "effective combination of glass and metal", "sealing and thermal expansion of different materials" and other problems plague the development of straight-through solar collector tubes, not to mention their wide application as functional components of buildings To the project integrated with the building

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