Heat collection and heat exchange component, solar heat collection plate and solar heat collector

Abstract

The invention provides a heat collecting and transferring component, comprising a pair of plate-shaped components which are arranged in the opposite directions and a fixing and sealing structure which is used for fixing and sealing the plate-shaped components, wherein, a concave part is formed on at least one of the plate-shaped components; at least one of the plate-shaped components is made by heat conduction material; when the plate-shaped components are bonded together by the fixing and sealing structure, the concave part forms a closed space which is provided with at least an inlet and atleast an outlet. The invention further provides a solar heat-collecting panel and a solar heat collector. The solar heat-collecting panel is provided with the heat collecting and transferring component; and the solar heat collector is provided with the solar heat-collecting panel. The heat collecting and transferring component has the advantages of antifreeze property, high heat collecting and transferring efficiency, little possibility of scale formation, corrosion resistance, simple process and low cost. The solar heat-collecting panel and the solar heat collector not only improve heat collecting efficiency, but also reduce production cost.

Description

technical field [0001] The present invention relates to a heat collection and heat exchange component, a solar heat collection panel and a solar heat collector. Background technique [0002] At present, with the development of solar energy utilization technology, solar water heaters using solar collectors for heating are more and more widely used. For solar collectors, the heat-collecting component is an important part that determines its quality. [0003] Most of the heat collecting components used in the heat collectors of the existing flat panel solar water heaters are copper tube fin type heat collecting systems under the flat glass. like figure 1 As shown, the heat collecting components mainly include a heat collecting plate 1 , a heat collecting red copper pipe 2 , a heat exchange hot water riser 3 , a water tank 4 , a water temperature and water level controller 5 , and a heat exchange cold water descender 6 . [0004] However, the disadvantages of the existing hea...

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Problems solved by technology

[0004] But, the shortcoming of existing this heat collecting member is: a) not antifreezing, because what adopt in the heat collecting plate is copper tube, if use in the area with air temperature lower than 0 degree, water freezing will cause copper tube to burst ; b) The heat collection efficiency is low, and there are certain gaps between the copper tubes. These gaps increase the distance between the heat conduction of the fins on the sides of the copper tubes that absorb sunlight and heat to the copper tubes, resulting in a decrease in heat collection efficiency, and the copper tubes will also condense. Scale will increase thermal resistance and affect heat collection efficiency over time; c) Higher production costs

[0006] However, the heat-collecting member of the above-mentioned utility model solar heat collector, when the high-pressure medium is injected into the middle wrapped hose, will be deformed into a circular tube shape, which relatively increases the heat capacity of the heat collector and reduces its ratio. The surface area makes it less efficient to collect heat, and it also affects the appearance of the collector

[0007] As for the existing flat heat exchangers, they are basically made of metal materials. This is because the heat conduction of metal materials is fast and easy to manufacture, but ordinary metal materials are often easy to react with the heat exchange medium, resulting in material corrosion Scaling inside the heater must be made of special stainless steel or precious metals such as gold and silver, which increases the material cost and cannot completely solve the scaling problem. When used as a heat exchange medium, especially in heat exchangers in chemical production, seawater desalination, sewage treatment and groundwater heat exchange industries, the problems of hot water scaling and blockage of pipelines and frozen water expansion and cracking pipelines have not been resolved. well resolved

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