Tube-fin flat plate collector

Abstract

A tube-fin flat plate collector is characterized in that the tube-fin flat plate collector comprises a heat absorbing plate, a flow channel, a cover glass tube and a frame; an water inlet pipe, a water outlet pipe, a connecting pipe and a branch pipe form the flow channel; one end of the branch pipe is communicated with the connecting pipe; the other end of the branch pipe is connected with the water inlet pipe and the water outlet pipe; the length direction of the heat absorbing plate welded on the branch pipe is in parallel with an axis of the branch pipe; a selective absorbing coating is arranged on the front and back of the heat absorbing plate; the heat absorbing plate is located on a light-receiving side of the branch pipe; the width of the heat absorbing heat is greater than the diameter of the branch pipe; the branch and the heat absorbing plate are disposed in the cover glass tube with both ends sealed; a reflecting member located below the branch pipe is arranged in the cover glass tube; the width of the reflecting member is greater than that of the heat absorbing plate; an end portion of the cover glass tube is mounted in the frame; insulation Materials resistant to medium and high temperature fill the inner portion of frame. The tube-fin flat plate collector has the advantages of being high in thermal efficiency, low in cost, resistant to corrosion and high humidity and the like.

Description

technical field [0001] The invention relates to the technical field of solar heat collectors, in particular to a tube-fin flat plate heat collector. Background technique [0002] With the process of urbanization, residential concentration, and the trend of high-rise buildings have become inevitable. The vacuum tube solar water heating system is constantly improving in terms of safety and imperfect integration with buildings. The advantages of flat panel solar energy are becoming increasingly prominent. The urban solar thermal engineering market and the balcony wall-mounted field have been widely used. However, with the development of the market, the technical defects of the flat-plate collectors in their service life are gradually exposed. The structure of domestic flat-plate collectors is different from that of European and American markets. For heat collectors, flat plate collectors in European and American markets are generally made of fully sealed double-layer cover plat...

AI Technical Summary

Problems solved by technology

[0002] With the process of urbanization, residential concentration, and the trend of high-rise buildings have become inevitable. The vacuum tube solar water heating system is constantly improving in terms of safety and imperfect integration with buildings. The advantages of flat panel solar energy are becoming increasingly prominent. The urban solar thermal engineering market and the balcony wall-mounted field have been widely used. However, with the development of the market, the technical defects of the flat-plate collectors in their service life are gradually exposed. The structure of domestic flat-plate collectors is different from that of European and American markets. For heat collectors, flat plate collectors in European and American markets are generally made of fully sealed double-layer cover plates, filled with inert gas, and the heat-absorbing plate is not in contact with the air. However, domestic heat collectors usually use a single-layer cover plate for cost considerations. It cannot be completely sealed. After the heat-absorbing plate is working, with the temperature difference between day and night, a large amount of condensed water will appear in the cover plate. The collector is always in an environment of high humidity, high temperature, and contact with air, which will greatly affect the life and use effect. Therefore, higher design and preparation requirements are put forward for the coating of the collector, the material of the heat absorbing plate and the flow channel

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