Solar collectors

Abstract

The invention discloses a solar thermal collector. The solar thermal collector is characterized in that an upper cover body is a transparent space geometry which is of a three-dimensional structure, the upper cover body and a lower cover body are connected in a sealed mode, a water inlet manifold and a water outlet manifold are arranged in a shell body, a water inlet of the water inlet manifold and a water outlet of the water outlet manifold are respectively formed outside the shell body and connected with a water inlet pipe and a water outlet pipe respectively, and the water inlet manifold and the water outlet manifold are communicated through an absorption heat transmitting pipe. The transparent upper cover body is composed of at least two transparent space geometries, where the transparent space geometries are arranged in sequence, each transparent space geometry is a three-dimensional space geometry and can recess or protrude outwards, and the sectional area of each transparent space geometry is gradually reduced from inside to outside. The solar thermal collector has the advantages of being capable of achieving use of sunlight at all times, high in photothermal conversion efficiency, small in thermal loss, capable of increasing the effective thermal conduction area, strong in self-cleaning capability, long and stable in efficiency keeping, small in size and capable of being installed parallel to the vertical face of a building wall.

Description

technical field [0001] The invention relates to a light energy absorbing device, in particular to a solar heat collector for realizing light-to-heat conversion and heat energy output. Background technique [0002] At present, known solar heat collectors mainly include vacuum tube type and flat plate type. [0003] The vacuum heat collection tube of the vacuum tube solar collector is composed of two layers of glass tubes inside and outside. Vacuum is drawn between the inner and outer glass tubes, and the outer surface of the inner glass tube is coated with an absorbing layer. After the absorbing coating absorbs solar energy, the heat energy obtained is conducted to the water through the inner glass tube wall. After the water is heated, it becomes lighter and floats up to form a natural circulation to gradually heat the water in the water tank. Evacuated tube solar collectors use vacuum thermal insulation to greatly suppress heat loss, but the existing products have the prob...

AI Technical Summary

Problems solved by technology

The vacuum thermal insulation technology scheme applied to vacuum tube solar collectors has not been adopted in flat plate collectors

[0009] In addition, in terms of improving the safety of use such as wind pressure resistance and the aesthetic appearance design that is conducive to building integration, there is no special discussion in public reports

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