Heat-tracing type solar heat collecting tube

Abstract

The invention relates to a heat-tracing type solar heat collecting tube. The heat-tracing type solar heat collecting tube comprises a transparent tube, a heat absorbing tube and a light reflecting film. The space between the transparent tube and the heat absorbing tube is vacuumized. The light reflecting film is further fixedly installed on the inner tube wall of the transparent tube. The transparent tube is rotatably installed on a machine body. The transparent tube is further coaxially sleeved with a transmission tube which is connected with the transparent tube through transmission gears. The axes of the transmission gears are parallel to the axis of the transparent tube, and the transmission gears are circumferentially and evenly distributed on the outer circumferential wall of the transparent tube at equal intervals. The transmission tube is further coaxially and fixedly sleeved with a heat tracing ring, and the outer ring wall of the heat tracing ring is made of heat absorbing materials. The heat tracing ring is closely filled with heat expansion balls. The heat collecting tube effectively improves the heat-absorbing surface and meanwhile can be kept directly facing sunlight in real time, and the utilization rate of solar energy is greatly increased.

Description

technical field [0001] The invention relates to a solar water heater accessory, in particular to a heat collecting tube. Background technique [0002] A water heater is a tool that provides hot water for a limited range. After years of development, water heaters are divided into the following categories: storage electric water heaters, instant electric water heaters, instant electric water heaters, gas water heaters, solar electric water heaters and air Source water heaters; Among them, solar water heaters are favored by the majority of users for their advantages of environmental protection, energy saving, and convenience; traditional solar water heaters make the heat collecting tubes into cylindrical shapes in order to ensure that the heat collecting tubes can maintain a certain heat absorption area at each time period Or compound curved surface, although this structure can keep the light intensity absorbed by the heat collecting tube equal in each time period, but it can...

AI Technical Summary

Problems solved by technology

[0002] A water heater is a tool that provides hot water for a limited range. After years of development, water heaters are divided into the following categories: storage electric water heaters, instant electric water heaters, instant electric water heaters, gas water heaters, solar electric water heaters and air Source water heaters; Among them, solar water heaters are favored by the majority of users for their advantages of environmental protection, energy saving, and convenience; traditional solar water heaters make the heat collecting tubes into cylindrical shapes in order to ensure that the heat collecting tubes can maintain a certain heat absorption area at each time period Or compound curved surface, although this structure can keep the light intensity absorbed by the heat collecting tube equal in each time period, but it cannot absorb light energy with the maximum efficiency; this makes the working efficiency of the solar water heater significantly reduced; therefore, a more scientific and advanced Heat collector tubes become a key factor in improving solar efficiency

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