Flat-type solar water heater with vacuum glass cover plate heating tubes

Abstract

Disclosed is a solar energy water heater of vacuum glass cover heat pipe plane type, comprising tank consisted of thermal insulating material and outer gimbal, vacuum plane glass above the tank, absorber plate consisted of heating pipe and fin, condensing zone of the heat pipe and recycling water tank are connected, the water tank and water storage are connected or the condensing zone of heat pipe is directly connected to water storage, and absorber plate is under the vacuum plane glass. The invention has no problems of icing, scale formation and atmospheric corrosion, fairly good red flared radiation can be emitting from heat collector inside because of high level of transparency of the vacuum plane glass to sun radiation but opaque to red flared radiation, decreasing radiation heat loss to absorber plate. Besides, heat pie has fast start-up, high sensitiveness, wide work range, fast heat transfer, only oneway heat exchange between heat collecting pie, and when the sun radiation is fairly low, heat elimination of heating working substance to environment can be reduced.

Description

technical field [0001] The invention relates to a vacuum glass cover plate heat pipe plate type solar water heater. Background technique [0002] The common vacuum tube solar water heaters in the domestic market have been widely used for many years, and the following problems need to be solved urgently: ① scaling problem in the tube. Because it circulates in the heat collecting pipe all the year round, scale is formed in the pipe, and the scale hinders heat transfer, which significantly reduces the efficiency of the heat collector. Especially in rural areas, due to poor water quality, the efficiency of collectors decreases rapidly over time. ② The problem of freezing in the pipe. In the severe winter, the water in the heat collecting pipe freezes and expands in volume, causing the pipe to burst. ③There is too much water in the heat collecting tube, and the water temperature rises slowly. The hot water in the tube cannot be taken out completely, a...

AI Technical Summary

Problems solved by technology

Because it circulates in the heat collecting pipe all the year round, it causes scale in the pipe, and the scale hinders heat transfer, so that the efficiency of the heat collector is significantly reduced

Especially in rural areas, due to poor water quality, the efficiency of collectors decreases rapidly over time

②The problem of icing in the pipe

③There is too much water in the heat collecting tube, and the water temperature rises slowly. The hot water in the tube cannot be taken out completely, and it cannot bear the pressure in the tap water piping system and is easy to burst

⑤ Large surface heat loss

⑥ Evacuated tube solar water heaters cannot be made into the overall structure of the building plate and combined with the building

These problems have brought a lot of inconvenience to consumers, and to a certain extent have affected the image of this energy-saving and environmentally friendly product in the minds of consumers, and at the same time directly affected the further development of the entire solar energy industry.

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