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

A technology of solar water heaters and vacuum glass, which is applied to solar collectors, solar thermal energy, solar thermal power generation, etc. It can solve the problems of icing inside the tube, affecting the image, and large heat loss on the surface, so as to improve the heat exchange efficiency and improve the manufacturing process. Simple, fast heat transfer effect

Inactive Publication Date: 2005-03-16
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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
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.

Method used

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

Examples

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Embodiment Construction

[0010] The heat pipe of the vacuum glass cover plate heat pipe plate type solar water heater of the present invention is a gravity heat pipe, and the fins are welded to the heat pipe. The heat pipe is the heat collecting and heat transfer element of the collector, which can transfer a large amount of heat through a small area. The heat pipe uses the evaporation section and the condensation section of the working fluid to transfer heat. The evaporation section is placed under a heat source such as the sun to absorb heat, the liquid-phase working liquid absorbs the latent heat of vaporization and evaporates, and the other end of the heat pipe is the condensation section that is cooled by a cold source, such as water in a water tank, and the working liquid releases latent heat of vaporization. The condensate returns to the condensation section by its own gravity, and the working medium circulates by itself without external power. The work of the gravity heat pipe has a certain d...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24S10/40F24S10/95
CPCY02E10/44
Inventor 胡亚才洪荣华俞自涛魏林生王世锋
Owner ZHEJIANG UNIV
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