Solar vacuum heat-collecting tube with fluid mixer

A vacuum heat collector tube and mixer technology, which is applied to solar thermal power generation, solar thermal devices, heating devices, etc., can solve the problem of uneven heat flux density of solar collector tubes, optimize heat collection performance, strengthen convective heat transfer, prevent cracked effect

Inactive Publication Date: 2013-08-28
LIMA RENEWABLES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the shortcomings of the prior art, the present invention provides a solar vacuum heat collecting tube with a flow mixer, which can overcome the defect of extremely uneven heat flux density of the concentrating solar heat collecting tube, so as to prolong the service life of the heat collecting tube

Method used

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  • Solar vacuum heat-collecting tube with fluid mixer
  • Solar vacuum heat-collecting tube with fluid mixer

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Such as figure 1 As shown, the present invention is a solar vacuum heat collecting tube with a flow mixer, comprising a glass outer tube 5, a metal tube 6 packaged on the inner surface of the glass outer tube 5 and coated with a selective sunlight-absorbing coating 7, arranged on a glass The two ends of the outer tube include a metal bellows 1 and a Kovar tube 2 packaging device, and a vacuum chamber 3 is formed between the glass outer tube 5 and the metal tube 6. It is characterized in that a flow mixer 8 is arranged inside the metal tube 6, increasing The mixing of the fluids on the cross section makes the temperature of the fluids in the metal tube 6 uniform.

[0020] Such as figure 2 As shown, the flow mixer 8 adopts a baffle structure. After the heat-carrying fluid flows through the baffle mixer, the flow direction of the fluid ...

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Abstract

The invention discloses a solar vacuum heat-collecting tube with a fluid mixer. The solar vacuum heat-collecting tube comprises an external glass tube, a metal tube packaged in the external glass tube and a packaging device. The packaging device further comprises metal corrugated tubes and kovar alloy tubes. Vacuum cavities are formed by the external glass tube and the metal tube. A sunlight selective-absorption coating is coated on the surface of the metal tube. The fluid mixer is arranged on the metal tube. The fluid mixer plays a role in disturbing and mixing of fluid in the solar vacuum heat-collecting tube to facilitate temperature of the fluid in the solar vacuum heat-collecting tube to be uniform, so that pipeline bending damages to the heat-collecting tube caused by an overlarge temperature difference between a condensation side and a non-condensation side are prevented, and bending and cracking of the insulating glass tube are avoided. With the technology of the fluid mixer, service life of the heat-collecting tube can be prolonged, and heat-collecting efficiency of a heat collector can be improved.

Description

technical field [0001] The invention relates to a solar vacuum heat collecting tube technology with a flow mixer, and specifically belongs to the technical field of solar vacuum heat collecting tubes. Background technique [0002] Among the current concentrated solar heat collection technologies, trough or Fresnel solar heat collection technologies have a wide range of applications. The collector receiving pipes of trough and linear Fresnel solar collectors are mostly smooth seamless steel pipes, and the receiving pipes are heated non-uniformly on one side. On the one hand, the heat flow on the concentrating side is greater than that on the non-concentrating side, so that the temperature on the concentrating side of the metal tube is higher than that on the non-concentrating side, and the non-uniform heating on one side makes the energy flow distribution extremely uneven, which will cause a large temperature difference between the upper and lower sides of the heated tube. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/46
CPCY02E10/40
Inventor 陈九法杜中玲徐宝江苏继程章智博
Owner LIMA RENEWABLES
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