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Medium-high temperature solar heat exchange pipe

A technology for solar energy and heat exchange tubes, applied in the field of solar energy tubes, can solve the problems that the reliability and stability of transition materials cannot be guaranteed, direct vacuum sealing cannot be achieved, and the trough power generation technology occupies a large space, etc. Heat energy utilization rate and heating efficiency, the effect of improving heating efficiency and heat energy utilization rate, and improving the stability and safety of use

Active Publication Date: 2020-11-27
NINGBO DUNCOTEK NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Medium and high temperature solar tubes are used for thermal power generation. In the existing technology, trough thermal power generation technology is used, which has a technical difficulty. In the vacuum sealing with metal and glass, due to the difference in linear expansion coefficient between the stainless steel material and glass material commonly used in China Larger, the two cannot achieve direct vacuum sealing, a transition material must be added between the two, the construction process is complicated and difficult, which increases the production cost, and the reliability and stability of the transition material It cannot be guaranteed; and the trough power generation technology occupies a large space and the utilization rate of heat energy is not high

Method used

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  • Medium-high temperature solar heat exchange pipe
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  • Medium-high temperature solar heat exchange pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment one, refer to figure 1 and figure 2 , the heat conduction tube in this embodiment is a spiral tube, and it is coaxially arranged with the water storage cavity. The ratio between is greater than or equal to 1 / 2 and less than or equal to 4 / 5, preferably 3 / 5, which increases the heat exchange area between the medium and water in the water storage chamber, and avoids low temperature caused by excessive contact area Poor heat transfer reduces the amount of copper tubes used, which reduces production costs and improves heat transfer efficiency; and the height ratio of the spiral tube to the medium chamber is greater than or equal to 6 / 10 and less than or equal to 9 / 10, which can produce a more ideal The flow of the medium improves the heat absorption efficiency and heat release efficiency of the medium.

Embodiment 2

[0034] Embodiment two, refer to image 3 and Figure 4 , the heat pipe in this embodiment is a serpentine bend reciprocatingly bent up and down, and the two sides of the serpentine bend are bent to form a cylindrical serpentine bend coaxial with the water storage cavity, and the cylindrical serpentine bend The liquid inlet of the tube is connected with the lower end of the medium chamber, and the liquid outlet of the cylindrical serpentine elbow is connected with the upper end of the medium chamber. The heat pipe in this embodiment is also made of copper; The heat rate is fast; the ratio of the diameter of the heat pipe to the thickness of the medium chamber is greater than or equal to 1 / 10 and less than or equal to 1 / 4, and the ratio of the internal volume of the heat pipe to the volume of the medium in the medium chamber is greater than or equal to 1 / 5 and less than It is equal to 1 / 1, which can prevent the medium in the medium cavity from entering the heat pipe without suf...

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Abstract

The invention provides a medium-high temperature solar heat exchange pipe which comprises a water storage pipe, a medium pipe, a light transmission pipe and a heat conduction pipe. A water storage cavity is formed in the water storage pipe, and a water inlet pipe and a steam outlet pipe are arranged in the water storage cavity; the water storage pipe is sleeved with the medium pipe, the head of the medium pipe is sealed, the tail of the medium pipe is necked down and is hermetically connected with the water storage pipe, a heat absorption film is attached to the outer wall of the medium pipe,and the space between the inner wall of the medium pipe and the outer wall of the water storage pipe is filled with media; the medium pipe is sleeved with the light transmission pipe, the head of thelight transmission pipe is sealed, the tail of the light transmission pipe is necked down and is hermetically connected with the water storage pipe or the medium pipe, a vacuum cavity is arranged between the inner wall of the light transmission pipe and the outer wall of the medium pipe, the heat conduction pipe is arranged in the water storage cavity and is in contact with water, and the heat conduction pipe communicates with the medium cavity. The medium-high temperature solar heat exchange pipe is simple in process, low in manufacturing cost, high in heat utilization rate and good in safety.

Description

technical field [0001] The invention relates to a solar tube, in particular to a medium-high temperature solar heat exchange tube. Background technique [0002] Medium and high temperature solar tubes are used for thermal power generation. In the existing technology, trough thermal power generation technology is used, which has a technical difficulty. In the vacuum sealing with metal and glass, due to the difference in linear expansion coefficient between the stainless steel material and glass material commonly used in China Larger, the two cannot achieve direct vacuum sealing, a transition material must be added between the two, the construction process is complicated and difficult, which increases the production cost, and the reliability and stability of the transition material There is no guarantee; and the trough power generation technology occupies a large space, and the utilization rate of heat energy is not high. Contents of the invention [0003] 【1】Technical prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24S10/40F24S10/75F24S10/90F24S70/12F24S70/20F24S80/70
CPCF24S10/40F24S10/75F24S10/90F24S80/70F24S70/20F24S70/12Y02E10/44
Inventor 邹晓宇
Owner NINGBO DUNCOTEK NEW MATERIAL CO LTD