A new type of tower-type solar heat absorber heating surface module

A technology for solar heat absorbers and heating surfaces, which is applied to solar heat collectors, components of solar heat collectors, solar thermal energy, etc., and can solve the problem of cracking and failure of heat absorber tube panels and affecting tower-type solar thermal power generation systems Safe operation and other issues to achieve the effect of increasing the safety margin, reducing the difference in heating, relieving severe deformation and bearing excessive stress

Active Publication Date: 2018-09-14
SHANGHAI BOILER WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coupled with the inherent characteristics of solar energy, such as intermittency and variability (influenced by factors such as cloud cover, etc.), it is easy to cause the rupture and failure of the heat absorber tube panel, thus affecting the safe operation of the entire tower solar thermal power generation system

Method used

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  • A new type of tower-type solar heat absorber heating surface module
  • A new type of tower-type solar heat absorber heating surface module
  • A new type of tower-type solar heat absorber heating surface module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of tower type solar heat absorber evaporates heating surface module, comprises lower header, lower connecting pipe row, upper connecting pipe row, upper header, and heat-absorbing tube panel (such as figure 1 shown). The lower end of the heat-absorbing tube panel is connected to the lower header through the lower connecting tube row. The upper end of the heat-absorbing tube panel is connected to the upper header through the upper connecting tube row. The distance between the centerlines of adjacent tubes of the heat receiving tube panels of the heat absorber is 3.2R (R is the outer radius of the tubes). The cross-sectional schematic diagram of the heat-absorbing tube panel structure is as follows figure 2 shown. The back of the heat-absorbing tube panel is provided with an insulating layer, and the outer boundary of the insulating layer is tangent to the vertex T of the backlight surface of each tube of the heat-absorbing tube panel. A wedge-shaped convex re...

Embodiment 2

[0040] Compared with Embodiment 1, this embodiment is the same as Embodiment 1 except that the distance from the apex A of the reflective block to the heat preservation layer is 0.25R. Similar effects can also be obtained in this embodiment. The cross-sectional schematic diagram of this embodiment is as image 3 shown.

Embodiment 3

[0042] Compared with Embodiment 1, this embodiment is the same as Embodiment 1 except that the distance from the apex A of the reflective block to the heat preservation layer is 0.6R. Similar effects can also be obtained in this embodiment. The cross-sectional schematic diagram of this embodiment is as Figure 4 shown.

[0043] Since the sunlight received by the heat receiving tube panel of the solar heat absorber comes from the reflection of sunlight by mirrors at different angles, at the same time, the sunlight received by the tubes of the heat absorber tube panel and their intervals comes from different angles, Not the original parallel sun light. Therefore, the indication of light in different directions here is appropriate and in line with the actual working conditions of the heat sink.

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Abstract

The invention discloses a tube back condensation tower-type solar heat absorber heating surface module which comprises a lower header, a lower connecting tube row, an upper connecting tube row, an upper header and a heat absorption tube panel. The lower end of the heat absorption tube panel is connected with the lower header through the lower connecting tube row. The upper end of the heat absorption tube panel is connected with the upper header through the upper connecting tube row. The tube back condensation tower-type solar heat absorber heating surface module is characterized in that a certain gap is reserved between every two adjacent tubes in the heat absorption tube panel, and a respective inwards-concaved curved surface having the reflection function on incoming light is arranged on the shady face of each tube of the heat absorption tube panel. According to the tube back condensation tower-type solar heat absorber heating surface module, the heating concentration ratio of the tubes is reduced, and therefore the heating difference between the light facing side and the shady side of each tube is reduced, and the problem that severe deformation and too high bearing stress are caused by uneven heating of the light facing side and the shady side of each tube is relieved; and the tube wall temperature of the front point area of each tube is reduced, and therefore the safety margin of heating surface operating is increased.

Description

technical field [0001] The invention relates to an arrangement structure of heating surface modules of a heat absorber of a tower-type solar power station, and belongs to the technical field of tower-type solar thermal power generation. Background technique [0002] Solar high-temperature thermal power generation technology is an important direction for large-scale utilization of solar energy, and it has far-reaching significance for human beings to solve problems such as fossil energy crisis and air pollution. According to different focusing methods, solar high-temperature thermal power generation can be divided into three types: dish type, trough type, and tower type; the working fluids used include water (water vapor), molten salt, air, heat transfer oil, liquid metal, and other organic substances, etc. . The tower focus has attracted the attention of many countries in the world due to its advantages of large capacity and high parameters. [0003] Tower-type thermal pow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24S10/70F24S23/70F24S80/00
CPCF24S10/70F24S23/70F24S80/00F24S20/20F24S23/77Y02E10/44
Inventor 闫凯乌晓江刘建斌郑海英张建文
Owner SHANGHAI BOILER WORKS
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