Method for measuring heat flow distribution on opening plane of tower-type solar heat absorber

A measurement method and technology of heat flow distribution, which is applied in the field of measuring heat flow density distribution on the opening plane of solar tower heat absorbers, can solve the problem of demanding reflective sheets, few people use them, and not suitable for cavity heat absorbers, etc. question

Inactive Publication Date: 2011-09-07
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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Problems solved by technology

[0013] However, the method introduced in patent US20090250052 is obviously not suitable for other heat sinks including cavity heat sinks
In addition, this heat flow distribution measurement method has particularly strict requirements on reflective sheets. Unlike the direct and indirect methods introduced above, this patented method is currently rarely used

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  • Method for measuring heat flow distribution on opening plane of tower-type solar heat absorber
  • Method for measuring heat flow distribution on opening plane of tower-type solar heat absorber
  • Method for measuring heat flow distribution on opening plane of tower-type solar heat absorber

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] The embodiment of the present invention is a cavity-type heat absorber with an opening size of 2mx2m. Such as figure 1 As shown, (M+N)x2=44 heat flow meters 4 are arranged on the peripheral rectangular area boundary 2 of the physical boundary 1 of the heat absorber opening plane, where M=N=11; these heat flow meters 4 correspond horizontally to the left and right respectively , which correspond vertically up and down, naturally determine the interpolation grid point 3 on the plane of the heat sink opening. The signal line 5 of each heat flow meter is connected to the data acquisition instrument 6, and the data acquisition instrument 6 is connected to the PC through the communication and data line 8, and the software or calculation program for heat flux distribution data processing is installed on the PC. exist figure 1 The X coordinat...

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Abstract

The invention provides a method for measuring heat flow distribution on an opening plane of a tower-type solar heat absorber, which is characterized by comprising the following steps of: choosing a rectangular region boundary on the opening plane of the heat absorber, wherein the rectangular region boundary comprises a physical boundary of the opening plane of the heat absorber; dividing a rectangular region of the opening plane of the heat absorber into rectangular grids, taking a direction of a horizontal grid line as an X-axis direction, taking a direction from an upper grid line to a lower grid line as a Y-axis direction, and arranging heat-flow meters at grid points on the rectangular region boundary; synchronously measuring and acquiring heat-flow density values of the rectangular region boundary by the heat-flow meters through a data acquisition instrument, and rebuilding the heat flow distribution on the opening plane of the heat absorber by interpolation.

Description

technical field [0001] The invention relates to a method for measuring the heat flux density distribution on the opening plane of a solar tower heat absorber. Background technique [0002] In the solar tower concentrating heat collection system, the heat absorber is generally placed on the top of the solar tower, and there are many heliostats on the ground on one side of the solar tower. These heliostats can automatically track the sun and form a concentrating field. Reflect incident sunlight towards the receiving surface of the heat sink. Of course, some heat sinks are placed on the ground, and the large secondary reflector installed on the top of the tower reflects the concentrated sunlight from the concentrating field to the opening of the ground heat sink again. [0003] The opening of the heat absorber is a natural interface of the energy flow of the solar tower concentrating heat collection system. It is not only the outlet of the energy flow of the concentrated field...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K17/00G01M11/02
Inventor 郭明焕王志峰
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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