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System and method for measuring surface energy flux density

An energy flow density and measurement system technology, which is applied in the field of the surface energy flow density measurement system of the receiving surface, can solve the problems such as the measurement of the energy flow density not applicable to the large-size receiving surface, the high manufacturing cost and the difficulty, and achieves low cost, The effect of improving precision, improving accuracy

Active Publication Date: 2012-05-09
ZHEJIANG SUPCON SOLAR TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above technologies require that the size of the spot imaging device be larger than the aperture of the measured spot, so the size of the spot imaging device is often large, and the manufacturing cost of the large-size spot imaging device is high, and it is difficult to operate in practice, so the existing systems and methods are not applicable Measurement of energy flux density on large receiving surface

Method used

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  • System and method for measuring surface energy flux density
  • System and method for measuring surface energy flux density
  • System and method for measuring surface energy flux density

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A method for measuring surface energy flux density, used to indirectly measure the surface energy flux density of a receiving surface, including the following steps:

[0043] (1) Install two parallel guide rails 20 (motion assistance mechanism) along the upper and lower ends of the receiving surface 10, such as figure 2 As shown, the light spot imaging device 100 is a long strip, and the two ends are respectively connected to two guide rails 20 and slide along the receiving surface through the guide rails 20 (the light spot imaging device is located in front of the receiving surface), and the movement track of the light spot imaging device 100 covers the entire receiving surface 10.

[0044] The width and height of the spot imaging device are determined according to the actual size of the receiving surface. For ease of installation, the height of the spot imaging device 100 is H 1 Slightly larger than the height H of the receiving surface 10 2 , The width W of the spot imagi...

Embodiment 2

[0072] Such as image 3 As shown, two parallel guide rails 30 are vertically arranged along the left and right ends of the receiving surface 10, the spot imaging device 100 is a long strip, and the two ends are respectively connected to the two guide rails 30 and move up and down along the receiving surface through the guide rails 30 (light spot The imaging device is located in front of the receiving surface), and the movement track of the light spot imaging device 100 covers the entire receiving surface 10. The width and height of the light spot imaging device and the receiving surface, the length of the guide rail, the moving speed of the light spot imaging device and the shooting speed of the image acquisition device are the same as in the first embodiment.

Embodiment 3

[0074] Such as Figure 4 As shown, a rotating shaft 40 is fixedly installed around the receiving surface 10 (the rotating shaft is arranged at any suitable position around the receiving surface or in the receiving surface area. The installation position is not limited and can be freely selected according to needs to ensure that the light spot imaging device rotates track coverage The entire receiving surface), one end of the spot imaging device 100 is pivotally connected to the rotating shaft 40, and rotates around the rotating shaft 40 along the receiving surface 10 (the spot imaging device is located in front of the receiving surface). The shape and size of the spot imaging device 100 ensure that its movement track covers the entire Receiving surface 10 is enough. The rotational angular velocity of the light spot imaging device is π / 6 radians / second, and the shooting speed of the image acquisition device is 20 frames / second (the rotational angular velocity of the light spot im...

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Abstract

The invention discloses a system for measuring surface energy flux density, which is used for indirectly measuring the surface energy flux density of a receiving face. The system comprises a light spot imaging device, an image acquisition device and an image processing device, wherein the image acquisition device is used for acquiring image information of the surface of the light spot imaging device, the image processing device is used for processing the image inforamtion and calculating energy flux density distribution, the light spot imaging device moves along the receiving face, and a motion track covers the whole receiving face. The invention also discloses a method for measuring the surface energy flux density. In the invnetion, the smaller light spot imaging device is used for measuring the energy flux density of the large-size receiving face, the system and the method are convenient and reliable and are lower in cost; moreover, the energy flux density and an energy distribution map of all points of the whole receiving face can be obtained. The system and the method are high in precision, low in cost, and easy to operate.

Description

Technical field [0001] The invention relates to the technical field of solar thermal power generation, and in particular to a system and method for measuring the energy flow density on a receiving surface in a solar thermal power generation system. Background technique [0002] The solar thermal power generation system uses heliostats to reflect sunlight onto the receiving surface, and then uses heat transfer media such as water, air, liquid metal or molten salt to convert solar radiation energy into heat energy output by the receiving surface. It can be seen that the receiving surface is The thermal power generation system is responsible for the core component of light-to-heat conversion. The accuracy of the receiving surface energy flow density measurement is of vital importance to the thermal efficiency of the calculation system. So far, the measurement methods of surface energy flux density are mainly divided into two types, namely direct measurement method and indirect meas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K17/00
Inventor 周慧吴小翠付杰徐能
Owner ZHEJIANG SUPCON SOLAR TECHNOLOGY CO LTD
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