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Particle concentrated radiation absorption characteristic measuring device and measuring method thereof

A radiation absorption and measurement method technology, applied in the direction of measuring devices, particle and sedimentation analysis, instruments, etc., can solve the problems that can only be applied to static samples at room temperature and are difficult to apply, so as to achieve accurate absorption rate, real results, and improved The effect of heat absorption efficiency

Pending Publication Date: 2020-06-23
ZHEJIANG UNIV
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Problems solved by technology

At present, the measurement of the radiation absorption characteristics of samples is generally carried out by means of spectrometers (such as Fabry-Perot interferometers, Fourier transform infrared spectrometers), integrating spheres and other instruments, but these measurements are often only applicable to static at room temperature. sample, which is difficult to apply to some devices that need to know the radiation absorption characteristics of high-temperature moving samples, such as high-temperature particle absorbers, so a method for the radiation absorption characteristics of particles in solar high-temperature particle absorbers Measurement methods

Method used

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  • Particle concentrated radiation absorption characteristic measuring device and measuring method thereof
  • Particle concentrated radiation absorption characteristic measuring device and measuring method thereof
  • Particle concentrated radiation absorption characteristic measuring device and measuring method thereof

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Embodiment approach 1

[0065] The first embodiment of the present invention provides a method for measuring the absorption characteristics of concentrated radiation of particles, see figure 1 with figure 2 As shown, it is used to test the radiation absorption characteristics of the particle 5 in the heat absorber when it is in motion, including the following steps:

[0066] Step S1: adjusting and keeping the output light in the first wavelength and light intensity state;

[0067] Step S2: Detect and obtain the spectral reflectance ρ r (λ) The output response signal S of the reflected light of the reference standard sample r (λ);

[0068] Step S3: Add background 4 and heat background 4 to T bp , detect the output response signal S of the reflected light of the background 4 b (λ);

[0069] Step S4: collecting image information at background 4;

[0070] Step S5: Add particle 5 and heat background 4 and particle 5 to T bp , drive the particle 5 to move, and detect the output response signal S o...

Embodiment approach 2

[0141] The second embodiment of the present invention provides a device for measuring particle concentrating radiation absorption characteristics. Compared with the first embodiment, the second embodiment is a different embodiment based on the same principle, and the parts not specifically described include the accompanying drawings The signs and text descriptions are the same as those of the first embodiment, and will not be repeated here.

[0142] The main difference between the second embodiment and the first embodiment is that, in the second embodiment of the present invention, the combination Figure 9 with Figure 10It can be seen that the heat absorber in the second embodiment is a curtain-type high-temperature particle heat absorber, and the particles 5 in the second embodiment fall freely under the action of gravity and circulate under the drive of the transmission mechanism 8 . Preferably, the transmission mechanism 8 in the second embodiment also adopts pneumatic c...

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Abstract

The invention relates to the technical field of solar thermal power generation, in particular to a particle concentrated radiation absorption characteristic measuring device and a measuring method thereof. The invention provides a measuring device and a measuring method. An output response signal Sr([lambda]) of reflected light of a reference standard sample with known spectral reflectivity, an output response signal Sb([lambda]) of reflected light of a background and an image signal can be respectively measured; then the motion form of the particles in the heat absorber is simulated and the output response signal Sbp([lambda]) and the image signal of the background and the reflected light of the particles at the moment are detected; and according to the detected data of the three output response signals Sr([lambda]), Sb([lambda]) and Sbp([lambda]) and the average background ratio Pb obtained by calculating the two times of image information processing, the absorptivity [alpha]p([lambda], Tbp) of the particles is obtained through calculation, and therefore the radiation absorption characteristic of the particles in the heat absorber in the moving state is obtained. The formula (1)is scientific and reasonable, and the absorptivity of the particles calculated by the formula (1) is more accurate.

Description

technical field [0001] The invention relates to the technical field of solar thermal power generation, in particular to a device for measuring particle concentrating radiation absorption characteristics and a measurement method thereof. Background technique [0002] The solar energy is widely distributed, and the radiant energy reaching the earth's surface reaches 3×10 21 kJ, about 5,000 times the total global energy consumption. Solar thermal power generation has a stable output and high efficiency, and can be used as a base load and peak-shaving power source, with great development potential. According to the forecast of the International Energy Agency, the installed capacity of solar thermal power generation in the world is expected to reach 1 billion kilowatts in 2050, accounting for 11% of the world's total power generation. According to my country's "Thirteenth Five-Year Plan for Electric Power Development", the installed capacity of solar thermal power generation in...

Claims

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Application Information

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IPC IPC(8): G01N15/00
CPCG01N15/00G01N2015/03
Inventor 肖刚谢翔宇倪明江岑可法骆仲泱周劲松
Owner ZHEJIANG UNIV
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