Real‐time thermal states monitoring of absorber tube for parabolic trough solar collector with non‐uniform solar flux

Summary With the world energy shortage problem becoming increasingly prominent, more and more attentions have been paid to the development of renewable energies. Among these sources, solar energy has received extensive attention with its excellent characteristics. The thermal state affects the safet...

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Bibliographic Details
Published in:International journal of energy research Vol. 42; no. 2; pp. 707 - 719
Main Authors: Wang, Xudong, Zhang, Daqian, Zhang, Lihui, Jiang, Chuan
Format: Journal Article
Language:English
Published: Bognor Regis John Wiley & Sons, Inc 01.02.2018
Subjects:
absorber tube
Absorbers
Adaptive filters
Energy shortages
Fluctuations
Heat
Heat flux
Heat transfer
inverse analysis
Kalman filters
Mathematical models
Monitoring
parabolic trough solar collector
Real time
real‐time monitoring
Renewable energy
Solar collectors
Solar energy
Solar flux
Temperature distribution
Temperature fields
thermal states
ISSN:0363-907X, 1099-114X
Online Access:Get full text
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Summary:Summary With the world energy shortage problem becoming increasingly prominent, more and more attentions have been paid to the development of renewable energies. Among these sources, solar energy has received extensive attention with its excellent characteristics. The thermal state affects the safety of the solar heat collection system. In this paper, real‐time monitoring of the input heat flux on the inside wall and the temperature field simultaneously of an absorber tube for parabolic trough solar collector were studied. Based on the measured temperatures on the outside wall, the fuzzy adaptive Kalman filter coupled with weighted recursive least squares algorithm (WRLSA) was employed to monitor the heat states of the absorber tube inversely, in which WRLSA was used to acquire the heat flux while fuzzy adaptive Kalman filter was adopted to monitor the temperature field. The method showed strong robustness to resist the ill‐posedness. Accurate monitoring results also can be acquired when there are random disturbances of the heat transfer condition on the inner wall.
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ISSN:0363-907X
1099-114X
DOI:10.1002/er.3856