Performance of meta-material thermal concentrator with sensu-shaped structure through entropy generation approach

A meta-material thermal concentrator model was simulated with different operating modes and different constructions based on sensu-shaped unit. The temperature and entropy generation rate was obtained by transient calculation. Thermal concentration ratio was defined with temperature and entropy prod...

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Bibliographic Details
Published in:Thermal science 2016, Vol.20 (suppl. 3), p.651-658
Main Authors: Wang, Jiao-Long, Zhang, Hao-Chun, Ma, Chao, Su, Cheng-Shuai, Shen, Han, Xie, Gong-Nan
Format: Article
Language:English
Subjects:
Computer simulation
Concentrators
Entropy
Metamaterials
Performance evaluation
Temperature gradients
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Summary:A meta-material thermal concentrator model was simulated with different operating modes and different constructions based on sensu-shaped unit. The temperature and entropy generation rate was obtained by transient calculation. Thermal concentration ratio was defined with temperature and entropy production rate, which was used to analyze and evaluate performance. Thermal concentration ratio had the biggest value and thermal concentrator had the best effect at initial stage of the process. A larger temperature difference or smaller center distance leaded to better thermal control effect. nema
ISSN:0354-9836
2334-7163
DOI:10.2298/TSCI16S3651W