Heat transfer and entropy generation in a parabolic trough receiver with wall-detached twisted tape inserts
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- 作者：Aggrey Mwesigyea ; Tunde Bello-Ochendeb ; tunde.bello-ochende@uct.ac.za" class="auth_mail" title="E-mail the corresponding author ; Josua P. Meyerc ; josua.meyer@up.ac.za" class="auth_mail" title="E-mail the corresponding author
- 关键词：Entropy generation ; Fluid friction ; Heat transfer performance ; Parabolic trough receiver ; Twist ratio ; Width ratio
- 刊名：International Journal of Thermal Sciences
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：99
- 期：Complete
- 页码：238-257
- 全文大小：3388 K
文摘
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Study on the use twisted tape inserts in a parabolic trough receiver is presented.
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Use of twisted tape inserts significantly improves receiver thermal performance.
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Receiver thermal efficiency increases up to 10% with twisted tape inserts.
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At larger Reynolds numbers use of inserts degrades receiver thermodynamic performance.
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Entropy generation rates reduce up to 58% with the use twisted tape inserts.