Reducing convective heat losses in solar dish cavity receivers through a modified air-curtain system

Song Yang; Jun Wang; Peter D. Lund; Siyu Wang; Chuan Jiang

doi:10.1016/j.solener.2018.03.027

Reducing convective heat losses in solar dish cavity receivers through a modified air-curtain system

Song Yang^*, Jun Wang, Peter D. Lund, Siyu Wang, Chuan Jiang

^*Corresponding author for this work

Southeast University, Nanjing

Research output: Contribution to journal › Article › Scientific › peer-review

39 Citations (Scopus)

Abstract

Here we propose a forced air circulation system to reduce the convective heat loss across the aperture of a dish concentrator. The function of the proposed system was validated with computational fluid dynamics (CFD) simulations. Compared to a concentrator without such a system, the modified solar dish cavity receiver could clearly reduce the convective heat loss and its fluctuation in the receiver. In the best case studied, the convective heat losses could be suppressed by up to 58%. In addition, two types of air circulation modes (clockwise and anticlockwise) were compared, showing that the anticlockwise mode yields better performance.

Original language	English
Pages (from-to)	50-58
Number of pages	9
Journal	Solar Energy
Volume	166
DOIs	https://doi.org/10.1016/j.solener.2018.03.027
Publication status	Published - 15 May 2018
MoE publication type	A1 Journal article-refereed

Keywords

Air circulation system
Concentrator
Convective losses
Parabolic dish

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.solener.2018.03.027

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title = "Reducing convective heat losses in solar dish cavity receivers through a modified air-curtain system",

abstract = "Here we propose a forced air circulation system to reduce the convective heat loss across the aperture of a dish concentrator. The function of the proposed system was validated with computational fluid dynamics (CFD) simulations. Compared to a concentrator without such a system, the modified solar dish cavity receiver could clearly reduce the convective heat loss and its fluctuation in the receiver. In the best case studied, the convective heat losses could be suppressed by up to 58%. In addition, two types of air circulation modes (clockwise and anticlockwise) were compared, showing that the anticlockwise mode yields better performance.",

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author = "Song Yang and Jun Wang and Lund, {Peter D.} and Siyu Wang and Chuan Jiang",

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T1 - Reducing convective heat losses in solar dish cavity receivers through a modified air-curtain system

AU - Yang, Song

AU - Wang, Jun

AU - Lund, Peter D.

AU - Wang, Siyu

AU - Jiang, Chuan

PY - 2018/5/15

Y1 - 2018/5/15

N2 - Here we propose a forced air circulation system to reduce the convective heat loss across the aperture of a dish concentrator. The function of the proposed system was validated with computational fluid dynamics (CFD) simulations. Compared to a concentrator without such a system, the modified solar dish cavity receiver could clearly reduce the convective heat loss and its fluctuation in the receiver. In the best case studied, the convective heat losses could be suppressed by up to 58%. In addition, two types of air circulation modes (clockwise and anticlockwise) were compared, showing that the anticlockwise mode yields better performance.

AB - Here we propose a forced air circulation system to reduce the convective heat loss across the aperture of a dish concentrator. The function of the proposed system was validated with computational fluid dynamics (CFD) simulations. Compared to a concentrator without such a system, the modified solar dish cavity receiver could clearly reduce the convective heat loss and its fluctuation in the receiver. In the best case studied, the convective heat losses could be suppressed by up to 58%. In addition, two types of air circulation modes (clockwise and anticlockwise) were compared, showing that the anticlockwise mode yields better performance.

KW - Air circulation system

KW - Concentrator

KW - Convective losses

KW - Parabolic dish

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M3 - Article

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SN - 0038-092X

VL - 166

SP - 50

EP - 58

JO - Solar Energy

JF - Solar Energy

ER -

Reducing convective heat losses in solar dish cavity receivers through a modified air-curtain system

Abstract

Keywords

UN SDGs

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