Comparative Study on Heat Flux and Temperature Distribution Performance of Linear Fresnel Collector Based on Uniformity Index - 文章详情页

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EI Scopus SCIE

摘要：

Linear　Fresnel　collector　system　as　main　solar　energy　collecting　technology　is　widely　studied.　The　secondary　reflector　has　significant　influence　on　the　heat　flux　distribution　on　the　linear　Fresnel　collector.　In　this　work,　the　heat　flux　and　temperature　distribution　on　linear　Fresnel　collector　is　compared　with　different　secondary　reflectors　of　simple　trapezoidal　concentrator,　segmented　parabolic　concentrator　and　compound　parabolic　concentrator　under　varied　incident　ray　angle.　The　uniformity　index　is　applied　to　evaluate　the　Linear　Fresnel　reflector　system　heat　flux　distribution　performance.　The　results　show　that　the　value　of　uniformity　index　increases　with　the　increasing　of　incident　ray　angle.　The　compound　parabolic　concentrator　has　the　highest　value　of　uniformity　index　compared　with　simple　trapezoidal　concentrator　and　segmented　parabolic　concentrator　in　this　work.　The　highest　value　of　uniformity　index　is　0.8137　with　compound　parabolic　concentrator.　This　work　provides　effective　and　practical　guide　to　design　and　evaluate　the　secondary　reflector　in　linear　Fresnel　reflector　system.

关键词：

uniformity index linear Fresnel secondary concentrator heat flux distribution

作者机构：

[ 1 ] [Wu Yuting]Beijing Univ Technol, MOE Key Lab Enhanced Heat Transfer & Energy Conse, Beijing Key Lab Heat Transfer & Energy Convers, Beijing 100124, Peoples R China
[ 2 ] [Qian Li]Beijing Univ Technol, MOE Key Lab Enhanced Heat Transfer & Energy Conse, Beijing Key Lab Heat Transfer & Energy Convers, Beijing 100124, Peoples R China
[ 3 ] [Zhang Cancan]Beijing Univ Technol, MOE Key Lab Enhanced Heat Transfer & Energy Conse, Beijing Key Lab Heat Transfer & Energy Convers, Beijing 100124, Peoples R China
[ 4 ] [Han Songtao]Beijing Univ Technol, MOE Key Lab Enhanced Heat Transfer & Energy Conse, Beijing Key Lab Heat Transfer & Energy Convers, Beijing 100124, Peoples R China
[ 5 ] [Sun Hexin]Beijing Univ Technol, MOE Key Lab Enhanced Heat Transfer & Energy Conse, Beijing Key Lab Heat Transfer & Energy Convers, Beijing 100124, Peoples R China
[ 6 ] [Niu Junnan]Beijing Univ Technol, MOE Key Lab Enhanced Heat Transfer & Energy Conse, Beijing Key Lab Heat Transfer & Energy Convers, Beijing 100124, Peoples R China
[ 7 ] [Cheng Yingkun]Jizhong Energy Jingxing Min Grp Co Ltd, Shijiazhuang 050000, Hebei, Peoples R China
[ 8 ] [Sang Shengjie]Hebeijingkuang New Energy Technol Co Ltd, Shijiazhuang 050100, Hebei, Peoples R China

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zcc@bjut.edu.cn

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