Numerical Simulation of a Trapezoidal Cavity Absorber for a Linear Fresnel Reflector

被引：0
|
作者：
Lai, Yanhua [1 ]
Che, Shuping [1 ]
Lu, Mingxin [1 ]
Dong, Zhen [1 ]
Song, Gu [1 ]
Ma, Chunyuan [1 ]
机构：
[1] Shandong Univ, Sch Energy & Power Engn, Jinan 250100, Peoples R China
来源：
2013 INTERNATIONAL CONFERENCE ON MATERIALS FOR RENEWABLE ENERGY AND ENVIRONMENT (ICMREE), VOLS 1-3 | 2013年
关键词：
linear Fresnel reflector; trapezoidal cavity absorber; glass window; simulation model;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A trapezoidal cavity absorber for a linear Fresnel reflector concentrator is analyzed and optimized via CFD simulation. The heat loss coefficient is introduced, the influence of ambient temperature, absorber temperature, cavity depth, inclination of side walls, insulation thickness, glass window and emissivity of selective absorption coating have been studied. The results show that radiation dominate the cavity heat loss, and heat loss through the glass window is higher than through the insulation layer; among these factors, impact of emissivity of selective absorption coating and insulation layer are greater than the other factors. In this work, cavity with a 100mm depth shows the best thermal performance.
引用
收藏
页码：89 / 93
页数：5
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