Distribution characteristics of heat flux density of dish solar collectors

LI Shaohua; WANG Liwei; LIAO Mingjun; WANG Yanjuan

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Distribution characteristics of heat flux density of dish solar collectors

更新时间：2025-09-28

- Distribution characteristics of heat flux density of dish solar collectors
- Thermal Power Generation Vol. 46, Issue 9, Pages: 78-82(2017)
- 作者机构：
  
  华北电力大学能源动力与机械工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK513.1
- Published：2017
- 稿件说明：
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LI Shaohua, WANG Liwei, LIAO Mingjun, et al. Distribution characteristics of heat flux density of dish solar collectors[J]. Thermal power generation, 2017, 46(9): 78-82.
DOI：

LI Shaohua, WANG Liwei, LIAO Mingjun, et al. Distribution characteristics of heat flux density of dish solar collectors[J]. Thermal power generation, 2017, 46(9): 78-82. DOI：

摘要

为了研究散射误差对碟式太阳能聚光性能的影响

采用蒙特卡罗光线跟踪法对碟面聚光反射进行了计算;分析反射光聚集到集热器端面的热流密度分布情况;对比了散射误差为1.75、2.50、5.00、10.00 mrad时的热流密度分布差异。结果表明:热流密度在集热器端面分布均匀

中心点密度高且热流密度接近圆形分布;随着碟式抛物面聚光镜散射误差的增大

集热器端面热流密度的分布趋于分散;热流密度与聚光特性成正比

热流密度越小

碟式太阳能聚光器聚光性能越差。

Abstract

In order to study the effect of scattering error on concentrating performance of dish solar energy collector

the Monte Carlo ray-tracing method was used to calculate the concentrating reflection.The distribution of heat flux of the reflected light to the collector end face is studied

and the heat flow density distribution differences when the scattering error is 1.75 mrad

2.50 mrad

5.00 mrad and 10.00 mrad were compared.The result indicates that

at the collector end

the heat flux density is close to the circular distribution.With the increasing scattering error

the distribution of the heat flux distribution tends to disperse.The lower the heat flux

the worse the condenser performance.

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