An experimental investigation on thermal and optical analysis of cylindrical and conical cavity copper tube receivers design for solar dish concentrator

被引：53
作者：
Hassan, Atazaz [1 ,2 ]
Chen Quanfang [1 ]
Abbas, Sajid [1 ,2 ]
Lu, Wu [1 ]
Luo Youming [1 ]
机构：
[1] Southwest Jiaotong Univ, Chengdu 610031, Sichuan, Peoples R China
[2] Hamdard Inst Engn & Technol Karachi, Karachi, Pakistan
来源：
RENEWABLE ENERGY | 2021年 / 179卷
关键词：
Solar parabolic dish concentrator; Thermal efficiency; Optical efficiency; Cylindrical and conical cavity tube receivers; Heat loss; COMSOL Multiphysics; PERFORMANCE; COLLECTOR; OPTIMIZATION; SIMULATION; SYSTEM; ENERGY;
D O I：
10.1016/j.renene.2021.07.145
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The receiver is crucial in converting concentrated solar radiation to thermal energy in a solar parabolic dish collector. The most popular type of receiver is a cavity receiver, which reduces heat loss from the body. In this paper, an experimental investigation of the energy, exergy, and optical performance of two cavity-type receivers for a solar parabolic dish concentrator was carried out. The cylindrical and conical cavity tube receivers were designed and tested in the temperature range of 35 degrees C-190 degrees C, with water as the working fluid and a flow rate of 0.83 L per minute. The results showed that the conical cavity tube receiver is the optimum design, while the cylindrical shape is the second choice. The conical cavity tube design achieved 62% average thermal efficiency, 11% exergy efficiency, while the maximum optical efficiency was 82% under average solar irradiation of 865 W/m(2). The overall heat loss coefficients of cylindrical and conical cavity receivers from the stagnation measure were 137 W/m(2) and 125 W/m(2), respectively. The maximum and average surface temperatures for both cylindrical and conical cavity tube receivers were reached at 140 degrees C, 115 degrees C and 155 degrees C, 125 degrees C, respectively. The simulation study was conducted using COMSOL Multiphysics software to investigate the temperature distribution of the receivers. The proposed lightweight conical cavity tube receiver was found to have a high capacity to be used with a solar parabolic dish-style concentrating device to operate heating water applications. (C) 2021 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1849 / 1864
页数：16
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