Heat Transfer Augmentation of Concentrated Solar Absorber Using Modified Surface Contour

IF 1.3 Q3 ENGINEERING, MULTIDISCIPLINARY
R. Senthil, Arvind Chezian, Zackir Hussain Ajmal Arsath
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引用次数: 2

Abstract

This work aims to compare the cavity surface contour’s thermal performance to that of the solar absorber’s plain surface contour for Scheffler type parabolic dish collectors. The absorber is tested for the temperature range up to 600°C without working fluid and 180°C with the working fluid. The modified absorber surface's thermal performance is compared with the flat surface absorber with and without heat transfer fluid. The peak temperature reached by the surface modified absorber (534°C) is about 8.6% more than that of the unmodified absorber (492°C) during an outdoor test without fluid. The energy efficiency of cavity surface absorber and plain surface absorber are 67.65% and 61.84%, respectively. The contoured cavity surface produces a more uniform temperature distribution and a higher heat absorption rate than the plain surface. The results are beneficial to the design of high-temperature solar absorbers for concentrated solar collectors.
利用改进表面轮廓增强聚光太阳能吸收器的传热
本研究旨在比较舍弗勒抛物面碟式集热器的腔面轮廓与太阳能吸收器的平面表面轮廓的热性能。吸收器的测试温度范围可达600°C,无工作流体和180°C,有工作流体。并将改进后的吸收体表面与平面吸收体表面进行了热性能比较。在无流体的室外试验中,表面改性吸收剂达到的峰值温度(534℃)比未改性吸收剂(492℃)高约8.6%。腔面吸收器和平面吸收器的能量效率分别为67.65%和61.84%。轮廓型腔表面比平面表面产生更均匀的温度分布和更高的吸热率。研究结果对聚光太阳能集热器的高温太阳能吸收器的设计具有一定的指导意义。
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来源期刊
CiteScore
2.80
自引率
0.00%
发文量
18
审稿时长
12 weeks
期刊介绍: The IJETI journal focus on the field of engineering and technology Innovation. And it publishes original papers including but not limited to the following fields: Automation Engineering Civil Engineering Control Engineering Electric Engineering Electronic Engineering Green Technology Information Engineering Mechanical Engineering Material Engineering Mechatronics and Robotics Engineering Nanotechnology Optic Engineering Sport Science and Technology Innovation Management Other Engineering and Technology Related Topics.
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