Performance Enhancement of a Solar Air Collector Using a V-Corrugated Absorber

IF 0.9 Q3 ENGINEERING, AEROSPACE
A. F. Abed, Ruaa Braz Dahham, Noora Abdul Wahid Hashim, R. F. Hamad
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引用次数: 0

Abstract

Solar energy is one of the most efficient forms of renewable energy. Solar air collectors are promising utilization of solar energy. The present study used unsteady three-dimensional Computational Fluid Dynamic (CFD) analysis to investigate the heat transfer and fluid friction in solar air collectors with smooth and v-corrugation absorber plates. The studied parameters are Reynolds number, v-corrugation height, and pitch. Three Reynolds number (500, 1000, 1500) values were used with three arrangements configuration of the v-corrugation of relative heights of 0.10, 0.16, and 0.23. Roughness pitches varied between 1.33, 1.66, and 2. By comparing the simulated thermal efficiency with the currently known experimental values, great agreement can be approved. Results show the superiority of the performance of v-corrugated collector against the traditional or smooth type. The outlet temperature obtained in case of relative roughness height = 0.23 and relative roughness pitch = 2 is 61 °C, while it is 53 °C for a smooth type. Also, a higher thermal efficiency of 46.7 % can be obtained compared to 33.01% for smooth type.
v型瓦楞吸收体对太阳能空气集热器性能的提高
太阳能是最有效的可再生能源之一。太阳能集风器是一种很有前途的太阳能利用技术。采用非定常三维计算流体动力学(CFD)方法研究了光滑板和v型波纹板太阳能集热器的传热和流体摩擦特性。研究参数为雷诺数、v型波纹高度和节距。采用三种雷诺数(500、1000、1500)值,采用相对高度分别为0.10、0.16、0.23的v形波纹三种布置构型。粗糙螺距在1.33、1.66和2之间变化。通过将模拟的热效率与目前已知的实验值进行比较,可以得到非常一致的结果。结果表明,v型波纹型集热器的性能优于传统的或光滑型集热器。相对粗糙度高度= 0.23,相对粗糙度节距= 2时的出口温度为61℃,而光滑型出口温度为53℃。同时,光面型的热效率为33.01%,光面型的热效率为46.7%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
2.00
自引率
0.00%
发文量
16
审稿时长
20 weeks
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