The optimal geometric design of a v-corrugated absorber solar air heater integrated with twisted tape insert

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-04-18 DOI:10.18186/thermal.1285214

Issam M. Ali Aljubury, Mohammed Khalil Hussain, Ammar A. Farhan

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引用次数: 1

Abstract

The proper design of a solar air heater depends on the highest thermal performance of the solar collector. In the present paper, proposed a method to find an optimal dimension of V-corrugated absorber solar air heater (VSAH) combined with a twisted tape insert (TTI). The design variables of the VSAH-TTI are length, width, number of channels, and twisted tape ratio. The effect of each design variable is examined and studied under various ranges of Reynolds number (Re). Given the complexity in changing design variables of solar collector having a V-corrugated absorbing plate with twisted tape insert (VSAH -TTI) to find the highest thermal performances, the multi-objective function genetic algorithm is used to find the optimal dimensions of VSAH-TTI based on maximizing the heat gain, thermal and effective efficiency as well as minimizing the pressure drop on solar collector. The range of each design variable of the VSAH-TTI by means of length (1 – 2.5 m), width (0.5 – 1.5 m), number of channels (4 – 14), and twisted tape ratio (1 – 8) are specified in paper based on the most common practical values of the solar collector. The results showed for the case under study that each design variable of VSAH-TTI affect the thermal performance and the optimized geometry by using a genetic algorithm (Ga) can find the optimal geometric dimensions of VSAH-TTI. The optimal dimension by using Ga can increase the heat gain by more than 8% and increase the effective and thermal efficiency of more than 7% for the original geometry. Furthermore, the optimized geometry can reduce more than 29% for the original geometry. These improvements in optimized geometry for VSAH- TTI without introducing any additional items.

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v型波纹吸收式扭带式太阳能空气加热器的优化几何设计

太阳能空气加热器的正确设计取决于太阳能收集器的最高热性能。本文提出了一种V型波纹吸收式太阳能空气加热器（VSAH）与扭带插件（TTI）相结合的最佳尺寸求解方法。VSAH-TTI的设计变量包括长度、宽度、通道数和双绞线带比。在雷诺数（Re）的不同范围内，对每个设计变量的影响进行了检查和研究。考虑到改变具有带扭带插件的V形波纹吸收板（VSAH-TTI）的太阳能集热器的设计变量以获得最高热性能的复杂性，使用多目标函数遗传算法在最大化热增益的基础上找到VSAH-TTI的最佳尺寸，热效率和有效效率以及最小化太阳能收集器上的压降。VSAH-TTI的每个设计变量的长度（1–2.5 m）、宽度（0.5–1.5 m）、通道数量（4–14）和扭带比（1–8）范围在论文中根据太阳能收集器的最常见实用值进行了规定。结果表明，对于所研究的情况，VSAH-TTI的每个设计变量都会影响热性能，并且通过使用遗传算法（Ga）可以找到VSAH-TTI的最佳几何尺寸。使用Ga的最佳尺寸可以使热增益增加8%以上，并使原始几何形状的有效效率和热效率增加7%以上。此外，优化后的几何形状可以比原始几何形状减少29%以上。这些改进优化了VSAH-TTI的几何结构，而没有引入任何额外的项目。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.