Experimental and numerical analysis of the forced draft wet cooling tower

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-04-18 DOI:10.18186/thermal.1285257

N. Lafta, F. Kareem, M. Ghafur

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引用次数: 0

Abstract

Cooling towers are essentially large boxes designed to maximize the evaporation of water. The inlet water temperature and water to air mass flow rate ratio (L/G) significantly affect the performance of the cooling tower. The number of a transfer unit (NTU), Merkel number (Me), Lewis number (Le), and efficiency of the cooling tower define the performance of the forced cooling tower. In this research paper, different inlet water temperatures ranging from 28 °C to 42 °C and (L/G) ranging from 0.5, 1, and 1.5 were used to investigate the performance of the forced cooling tower. Mathematical modeling equations were used to calculate NTU, Me, Le, and efficiency at different inlet water temperatures and (L/G). Engineering equation solver (EES) software was used to solve these mathematical modeling equations. Further, an experimental investigation was carried to find forced cooling tower performance at different inlet water temperatures and (L/G), and results were compared with the theoretical results. The results revealed that increasing the inlet water temperature, NTU, Me, Le, and efficiency increased and were directly related to each other. Further, NTU and efficiency were increased by increasing (L/G). At the same time, the Me and Le reduced with (L/G). Finally, an acceptable and better agreement has been obtained between experimental and theoretical results. Based on obtained results, it has been concluded that higher values of inlet water temperature and (L/G) provided the higher performance of the forced cooling tower.

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强制通风湿式冷却塔的实验与数值分析

冷却塔本质上是设计用来最大限度地蒸发水的大型箱体。进水温度和水与空气质量流量比（L/G）显著影响冷却塔的性能。转移单元的数量（NTU）、Merkel数（Me）、Lewis数（Le）和冷却塔的效率定义了强制冷却塔的性能。在本文中，使用28°C至42°C的不同进水温度和0.5、1和1.5的（L/G）来研究强制冷却塔的性能。数学建模方程用于计算不同进水温度和（L/G）下的NTU、Me、Le和效率。工程方程求解器（EES）软件用于求解这些数学建模方程。此外，还对强制冷却塔在不同进水温度和（L/G）下的性能进行了实验研究，并将结果与理论结果进行了比较。结果表明，随着进水温度的升高，NTU、Me、Le和效率增加，并且相互直接相关。此外，NTU和效率通过增加（L/G）而增加。同时，Me和Le以（L/G）递减。最后，在实验结果和理论结果之间获得了可接受的、更好的一致性。根据所得结果，得出结论：进水温度和（L/G）值越高，强制冷却塔的性能越高。

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.