以R1234-yf和乙醇为工质的无芯热管换热器优化设计

International Journal of Applied Science and Engineering Pub Date : 2023-01-01 DOI:10.6703/ijase.202309_20(3).004

Osamah R. Alkhafaj, Nabil J. Yasin, Audai H. Al-abbas

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引用次数: 0

摘要

本实验研究在无芯热管中使用R1234-yf和乙醇作为工质，空气流经热交换器管道。热风温度分别设定为50℃、55℃和60℃，冷空气温度设定为20℃。冷热气流的泵送雷诺数从2583到20664不等。无芯热管垂直布置，填充率分别为20%、40%、60%、80%和100%。结果表明:当填充比为60%、工作流体为乙醇、雷诺数为10332时，无芯热管换热器的热工性能最佳，为0.181;此外，本文还提出了一种预测无芯热管换热器整体热性能的新方法，预测结果与实验结果吻合较好

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Optimization of wickless heat pipe heat exchanger using R1234-yf and ethanol as working fluids

This experimental study investigates the use of R1234-yf and ethanol as working fluids in a wickless heat pipe, with air flowing through the heat exchanger ducts. The hot air temperatures were set at 50°C, 55°C and 60°C, while the cold air temperature was fixed at 20°C. Both hot and cold air streams were pumped with Reynolds numbers ranging from 2583 to 20664. The wickless heat pipe was oriented vertically and filled with varying filling ratios of 20%, 40%, 60%, 80% and 100%. The results demonstrate that the wickless heat pipe - heat exchanger achieved the best thermal performance of 0.181 at a filling ratio of 60%, using ethanol as the working fluid and a Reynolds number of 10332. Additionally, a novel approach is proposed to predict the overall thermal performance of the wickless heat pipe - heat exchanger

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来源期刊

International Journal of Applied Science and Engineering Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)

CiteScore

2.90

自引率

0.00%

发文量

期刊介绍： IJASE is a journal which publishes original articles on research and development in the fields of applied science and engineering. Topics of interest include, but are not limited to: - Applied mathematics - Biochemical engineering - Chemical engineering - Civil engineering - Computer engineering and software - Electrical/electronic engineering - Environmental engineering - Industrial engineering and ergonomics - Mechanical engineering.