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Investigating subcooled flow boiling heat transfer and fluid dynamics within a shell-and-plate heat exchanger

摘要:The study experimentally investigates subcooled flow boiling in a single channel of a shell-and-plate heat exchanger. Experiments on single-phase and boiling heat transfer were conducted under varying mass flux (61.442 to 199.326 kg/m2 & sdot;s), preheating (20 to 42 degrees C), and heating temperatures (30 to 60 degrees C), using the refrigerant R365mfc. Key findings include that microscale boiling is the dominant heat transfer mechanism, with macroscale boiling occurring at high mass flux and preheating temperatures. The boiling heat transfer coefficient and friction pressure drop increase with mass flux, while optimal heat transfer occurs with an inlet subcooling of 4-6 degrees C. Flow patterns-bubbly, bubbly-slug, and churn flows-were identified, with bubbly flow offering superior heat transfer performance at the cost of higher pressure drop. The prediction model for friction pressure drop and heat transfer coefficient, using the Weber and boiling numbers, shows a prediction error within +/- 20 % of experimental data.

关键字:Subcooled flow boiling; Shell-and-plate heat exchangers; Heat transfer; Pressure drop; Flow pattern

ISSN号:1359-4311

卷、期、页:卷258子辑B

发表日期:2025-01-01

影响因子:0.000000

期刊分区(SCI为中科院分区):二区

收录情况:SCI(科学引文索引印刷版),SCIE(科学引文索引网络版)

发表期刊名称:APPLIED THERMAL ENGINEERING

参与作者:吴鹏飞

通讯作者:彭一洲

第一作者:王科,陈举

论文类型:期刊论文

论文概要:王科,彭一洲,陈举,吴鹏飞,Investigating subcooled flow boiling heat transfer and fluid dynamics within a shell-and-plate heat exchanger,APPLIED THERMAL ENGINEERING,2025,卷258子辑B

论文题目:Investigating subcooled flow boiling heat transfer and fluid dynamics within a shell-and-plate heat exchanger

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