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| 新型纵流油冷却器壳程强化传热 | |
| 引用本文： | 刘世杰,莫逊,涂爱民,朱冬生,谭连元. 新型纵流油冷却器壳程强化传热[J]. 化工进展, 2022, 41(7): 3475-3482. DOI: 10.16085/j.issn.1000-6613.2021-1879 |
| 作者姓名： | 刘世杰 莫逊 涂爱民 朱冬生 谭连元 |
| 作者单位： | 中国科学院广州能源研究所,广东广州510640;中国科学院可再生能源重点实验室,广东广州510640;广东省新能源和可再生能源研究开发与应用重点实验室,广东广州510640;佛山市步鹿节能科技有限公司,广东佛山528000 |
| 基金项目： | 广东省自然科学基金(2020A1515011318);广东省企业科技特派员专项(GDKTP2021047200);佛山市高新区科技创新计划(2020197000618);三水区创新人才团队 |
| 摘 要： | 提出一种新型扭曲三叶管纵流油冷却器强化传热方案，对其壳程的传热与压降特性与扭曲椭圆管油冷却器和传统折流板油冷却器进行了实验对比分析。结果显示，在相同油流量下，扭曲三叶管油冷却器壳程的传热系数、压降和传热系数比压降值（h/?p）分别比传统折流板油冷却器高138.7%～90.5%、19.6%～37.8%和77.2%～130.4%；分别比扭曲椭圆油冷却器高257.8%～298.6%、140.5%～158.4%和40.1%～65.7%，表明扭曲三叶管油冷却器具有很好的强化传热效果。并对其强化传热机理进行了分析，在壳程雷诺数（Re）为80～550的范围内，拟合获得了扭曲三叶管和扭曲椭圆管两种纵流油冷却器壳程努塞尔数（Nu）和摩擦因子（f）关联式。 |
| 关 键 词： | 低雷诺数 纵流换热器 扭曲三叶管 油冷却器 强化传热 |
| 收稿时间： | 2021-09-02 |
Shell-side heat transfer enhancement of a novel longitudinal flow oil cooler |
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| LIU Shijie,MO Xun,TU Aimin,ZHU Dongsheng,TAN Lianyuan. Shell-side heat transfer enhancement of a novel longitudinal flow oil cooler[J]. Chemical Industry and Engineering Progress, 2022, 41(7): 3475-3482. DOI: 10.16085/j.issn.1000-6613.2021-1879 | |
| Authors: | LIU Shijie MO Xun TU Aimin ZHU Dongsheng TAN Lianyuan |
| Affiliation: | 1.Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China 2.CAS Key Laboratory of Renewable Energy, Guangzhou 510640, Guangdong, China 3.Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, Guangdong, China 4.Foshan Bulu Energy Saving Technology Co. , Ltd. , Foshan 528000, Guangdong, China |
| Abstract: | In this paper, a heat transfer enhancement scheme for the novel twisted trifoliate tube longitudinal flow oil cooler was proposed. The heat transfer and pressure drop performance of the shell side of twisted trifoliate tube oil cooler was experimentally investigated and compared to the twisted oval tube oil cooler and conventional segmental baffle oil cooler. The experimental results showed that under the same oil flow rate, the shell-side heat transfer coefficient, pressure drop and h/?p of the twisted trifoliate tube oil cooler were 138.7%—190.5%, 19.6%—37.8% and 77.2%—130.4% higher than that of the conventional segmental baffle oil cooler, and were 257.8%—298.6%, 140.5%—158.4% and 40.1%—65.7% higher than that of the twisted elliptical tube oil cooler, respectively. The results proved the twisted trifoliate tube oil cooler had a good heat transfer enhancement effect. The mechanism of heat transfer enhancement was also analyzed. Based on the experimental data, the correlations of Nu and f on the shell side of twisted trifoliate tube and twisted oval tube oil cooler were deduced with Re ranging from 80 to 550. |
| Keywords: | low Re longitudinal flow heat exchanger twisted trifoliate tube oil cooler heat transfer enhancement |
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