Heat transfer characteristics of the air-oil heat exchanger with spiral tube

IF 1.2 4区工程技术 Q3 ENGINEERING, MECHANICAL Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy Pub Date : 2024-02-27 DOI:10.1177/09576509241237006

Zhihai Kou, Baolin Cao, Qi Zhang, Binbin Li, Guangchao Li, Xunyan Yin

{"title":"Heat transfer characteristics of the air-oil heat exchanger with spiral tube","authors":"Zhihai Kou, Baolin Cao, Qi Zhang, Binbin Li, Guangchao Li, Xunyan Yin","doi":"10.1177/09576509241237006","DOIUrl":null,"url":null,"abstract":"The cooling problem of hot-end components has become an important factor restricting the aero-engine performance, life and reliability. In order to improve the cooling quality of the cooling air, the supercritical aviation kerosene was used as a heat sink to cool the cooling air in a spiral heat exchanger. The flow and heat transfer process of the air-oil heat exchanger with spiral tube were numerically simulated using Fluent software. The flow and heat transfer situation of air and aviation kerosene were analyzed in detail. The optimized spiral heat exchanger with the diaphragm was presented to enhance the heat transfer capacity of the air side. It is found that the heat transfer performance of the air-oil heat exchanger is greatly enhanced by the spiral tube due to the secondary flow effect. With the increase in the turning angle of the spiral tube, the effect of the secondary flow for the heat transfer enhancement is strengthened. The PEC index of the spiral heat exchanger increases with the increase in the air flow rate. The spiral heat exchanger with the diaphragm can effectively improve the heat transfer performance of the heat exchanger, and increase the PEC index of the air side by more than 20%.","PeriodicalId":20705,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy","volume":"3 1","pages":""},"PeriodicalIF":1.2000,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1177/09576509241237006","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}

引用次数: 0

Abstract

The cooling problem of hot-end components has become an important factor restricting the aero-engine performance, life and reliability. In order to improve the cooling quality of the cooling air, the supercritical aviation kerosene was used as a heat sink to cool the cooling air in a spiral heat exchanger. The flow and heat transfer process of the air-oil heat exchanger with spiral tube were numerically simulated using Fluent software. The flow and heat transfer situation of air and aviation kerosene were analyzed in detail. The optimized spiral heat exchanger with the diaphragm was presented to enhance the heat transfer capacity of the air side. It is found that the heat transfer performance of the air-oil heat exchanger is greatly enhanced by the spiral tube due to the secondary flow effect. With the increase in the turning angle of the spiral tube, the effect of the secondary flow for the heat transfer enhancement is strengthened. The PEC index of the spiral heat exchanger increases with the increase in the air flow rate. The spiral heat exchanger with the diaphragm can effectively improve the heat transfer performance of the heat exchanger, and increase the PEC index of the air side by more than 20%.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

螺旋管空气-油热交换器的传热特性

热端部件的冷却问题已成为制约航空发动机性能、寿命和可靠性的重要因素。为了提高冷却空气的冷却质量，采用超临界航空煤油作为散热器，在螺旋换热器中冷却冷却空气。使用 Fluent 软件对螺旋管空气-油热交换器的流动和传热过程进行了数值模拟。详细分析了空气和航空煤油的流动和传热情况。提出了带有隔膜的优化螺旋换热器，以提高空气侧的传热能力。研究发现，由于二次流效应，螺旋管大大提高了空气-油热交换器的传热性能。随着螺旋管转角的增大，二次流对传热增强的作用得到加强。螺旋换热器的 PEC 指数随空气流速的增加而增加。带隔膜的螺旋换热器能有效改善换热器的传热性能，使空气侧的 PEC 指数提高 20% 以上。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 工程技术-工程：机械

CiteScore

3.30

自引率

5.90%

发文量

114

审稿时长

5.4 months

期刊介绍： The Journal of Power and Energy, Part A of the Proceedings of the Institution of Mechanical Engineers, is dedicated to publishing peer-reviewed papers of high scientific quality on all aspects of the technology of energy conversion systems.