Numerical study on flow and heat transfer performance of a spiral-wound heat exchanger for natural gas

IF 1.8 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Open Physics Pub Date : 2024-02-28 DOI:10.1515/phys-2023-0189

Wang Ya-bin, Ma Yang-fan, Zhang Qian, Zhou Yan, Ma Ting, Shi Yu, Zeng Min

{"title":"Numerical study on flow and heat transfer performance of a spiral-wound heat exchanger for natural gas","authors":"Wang Ya-bin, Ma Yang-fan, Zhang Qian, Zhou Yan, Ma Ting, Shi Yu, Zeng Min","doi":"10.1515/phys-2023-0189","DOIUrl":null,"url":null,"abstract":"The spiral-wound heat exchanger is a key equipment in the liquefied natural gas application, but the flow and heat transfer mechanisms remain unclarified. In this study, a three-dimensional numerical model is created, focusing on exploring the impact of four crucial structural parameters on the flow and heat transfer performance of natural gas, including the external diameter of tubes, the diameter of the core cylinder, the longitudinal pitch of tubes in the same layer, and the radial pitch of tube bundles between the adjacent layer. It was found that the tube diameter, core cylinder diameter, and radial pitch had significant effects on Nu and Δp m. The optimal Nu on the shell side was obtained at medium core cylinder size. The longitudinal pitch had a weak effect on the performance of both sides, and the longitudinal pitch corresponding to the maximum values of Nu and Δp m on both sides increased with the increase in the inlet Reynolds number. Under the effect of centrifugal force, a shifted tendency was shown by the velocity and temperature fields.","PeriodicalId":48710,"journal":{"name":"Open Physics","volume":null,"pages":null},"PeriodicalIF":1.8000,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Open Physics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1515/phys-2023-0189","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

The spiral-wound heat exchanger is a key equipment in the liquefied natural gas application, but the flow and heat transfer mechanisms remain unclarified. In this study, a three-dimensional numerical model is created, focusing on exploring the impact of four crucial structural parameters on the flow and heat transfer performance of natural gas, including the external diameter of tubes, the diameter of the core cylinder, the longitudinal pitch of tubes in the same layer, and the radial pitch of tube bundles between the adjacent layer. It was found that the tube diameter, core cylinder diameter, and radial pitch had significant effects on Nu and Δp m. The optimal Nu on the shell side was obtained at medium core cylinder size. The longitudinal pitch had a weak effect on the performance of both sides, and the longitudinal pitch corresponding to the maximum values of Nu and Δp m on both sides increased with the increase in the inlet Reynolds number. Under the effect of centrifugal force, a shifted tendency was shown by the velocity and temperature fields.

查看原文本刊更多论文

天然气螺旋缠绕式热交换器的流动和传热性能数值研究

螺旋缠绕式换热器是液化天然气应用中的关键设备，但其流动和传热机理仍未阐明。本研究建立了一个三维数值模型，重点探讨了四个关键结构参数对天然气流动和传热性能的影响，包括管子外径、芯筒直径、同层管子纵向间距和相邻层间管束径向间距。结果发现，管子直径、芯筒直径和径向间距对 Nu 和 Δp m 有显著影响。纵向螺距对两侧性能的影响较弱，两侧 Nu 和 Δp m 最大值所对应的纵向螺距随入口雷诺数的增加而增大。在离心力的作用下，速度场和温度场出现了移动趋势。

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分钟内获得全文求助全文

来源期刊

Open Physics PHYSICS, MULTIDISCIPLINARY-

CiteScore

3.20

自引率

5.30%

发文量

审稿时长

18 weeks

期刊介绍： Open Physics is a peer-reviewed, open access, electronic journal devoted to the publication of fundamental research results in all fields of physics. The journal provides the readers with free, instant, and permanent access to all content worldwide; and the authors with extensive promotion of published articles, long-time preservation, language-correction services, no space constraints and immediate publication. Our standard policy requires each paper to be reviewed by at least two Referees and the peer-review process is single-blind.