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Mechanical Properties and Heat Transfer Performance of Conically Corrugated Tube
Conically corrugated tube is a new type of high-efficiency heat exchange tube. In this paper, the mechanical and heat transfer properties of conically corrugated tubes formed by the cold rolling of smooth tubes are studied through experimental measurement and numerical simulation to lay the foundati...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8432666/ https://www.ncbi.nlm.nih.gov/pubmed/34500994 http://dx.doi.org/10.3390/ma14174902 |
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author | Wu, Zhiwei Qian, Caifu Liu, Gang Liu, Zhisheng Sheng, Ping |
author_facet | Wu, Zhiwei Qian, Caifu Liu, Gang Liu, Zhisheng Sheng, Ping |
author_sort | Wu, Zhiwei |
collection | PubMed |
description | Conically corrugated tube is a new type of high-efficiency heat exchange tube. In this paper, the mechanical and heat transfer properties of conically corrugated tubes formed by the cold rolling of smooth tubes are studied through experimental measurement and numerical simulation to lay the foundations for applying the tubes in heat exchangers. The results show that while conically corrugated tube has a lower axial elastic stiffness compared with smooth tube, conically corrugated tube has a higher yield strength and ultimate strength. Unlike smooth tubes, conically corrugated tubes develop three-dimensional stresses when an axial tensile load is applied to them. In addition, the heat transfer coefficient of conically corrugated tube is 15%, 17%, and 115% higher than that of spiral grooved tube, convergent divergent tube, and smooth tube, respectively. Finally, the correlation equations of the axial stress concentration factor, stiffness equivalent coefficient, Nusselt number, and flow resistance coefficient of conically corrugated tubes are obtained for engineering application. |
format | Online Article Text |
id | pubmed-8432666 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-84326662021-09-11 Mechanical Properties and Heat Transfer Performance of Conically Corrugated Tube Wu, Zhiwei Qian, Caifu Liu, Gang Liu, Zhisheng Sheng, Ping Materials (Basel) Article Conically corrugated tube is a new type of high-efficiency heat exchange tube. In this paper, the mechanical and heat transfer properties of conically corrugated tubes formed by the cold rolling of smooth tubes are studied through experimental measurement and numerical simulation to lay the foundations for applying the tubes in heat exchangers. The results show that while conically corrugated tube has a lower axial elastic stiffness compared with smooth tube, conically corrugated tube has a higher yield strength and ultimate strength. Unlike smooth tubes, conically corrugated tubes develop three-dimensional stresses when an axial tensile load is applied to them. In addition, the heat transfer coefficient of conically corrugated tube is 15%, 17%, and 115% higher than that of spiral grooved tube, convergent divergent tube, and smooth tube, respectively. Finally, the correlation equations of the axial stress concentration factor, stiffness equivalent coefficient, Nusselt number, and flow resistance coefficient of conically corrugated tubes are obtained for engineering application. MDPI 2021-08-28 /pmc/articles/PMC8432666/ /pubmed/34500994 http://dx.doi.org/10.3390/ma14174902 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Wu, Zhiwei Qian, Caifu Liu, Gang Liu, Zhisheng Sheng, Ping Mechanical Properties and Heat Transfer Performance of Conically Corrugated Tube |
title | Mechanical Properties and Heat Transfer Performance of Conically Corrugated Tube |
title_full | Mechanical Properties and Heat Transfer Performance of Conically Corrugated Tube |
title_fullStr | Mechanical Properties and Heat Transfer Performance of Conically Corrugated Tube |
title_full_unstemmed | Mechanical Properties and Heat Transfer Performance of Conically Corrugated Tube |
title_short | Mechanical Properties and Heat Transfer Performance of Conically Corrugated Tube |
title_sort | mechanical properties and heat transfer performance of conically corrugated tube |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8432666/ https://www.ncbi.nlm.nih.gov/pubmed/34500994 http://dx.doi.org/10.3390/ma14174902 |
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