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공공누리This item is licensed Korea Open Government License

Title
Heat transfer characteristics of a short helical plate in a horizontal circular tube
Author(s)
장태현이창환김상민이권수
Publisher
Korean Society of Mechnical Engineers
Publication Year
2019-09-09
Abstract
Enhancement techniques based on artificial roughness are used in numerous applications of heat exchangers. Heat exchange devices are essential components in complex engineering systems, such as industrial energy generation and energy conversion. In this study, a short helical plate was used to enhance heat transfer in a horizontal circular annulus tube. Experiments and CFD were performed to study the heat transfer effect of the helical plate, and Teflon and brass materials were used for the helical plate. Uniform heat flux was considered, and particle image velocimetry (PIV) was used for comparisons. The Nusselt number profiles increased steeply around the Teflon helical plate and decreased suddenly to 1.0 along the test section.
Keyword
Annulus; Helical plate; Swirling flow; Nusselt number; PIV
Journal Title
Journal of mechanical science and technology;
Citation Volume
33
ISSN
1738-494x
DOI
10.1007/s12206-019-0701-7
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Appears in Collections:
7. KISTI 연구성과 > 학술지 발표논문
URI
https://repository.kisti.re.kr/handle/10580/16304
Fulltext
 https://scienceon.kisti.re.kr/srch/selectPORSrchArticle.do?cn=NART107667799
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