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强化传热期刊
影响因子: 0.562 5年影响因子: 0.605 SJR: 0.175 SNIP: 0.361 CiteScore™: 0.33

ISSN 打印: 1065-5131
ISSN 在线: 1026-5511

强化传热期刊

DOI: 10.1615/JEnhHeatTransf.v11.i4.120
pages 341-346

Research on Twisted Strip with Asymmetric Oblique Teeth

Tianlan Yu
Mechanical Clean Institute, Zhuzhou Institute of Technology, Zhuzhou, 412008, HuNan, China
Deqi Peng
Mechanical Clean Institute, Zhuzhou Institute of Technology, Zhuzhou, 412008, HuNan, China
Xiumin Yu
Mechanical Clean Institute, Zhuzhou Institute of Technology, Zhuzhou, 412008, HuNan, China

ABSTRACT

An improvement is made on the previously engineered smooth twisted plastic strip technology to enlarge the usually small self-rotating force moment of the plastic strip. Oblique teeth are added to both surfaces of the smooth twisted plastic strip asymmetrically at equal intervals. This increases the total force moment by 75 ~ 101%. Furthermore, the heat transfer coefficient is raised by 186% on average because strong vortices are induced behind the teeth. Although the coefficient of flow resistance is high, the flow velocity is low, and the overall flow resistance is still in the acceptable range for industrial usage.


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