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CLC number: TK01

On-line Access: 2012-05-04

Received: 2011-08-16

Revision Accepted: 2012-02-10

Crosschecked: 2012-03-20

Cited: 3

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Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE A 2012 Vol.13 No.5 P.353-360

http://doi.org/10.1631/jzus.A1100222


Modeling natural convection heat transfer from perforated plates


Author(s):  Zan Wu, Wei Li, Zhi-jian Sun, Rong-hua Hong

Affiliation(s):  Department of Energy Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   zjsun@zju.edu.cn

Key Words:  Staggered pattern perforation, Natural convection, Inclined plate, Parallel plate, Rectangular fins


Zan Wu, Wei Li, Zhi-jian Sun, Rong-hua Hong. Modeling natural convection heat transfer from perforated plates[J]. Journal of Zhejiang University Science A, 2012, 13(5): 353-360.

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T1 - Modeling natural convection heat transfer from perforated plates
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DOI - 10.1631/jzus.A1100222


Abstract: 
staggered pattern perforations are introduced to isolated isothermal plates, vertical parallel isothermal plates, and vertical rectangular isothermal fins under natural convection conditions. The performance of perforations was evaluated theoretically based on existing correlations by considering effects of ratios of open area, inclined angles, and other geometric parameters. It was found that staggered pattern perforations can increase the total heat transfer rate for isolated isothermal plates and vertical parallel plates, with low ratios of plate height to wall-to-wall spacing (H/s), by a factor of 1.07 to 1.21, while only by a factor of 1.03 to 1.07 for vertical rectangular isothermal fins, and the magnitude of enhancement is proportional to the ratio of open area. However, staggered pattern perforations are detrimental to heat transfer enhancement of vertical parallel plates with large H/s ratios.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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