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


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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%T Modeling natural convection heat transfer from perforated plates
%A Zan Wu
%A Wei Li
%A Zhi-jian Sun
%A Rong-hua Hong
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%I Zhejiang University Press & Springer
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T1 - Modeling natural convection heat transfer from perforated plates
A1 - Zan Wu
A1 - Wei Li
A1 - Zhi-jian Sun
A1 - Rong-hua Hong
J0 - Journal of Zhejiang University Science A
VL - 13
IS - 5
SP - 353
EP - 360
%@ 1673-565X
Y1 - 2012
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1100222

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


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