[1] Chen Yaping, Zhou Qiangtai, Shi Mingheng,. Mathematical model and calculation for heat transferduring condensation on surfaces of corrugated plates [J]. Journal of Southeast University (English Edition), 2003, 19 (4): 347-351. [doi:10.3969/j.issn.1003-7985.2003.04.009]

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Mathematical model and calculation for heat transferduring condensation on surfaces of corrugated plates()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

19

Issue:

2003 4

Page:

347-351

Research Field:

Energy and Power Engineering

Publishing date:

2003-12-30

Info

Title:

Mathematical model and calculation for heat transferduring condensation on surfaces of corrugated plates

Author(s):

Chen Yaping;  Zhou Qiangtai;  Shi Mingheng

Department of Power Engineering, Southeast University, Nanjing 210096, China

Keywords:

condensation;  enhancement of heat transfer;  corrugated plates;  plate-shell heat exchanger

PACS:

TK124

DOI:

10.3969/j.issn.1003-7985.2003.04.009

Abstract:

A mathematical model was established for condensation on surfaces of vertical corrugated plates based on the mechanism of heat transfer enhancement to thin down the liquid film due to surface tension effect between corrugated plate surfaces and liquid films. The relative heat transfer coefficients of condensation on corrugation plates were calculated in contrast with equivalent vertical plane ones. The heat transfer enhancement effects for the main geometric parameters such as pitch, height, corrugation angle, tilt angle, and fillet radii of corrugations were analyzed to guide the optimization of corrugation structure for application. A two-scale corrugation is suggested, which can compromise both the enhanced heat transfer effect and adequate cross section area for flows, and it makes the heat transfer coefficient 1 to 2 times more than that of an equivalent plane one.

References:

[1] Trumpfheller Gary. Selecting the appropriate type of heat exchanger [J]. Chemical Processing, 1998, 61(1):59-63.
[2] Chen Yaping, Xu Lihua, Zhou Qiangtai. Development of a new type corrugated plate shell heat exchanger [J]. Boiler Technology, 2001, 32(1): 13-16.(in Chinese)
[3] Wang G, Vanka S P. Convective heat transfer in periodic wavy passages [J]. Int J Heat Mass Transfer, 1995, 38(17): 3219-3230.
[4] Butterworth D. Filmwise condensation in two phase flow and heat transfer [M]. London: Oxford University Press, 1977. 426-462.
[5] Nusselt W. Die Oberflachen Kondensation des Wasserdampfes [J]. Zeitschrift ver ein Deutscher Ingenieure, 1916, 60(27):541-546.
[6] Gu Weizao, Shen Jiarui, Ma Chongfang, et al. Enhancement of heat transfer [M]. Beijing: Science Press, 1990. 512-576.(in Chinese)
[7] Chen Yaping, Zhou Qiangtai, Xu Lihua. Similarity solution of film condensation on vertical walls [J]. Journal of Engineering Thermophysics, 2001, 22(2): 219-222.(in Chinese)
[8] Chen Yaping, Zhou Qiangtai, Shi Mingheng. Research on heat transfer enhancement for condensation on surfaces of vertical corrugated plates [J]. Journal of Engineering Thermophysics, 2002, 23(sup.): 81-84.(in Chinese)

Memo

Memo:

Biography: Chen Yaping(1956—), male, doctor, associate professor, ypgchen@sina.com.

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