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Analysis and Amendment of Design Factors about Heat Pipe of Screen Wicks(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2004年03期
Page:
7-10
Research Field:
Publishing date:

Info

Title:
Analysis and Amendment of Design Factors about Heat Pipe of Screen Wicks
Author(s):
ZHAO Xiaobao
School of Power Engineering, Nanjing Normal University, Nanjing 210042, China
Keywords:
low temperature heat pipe ;  composite wicks ;  factor amendment ;  flow resistance
PACS:
TK172.4
DOI:
-
Abstract:
This paper discusses the selection about the working liquid and the wick structure in the heat pipe design. The composite wick capillary head should be calculated by using the equivalent diameter of the fine screens of the outer layer , and the effective radius of the screen wicks was related to the screen structure , with the calculated capillary head 1/ 3 higher than the experimental result. The contact angel should be set at 60°in the design. On analysis , the conclusion has been drawn that the flow resistance in the wicks should be calculated by taking into account the permeability and the flow section area of the inner layer screens. The capillary limit is the vital factor that should be emphasized in the heat pipe design.

References:

[1 ] 庄骏,张红. 热管技术及其工程应用[M] . 北京:化学工业出版社,2000. 355- 370.
[2 ] Amir Faghri. Heat Pipe Science and Technology[M] . Wash2 ington D C:Taylor & Francis , 1995. 222- 251.
[3 ] Imura H , Kozai H , Ikeda Y. The effective pore radius of screen wicks [A] . Ma Tongze. Advances in Heat Pipe Sci2 ence and Technology[C] . Proceedings of the 8th International Heat Pipe Conference ,1992. 113 -118.
[4 ] Chan C , Salt H. Capillary head and permeability of wicks with single or multiple size pores[A] . Ma Tongze. Advances in Heat Pipe Science and Technology[C] . Proceedings of the 8th International Heat Pipe Conference ,1992. 33- 38.
[5 ] Schlitt KR , Brennan PJ , Kirkpatrick J P. Parametric perfor2 mance of extruded axial grooved heat pipes from 100°to 300° K[C] . Boston :AIAA/ ASME Thermpphysics and Heat Trans2 fer Conference ,1974. 714 -724.

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Last Update: 2013-04-29