EHD-Enhanced Boiling Coefficients and Visualization of R-134a Over Enhanced Tubes-Reference-Cited by-同舟云学术

EHD-Enhanced Boiling Coefficients and Visualization of R-134a Over Enhanced Tubes

Published:1997-05-01 Issue:2 Volume:119 Page:332-338
ISSN:0022-1481
Container-title:Journal of Heat Transfer
language:en
Short-container-title:

Author:

Cheung K.¹,Ohadi M. M.²,Dessiatoun S.²,Singh A.³

Affiliation:

1. Naval Center for Space Technology, Naval Research Laboratory, Washington, DC

2. Heat Transfer Enhancement Laboratory, Center for Environmental Energy Engineering, Department of Mechanical Engineering, University of Maryland, College Park, MD 20742

3. Advanced Development Center, Copeland Corporation, Sidney, OH

Abstract

In an earlier study by the authors, the applicability of the EHD technique for augmentation of pool boiling heat transfer of R-134a in a tube bundle was demonstrated. This paper reports additional experiments involving optimization of the electrode/heat transfer surface geometry as well as flow visualization studies that provide improved understanding of the EHD-enhanced pool boiling heat transfer in a tube bundle. Utilizing the flow visualization studies, it is demonstrated that combined electroconvection and improved nucleate boiling dynamics give rise to the augmented heat transfer coefficients.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://asmedigitalcollection.asme.org/heattransfer/article-pdf/119/2/332/5790248/332_1.pdf

Reference12 articles.

1. Cheung, K., Ohadi, M. and S. Dessiatoun, 1995, “Compound Enhancement of Boiling Heat Transfer of R-134a in a Tube Bundle,” ASHRAE Transactions, Vol. 101, pt. 1, in press.

2. Cooper P. , 1990, “EHD Enhancement of Nucleate Boiling,” ASME JOURNAL OF HEAT TRANSFER, Vol. 112, May 1990, pp. 458–464.

3. Fellows, B. R., Richard, R. G., and Shankland, I. R., 1991, “Electrical Characterization of Alternate Refrigerants,” Xviith International Congress of Refrigeration, Paper No. 45, Montreal, Quebec, Canada, August 1991.

4. Jones T. B. , 1978, “Electrohydrodynamically Enhanced Heat Transfer in Liquids—A Review,” Advances in Heat Transfer, Vol. 14, pp. 107–148.

5. Kawahira H. , KuboY., YokoyamaT., and OgataJ., 1990, “The Effect of an Electric Field on Boiling Heat Transfer of Refrigerant 11—Boiling on a Single Tube,” IEEE Transactions on Industry Applications, Vol. 26, No. 2, pp. 359–365.

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