Fully developed laminar flow heat transfer in a plate-fin heat exchanger with interfin core channels of trapezoidal cross section and by extension, its limiting rectangular and triangular cross section geometries, is considered. With heating or cooling at the partition plates of the core given by the constant wall temperature, or , and uniform heat flux, or , conditions, the fin effectiveness is modeled to be zero. This condition is representative of poor contact between the fin and partition plate, encountered in mass-produced compact cores and/or low conductivity fin materials. Computational solutions, obtained by second-order accurate control-volume schemes, highlight the effects of geometry and thermal condition on the Nusselt number ( and ), and the results complement and extend the literature on compact-channel internal forced convection. Also, as a design and optimization tool for the practicing engineer, polynomial functions of the flow cross section aspect ratio are presented to predict both the friction factor and the Nusselt number for the different trapezoidal and triangular fin core geometries considered.
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December 2010
Technical Briefs
Extended Results for Fully Developed Laminar Forced Convection Heat Transfer in Trapezoidal Channels of Plate-Fin Exchangers
O. A. Huzayyin,
O. A. Huzayyin
Thermal-Fluids & Thermal Processing Laboratory, College of Engineering and Applied Science,
University of Cincinnati
, Cincinnati, OH 45221-0072
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R. M. Manglik,
R. M. Manglik
Fellow ASME
Thermal-Fluids & Thermal Processing Laboratory, College of Engineering and Applied Science,
e-mail: raj.manglik@uc.edu
University of Cincinnati
, Cincinnati, OH 45221-0072
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M. A. Jog
M. A. Jog
Mem. ASME
Thermal-Fluids & Thermal Processing Laboratory, College of Engineering and Applied Science,
University of Cincinnati
, Cincinnati, OH 45221-0072
Search for other works by this author on:
O. A. Huzayyin
Thermal-Fluids & Thermal Processing Laboratory, College of Engineering and Applied Science,
University of Cincinnati
, Cincinnati, OH 45221-0072
R. M. Manglik
Fellow ASME
Thermal-Fluids & Thermal Processing Laboratory, College of Engineering and Applied Science,
University of Cincinnati
, Cincinnati, OH 45221-0072e-mail: raj.manglik@uc.edu
M. A. Jog
Mem. ASME
Thermal-Fluids & Thermal Processing Laboratory, College of Engineering and Applied Science,
University of Cincinnati
, Cincinnati, OH 45221-0072J. Thermal Sci. Eng. Appl. Dec 2010, 2(4): 044501 (6 pages)
Published Online: January 19, 2011
Article history
Received:
October 29, 2010
Revised:
December 17, 2010
Online:
January 19, 2011
Published:
January 19, 2011
Citation
Huzayyin, O. A., Manglik, R. M., and Jog, M. A. (January 19, 2011). "Extended Results for Fully Developed Laminar Forced Convection Heat Transfer in Trapezoidal Channels of Plate-Fin Exchangers." ASME. J. Thermal Sci. Eng. Appl. December 2010; 2(4): 044501. https://doi.org/10.1115/1.4003281
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