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Journal of Enhanced Heat Transfer
IF: 0.562 5-Year IF: 0.605 SJR: 0.211 SNIP: 0.361 CiteScore™: 0.33

ISSN Print: 1065-5131
ISSN Online: 1026-5511

Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.2012006003
pages 535-547

OPTIMIZATION OF ISOTHERMAL PLATE FIN ARRAYS WITH LAMINAR FORCED CONVECTION

Matti Lindstedt
Tampere University of Technology
Reijo Karvinen
Tampere University of Technology, Korkeakoulunkatu 6 P.O. BOX 589,FI-33101 Tampere, Finland

ABSTRACT

The minimum thermal resistance of isothermal plate fin arrays with a fixed array width, number of fins, and either pressure drop or fan power can be found in the literature. In the present study, the thermal resistance is minimized with the number of fins, either volume or width, and either pressure drop or fan power fixed. Only laminar forced convection is considered. The contraction and expansion losses at the inlet and exit are taken into account in the calculation of the pressure drop. The optimal design is characterized by the nondimensional channel length and the ratio of the fin thickness to the channel width. Another nondimensional variable connects the three criteria and coolant thermal properties.


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