The concept of relative inverse admittance applied to composite fins optimization in the case of longitudinal rectangular fins under 2D heat conduction is presented in this work. Here, different values for convective conditions at the fin and composite layer surfaces are used and the influence of the kc/kf ratio and composite thickness in optimum geometry is determined. The optimization process is carried out through universal graphs in which the range of parameters covers most of the practical cases a designer will find. Relative inverse admittance is applied in a general form and emerges as an easily used tool for optimizing composite fins.
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Technical Briefs
References
1.
Barker
, J. J.
, 1958
, “Efficiency of Composite Fins
,” Nucl. Sci. Eng.
, 3
, pp. 300
–312
.2.
Barrow
, H.
, Mistry
, J.
, and Clayton
, D.
, 1986
, “Numerical and Exact Mathematical Analyses of Two Dimensional Rectangular Composite Fins
,” Proc. 8th International Heat Transfer Conference
, San Francisco
, Vol. 2
, pp. 367
–372
.3.
Tu
, P.
, Inaba
, H.
, Horibe
, A.
, Li
, Z.
, and Haruki
, N.
, 2006
, “Fin Efficiency of an Annular Fin Composed of a Substrate Metallic Fin and a Coating Layer
,” ASME J. Heat Transfer
, 128
, pp. 851
–854
.10.1115/1.22270434.
Gorobets
, V.
, 2006
, “Thermal Efficiency and the Optimum Sizes of Finned Surfaces with Coating
,” Proc. 13th International Heat Transfer Conf.
, HEX-03, Sydney, Australia.5.
Gorobets
, V.
, 2008
, “Influence of Coating on Thermal Characteristics and Optimum Sizes of Fins
,” J. Enhanced Heat Transfer
, 15
, pp. 65
–80
.10.1615/JEnhHeatTransf.v15.i1.506.
Cortés
, C.
, Díez
, L. I.
, and Campo
, A.
, 2008
, “Efficiency of Composite Fins of Variable Thickness
,” Int. J. Heat Mass Transfer
, 51
, pp. 2153
–2166
.10.1016/j.ijheatmasstransfer.2007.11.0047.
González-Fernández
, C. F.
, 2002
, Heat Transfer and the Network Simulation Method and Network Simulation Method
, Horno
J.
, ed., Research Signpost
, Kerala, India
, Chap. 2.8.
Alarcón
, M.
, Alhama
, F.
, and González-Fernámdez
, C. F.
, 2003
, “A Revision of the Classical Performance Extended SurfacesAssessment: Proposed New Coefficients
,” ASME J. Heat Transfer
, 125
(6
), pp. 1187
–1191
.10.1115/1.16037779.
Luna–Abad
, J. P.
, Alhama
, F.
, and Campo
, A.
, 2010
, “Optimization of Longitudinal Rectangular Fins Through the Concept of Relative Inverse Admittance
,” Heat Transfer Eng.
, 31
(5
), pp. 395
–401
.10.1080/0145763090337522810.
Luna–Abad
, J. P.
, and Alhama
, F.
, 2010
, “Optimization of Longitudinal Rectangular Fins with Asymmetrical Boundary Conditions
,” Proc. 14th International Heat Transfer Conference
, (ASME), Washington, DC.11.
Luna–Abad
, J. P.
, 2010
, “Caracterización, Optimización y Diseño de Algunos Tipos de Aletas a través del Concepto de Admitancia Térmica Inversa Relativa
,” Ph.D. thesis, Universidad Politécnica de Cartagena, Cartagena, Spain.12.
PSPICE 6.0, 1994, MicroSim Corp., Irvine, CA
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