Journal ArticleDOI
Natural-convective heat exchanger with vertical rectangular fins and base: Design criteria
Chun Wah Leung,S.D. Probert +1 more
- Vol. 201, Iss: 5, pp 365-372
TLDR
In this article, the vertical-fin array's geometrical parameters, corresponding to achieving maximum rates of heat loss, were deduced for a polished, duralumin and extended-plate, heat exchanger through air.Abstract:
Steady state rates of free-convective, conductive and radiative heat transfer from a polished, duralumin and extended-plate, heat exchanger through air have been measured. When its vertical base was maintained at 40.0 (±0.2) K above the local air temperature (=15.5 ± 0.4°C) in the laboratory, optimal values of the vertical-fin array's geometrical parameters, corresponding to achieving maximum rates of heat loss, were deduced. For a base of width 190 mm and length 250 mm, the optimal uniform separation between 3 mm thick fins rose from 9.5 to 11.1 mm as the fin protrusion was decreased from 90 to 30 mm: it was almost independent of temperature within the range considered. For a base of width 190 mm and length 500 mm, the optimal uniform thickness for fins of 60 mm protrusion rose from 1.5 to 3.6 mm as the fin separation was increased from 15 to 55 mm, the optimal fin thickness being almost invariant with respect to changes in the fins' base temperature.No generalized quantitative recommendations emerge fro...read more
Citations
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Journal ArticleDOI
Natural convection heat transfer from inclined plate-fin heat sinks
Ilker Tari,Mehdi Mehrtash +1 more
TL;DR: In this paper, the steady state convection from heat sinks with parallel arrangement of rectangular cross section vertical plate fins on a vertical base is numerically investigated in order to obtain a validated model that is used for investigating inclined orientations of a heat sink.
Journal ArticleDOI
Natural convection from rectangular interrupted fins
TL;DR: In this article, the effects of fin spacing, fin interruption, and fin interruption length were investigated numerically and experimentally and the results showed that adding interruptions to vertically-mounted rectangular fin can enhance the thermal performance considerably and that an optimum fin interruption exists.
Journal ArticleDOI
Heat-exchanger performance: Effect of orientation
Chun Wah Leung,S.D. Probert +1 more
TL;DR: In this paper, the average coefficient for heat transfer from a finned surface to the ambient environment, for all the finned surfaces in these two types of configuration, was assessed.
Journal ArticleDOI
Functionality in blend design
TL;DR: A method is presented for obtaining surfaces that satisfy certain given design conditions and designs, which optimize some function of the surface while satisfying some other constraints, are found.
Journal ArticleDOI
Measurements of heat dissipation from miniaturized vertical rectangular fin arrays under dominant natural convection conditions
TL;DR: In this paper, the authors investigated the effects of miniaturizing the base plate dimensions of vertically-based straight rectangular fin arrays on the steady-state heat-dissipation performance under dominant natural convection conditions.
References
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Journal ArticleDOI
Heat dissipation of parallel plates by free convection
TL;DR: In this article, the warmeabgabe bei freier Konvektion in Luft von vertikalen quadratischen parallelen Platten of h × h cm2 im gegenseitigen Abstand b wird gemessen.
Thermally optimum spacing of vertical, natural convection cooled, parallel plates
TL;DR: In this article, the authors developed composite relations for the variation of the heat transfer coefficient along the plate surfaces, and the mathematical development and verification of such composite relations as well as the formulation and solution of the optimizing equations for the various boundary conditions of interest constitute the core of the presentation.
Journal ArticleDOI
Thermally Optimum Spacing of Vertical, Natural Convection Cooled, Parallel Plates
TL;DR: In this paper, the authors developed composite relations for the variation of the heat transfer coefficient along the plate surfaces, and the mathematical development and verification of such composite relations as well as the formulation and solution of the optimizing equations for the various boundary conditions of interest constitute the core of the presentation.
Journal ArticleDOI
The Development of Free Convection Between Heated Vertical Plates
J. R. Bodoia,J. F. Osterle +1 more
TL;DR: The development of free convection in a viscous fluid between heated vertical plates is investigated in this paper, where the basic governing continuity, momentums and energy equations are expressed in finite difference form and solved numerically on a digital computer.
Journal ArticleDOI
An Experimental Investigation of Free-Convection Heat Transfer From Rectangular-Fin Arrays
K. E. Starner,H. N. McManus +1 more
TL;DR: In this paper, the average heat transfer coefficients for four fin arrays positioned with the base vertical, 45 degrees, and horizontal while dissipating heat to room air were analyzed as constant-temperature surfaces.
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