The Design of Metal Fins for Air-Cooled Engines 370169

THIS paper gives the results of an analysis made to determine the proportions of aluminum and steel fins to dissipate maximum quantities of heat for several pressure differences across a finned cylinder. The power required to force the cooling air between the fins and the relative weights of the various designs are presented.
The calculation of the heat flow in the fins is based on an experimentally verified, theoretical equation and the surface heat-transfer coefficients and pressure differences were taken from previously reported experiments.
In particular, the analysis concerns fin proportions for minimum pressure drop, minimum power, and minimum weight.


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