Design optimisation of an air-oil heat exchanger

Kroger D.G. (1983)


A procedure for determining the maximum performance over cost ratio, and the corresponding fin dimensions and operating conditions in the design of a plate finned air-oil heat exchanger is presented. The method assumes a particular material, manufacture and energy cost structure as well as certain practical limitations. It is found that the performance cost ratio is most significantly influenced by the number of operational hours per annum. Generally the optimum fin tends to be thinner with a larger effective diameter, while the air and oil velocities are lower than those found in industrial applications. These lower velocities require the optimum heat exchanger to be larger and thus more costly initially. An industrial oil cooler is tested experimentally in order to verify the accuracy of the heat transfer and pressure drop equations employed and for purposes of comparison. © 1983.

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