Abstract

Thermal performance characteristics of orthotropic material annular fins subjected to dehumidifying operating conditions are studied using two-dimensional finite element method. The method accounts for non-linear temperature–humidity ratio psychrometric relationship under both partially and fully wet operating conditions. Limits of one-dimensional solutions for orthotropic material fins subject to dehumidifying conditions are investigated in somewhat more detail by introducing dimensionless parameters. The dry fin parameter that fully governs fin efficiency under a set of operating conditions is also defined. The optimum fin dimensions are also estimated for a set of operating conditions and fixed fin volume.

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