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Comprehensive performance investigation and optimization of a plate fin heat exchanger with wavy fins

As the pressure drop and pump power increase with the enhancement of heat
 transfer, it is of great value to investigate the comprehensive performance of
 the heat exchanger based on common accurate correlations of heat transfer and
 flow friction. This paper adopts a generalized air-side thermal-hydraulic
 correlation to study the comprehensive performances of the plate fin heat
 exchanger with wavy fins. To better understand the fin characteristics,
 performance indexes under the same flow rate, pressure drop and pump
 power are employed to estimate the comprehensive flow and heat transfer
 performances. The nonlinear optimization problem is established in
 consideration of the multiple independent variables with the maximum
 effectiveness or the minimum modified entropy generation number as the
 optimization objective function, which is solved by the genetic algorithm.
 Comparative analysis is conducted for results obtained from the parametric
 analysis and heat exchanger optimization, indicating that the objective
 function of the modified entropy generation number is effective for the design
 optimization of the comprehensive performance.