Modeling and Comparing the Multi-Optimum Results of Plain Fin and Tube Heat Exchanger with and with out Nano Fluids

In the present study, a comprehensive thermal modeling and optimal design of plain fin-and-tube heat exchanger by using nano fluids as , and is performed. The optimum results state of using nano fluids and without nano is compared. Hence, method is applied to estimate the heat exchanger pressure drop and effectiveness. The design parameters of this scientific study are selected as: Longitudinal pitch, transversal pitch, fin pitch, number of tube pass, tube diameter, cold stream flow length, no-flow length and hot stream flow length. The optimum result of , and showed the total annual cost and Effectiveness in comparison without nano fluids, is in same range, respectively. Using nano fluids showed improvement for two objective functions. Furthermore, the sensitivity analysis of change in optimum effectiveness and total annual cost with changes in design parameters of the fin tube heat exchanger is also performed in detail.