Journal Article

Experimental investigation and multi-objective optimization of a novel multi-fluid heat exchanger performances using response surface methodology and genetic algorithm

Mishra, Sudhansu S., Joardar, Hillol, Mohapatra, Taraprasad, Almasri, Belal

2024

Overview

This experimental investigation focuses on the heat transfer performance of a novel multi-fluid heat exchanger (NMFHE) in regard to variation in the flow rate of heat transfer fluids HF 1 (hot water), HF 2 (normal water), and inlet temperature of HF 1 (hot water). A brazed helix tube with inside and outside surface waviness is fitted inside NMFHE prepared from helical coil tube is novel. The co-relations between input parameters and output responses are predicted and statistically modeled using response surface methodology and multi objective genetic algorithm (MOGA)-artificial neural network (ANN) and validated with experimental data reasonably. The Nusselt number and entropy generation number are considered as the performance measure for this study. HF 2 flow rate is identified as the most critical input parameter for the Nusselt number for HF 1 , HF 2 , and entropy generation number with an increment of 24.34%, 24.14%, and 24.41%, respectively, whereas HF 1 inlet temperature critically affects the Nusselt number of HF 3 with a decrement of 14.86%. For HF 1 flow rate of 190 LPH, HF 2 flow rate of 200 LPH, and HF 1 inlet temperature of 75 °C, the maximum Nusselt number for HF 1 , HF 2 , and HF 3 , and the minimum entropy generation number, are predicted as 42.84, 52.5, 52.1, and 0.0191, respectively, from the present optimization analysis with a composite desirability (D) of 0.939. The optimal outcomes from MOGA-ANN are experimentally verified and it is found that the data variation within ± 4% in the MOGA-ANN hybrid technique.

• Publisher: Springer Berlin Heidelberg,Springer Nature B.V
• Subject: Air conditioning / Artificial neural networks / Cold / Efficiency / Engineering / Entropy / Flow velocity / Fluid flow / Fluids / Genetic algorithms / Heat exchangers / Heat transfer / Hot water / Hydraulics / Inlet temperature / Mechanical Engineering / Multiple objective analysis / Nanoparticles / Nusselt number / Optimization / Optimization techniques / Parameter identification / Response surface methodology / Surface waviness / Technical Paper / Temperature / Variables / Variance analysis