Performance Optimization of Turbulator Fitted Heat Exchanger with Ternary Hybrid Nano Coolant Using Taguchi Method

Abstract

In current research work, optimization of heat exchanger performance has been performed using Taguchi-Grey optimization technique. The Taguchi approach is employed for experimental design involving three levels of three variables, i.e., Reynolds number (4200, 5200, and 6200), Al₂O₃-SiO₂-TiO₂ based Ternary Hybrid Nano Fluids (THNF) (0.06%, 0.09%, and 0.12% volume concentration), and Heat exchangers (Plane tube, Twisted Turbulator Insert (TTI), Perforated Twisted Turbulator Insert (PTTI). The L9 Orthogonal Array (OA) is derived from all accessible array. The performance parameters pressure drops, friction factor, heat transfer, Performance Evaluation Criteria (PEC), Irreversibility, CO₂ discharge, and Heat Exchanger Operating Cost (HXOC) have been collected with performing experiment according to L9 OA, and optimization of each parameter was executed statically. The optimization results revealed that Reynolds number is most influencing parameters in terms of pressure drops, CO₂ discharge, and HXOC, and Heat exchanger is most influencing parameters in terms of friction factor, heat transfer, PEC, and Irreversibility. The Grey analysis revealed that heat exchanger overall performance was noticed optimum for 4200 Reynolds number, 0.12% concentration of THNF, and PTTI.