Present study will be about the procedure of CFD analysis of a triple concentric heat exchanger. Computational Fluid Dynamics is a growing phenomena in the field of design and heat transfer studies. CFD software, ANSYS Workbench is a one used in a phenomenal way throughout various industries that have their work in heat transfer processes. Here, the specific focus will be on the analysis of the fluid flow and heat transfer in a Triple Concentric Tube Heat Exchanger (TCTHE) which has three different fluids, fluid 1 running through the innermost tube, fluid 2 running through the intermediate tube (i.e. inner annulus) and fluid 3 running through the outermost tube (i.e. outer annulus).