between two or
more fluids when compared to other types of Heat Exchangers. Various heat
transfer augmentation techniques (passive, active or combination of both) are
already present to enhance the heat transfer capability and were used mainly in
many areas of process industries, refrigerators, thermal power plants, automobiles,
etc. In this paper, a brief numerical comparison of shell & Tube heat
exchangers is presented in detail representing the best possible augmented heat
transfer along with heat transfer characteristics. For this, a shell & Tube
heat exchanger with Helix baffle plate varying the pitch of helix, shell &
tube heat exchanger with segmental baffle plate varying baffle spacing along
with tubes with fins are targeted to enhance the maximum possible heat
transfer. Finite volume numerical simulation is performed on the above three
Heat exchangers using ANSYS Fluent version 17.2. Convergence criteria residuals
of the order 10-6 are adopted for convergence acceleration. Mesh
refinement is done until convergence is reached. Heat transfer coefficient,
pressure (p) and Nusselt number (Nus) is visualized along the length
of the heat exchanger. The heat exchanger which exhibits better performance
characteristics compared to the other two types of Shell & Tube Heat
Exchangers is to be selected for further applications to maximize the overall
efficiency of the system.
