Abstract

As evidenced by all these sumptuous implications in energy conversion and the chemical industry, heat transfer is regarded among the most significant industrial processes. It's critical to avoid material degradation in the heat exchanger, as well as flow misdistribution, which impacts the heat exchanger's effectiveness in the transient regime. Thus, this research's objective is to overcome the above-mentioned problems; the plate-fin heat exchanger (PFHX) is manufactured with composite materials such as SS316+copper and SS304+Flyash in a counter flow type which are brazed together with the method of salt bath brazing and vacuum brazing. A heat exchanger with any required plate or fin geometry may be created due to the advancements in additive manufacturing technology. Primarily, this study presents the analytical formulation of heat transfer and fluid flow in PFHX design to predict the enhancement of heat transfer and overall heat transfer coefficient. The numerical analysis is developed for the formulation of hot and cold fluids and the plates in the heat exchanger with the steady state boundary conditions and transient state initial conditions using finite difference approach. The data reduction for the evaluation of numerical analysis is also carried out. Moreover, the optimization model is utilised to improve the numerical analysis' thermal conductivity outcome, and results with accurate prediction of heat transfer enhancement.

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