Effect of Thermal Heat Transfer in Machines

Abstract

The heat exchanger (HE) is a mechanical system for transferring thermal energy between dissimilar substances without requiring their physical contact. For this reason, it plays a crucial role in facilitating the exchange of energy and the completion of many processes involving the transformation of energy. In HE operations between energy systems, various factors—including length, material type, exchange fluid, surrounding environment, and many others—influence and play a big and important part in the efficiency of transformation and exchange in forms of energy. This study used computational fluid dynamics (CFD) simulations to examine the impact of HE length for both parallel and counter flow configurations. The quality and efficiency of the HE and the temperature distribution were significantly affected by the exchange parameters, particularly the length of the HEs in both the parallel and counter-flow HEs. The overall assessment demonstrates that, for both parallel and counter-flow HEs, increasing the length of the HE improves the efficiency of energy transfer by increasing the heat transfer and making heat dispersion more homogenous.