Numerical Study of Heat Transfer and Flow Characteristics in Helical Coil Heat Exchangers with TiO2 Nanofluids

ABSTRACT:

This study focuses on enhancing the heat transfer performance of helical coil heat exchangers by utilizing TiO2 nanofluids, which are known for their superior thermal properties. Heat exchangers are essential in various industries for transferring heat between fluids, and helical coil heat exchangers stand out due to their high heat exchange efficiency. The study employs a numerical approach using the ANSYS CFD solver to analyze nine different helical coil geometries, where variations in the number of ribs and the number of coil revolutions are explored. The 3D models of these geometries are created using SolidWorks, and key performance indicators such as friction factor, pressure difference, Nusselt number, and heat transfer coefficient are calculated through the CFD results. By comparing these parameters, the study aims to identify the optimal geometry that maximizes heat transfer efficiency, offering insights for improving the design and performance of heat exchangers in various industrial applications.

Aim:

The aim of this study is to enhance the heat transfer performance of helical coil heat exchangers by using TiO2 nanofluids and analyzing various geometric configurations. The study seeks to identify the optimal geometry by examining the effects of rib count and coil revolutions on key performance parameters such as friction factor, pressure difference, Nusselt number, and heat transfer coefficient through numerical simulations using ANSYS CFD solver.

Objective:
The objective of this study is to analyze the heat transfer characteristics of helical coil heat exchangers using TiO2 nanofluids by varying the number of ribs and coil revolutions in the geometry. The study aims to determine the friction factor, pressure difference, Nusselt number, and heat transfer coefficient for each geometry using numerical simulations with ANSYS CFD solver. The ultimate goal is to identify the optimal geometry that maximizes heat transfer performance, contributing to improved heat exchanger design in industrial applications.

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