Performance Evaluation of Hexagonal Tube in Shell in Tube Heat Exchanger by Using Computational Fluid Dynamics

Mechanical Engineering

The Heat exchanger is a device which used to transfer heat from one fluid to another through a solid medium or interface. There is various type of heat exchanger available. In this paper shell and tube type heat exchanger is selected. Our objective was to change the cross section of tube to enhance the efficiency of the heat exchanger. A hexagonal cross section of tubes is selected for the investigation. Design of new shell and tube heat exchanger is done using standard designing procedure and 3D modeling is done in Solidworks. Finite Element Analysis software ANSYS Workbench 18.0 is used to perform CFD analysis under a standard working condition to find performance parameter. We found that the hexagonal cross-section provides more effective heat exchange due to increase in the convective surface. The computational fluid dynamics (CFD) model equations are solved to predict the hydrodynamic and thermal behaviour of the exchanger. The geometry of the problem and meshing of it have been made in and the models have been solved by ANSYS Workbench. CFD models or packages provides the contours and data which predict the performance of the heat exchanger design and are effectively used because it has ability to obtain optimal solutions and has work in difficult and hazardous condition.

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