Over the past few years, various types of baffles have been used in tube heat exchangers. The goal of presenting new designs has always been that, despite an increase in the heat transfer rate of the converter, the amount of pressure drop across the shell remains at a reasonable level. The low coefficient of heat transfer on the shell and the fluid flow have led to generation of dead regions. Therefore the chance of solidification in these converters increases. Also, the amount of pressure drop for the heat transfer coefficient and the vibration in the tube is high.
Studies show that for all spiral angles with a same pressure drop, the heat transfer coefficient of the shell and tube heat exchanger with the spiral baffle will be greater than the shell and tube heat exchanger with an ordinary baffle. The shell of the spiral baffle compensates flow losses and eliminates the pressure drop. So spiral baffles are a very effective way to convert the pressure drop to heat transfer.
In this analysis, an attempt has been made to simulate the flow of a shell and tube heat exchanger with a helical baffle using Ansys Fluent software.
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TITLE: CFD SIMULATION OF A HEAT EXCHANGER SHELL AND TUBE WITH A SPIRAL BAFFLE
SOFTWARE: ANSYS FLUENT
PROJECT TYPE: HEAT TRANSFER
TIME: 2 WEEKS