STUDY OF FLOW AND HEAT TRANSFER ANALYSIS IN SHELL AND TUBE HEAT EXCHANGER USING CFD
Heat exchangers are used to transfer heat from high temperature to lower temperature in Fluid . It used in industrial purposes in chemical industries, nuclear power plants, refineries, food processing, etc. The need to increase the thermal performance of heat transfer equipment (for instance, heat exchangers), thereby effecting energy, material, and cost savings as well as a consequential mitigation of environmental degradation has led to the development and use of many heat transfer enhancement techniques., efficiency and effectiveness of heat exchangers is an important parameter while selection of industrial heat exchangers. A multi pass shell and tube heat exchanger with 3 tubes with fins modelling is done using ANSYS 14.5 and meshing has done using ICEM CFD software, simulations has done by using CFD-FLUENT software. Using Fluent, computational fluid dynamics software the pressure drop, Temperature variations and heat transfer are analysed under turbulent flow condition. Nano fluid such as Al2O3-H2O is used as cooling medium. Methods for improvement on heat transfer have been worked upon for many years in order to obtain high efficiency with optimum cost. The CFD simulated results achieved from the use of the creating fin in tube side in shell and tube type heat exchanger are compared with without fin. Based on the results, providing fins on tube causes the increment of surface area and Overall heat transfer coefficient which results in the enhancement of heat transfer rate of heat exchanger.
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