CFD Analysis of Heat Transfer Enhancement in Shell and Tube Type Heat Exchanger creating Triangular Fin on the Tubes

Shell and Tube heat exchangers are having special importance in boilers, oil coolers, condensers, pre heaters. Shell and Tube heat exchanger is one such heat exchanger, provides more area for heat transfer between two fluids in comparison with other type of heat exchanger. To intensify heat transfer with minimum pumping power innovative heat transfer fluids called Nano fluids have become the major area of research now a days. The primary aim is to evaluate the effect of different weight concentration and temperatures on convective heat transfer. Increasing the weight concentration and temperatures leads to enhancement of convective heat transfer coefficient. In the present, work attempts are made to enhance the heat transfer rate in shell and tube heat exchangers. A multi pass shell and tube heat exchanger with 3 tubes with fins modelling is done using ANSYS. Nanofluid such as Al2O3 used. 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 overall heat transfer coefficient which results in the enhancement of heat transfer rate of heat exchanger.


INTRODUCTION
Heat exchanger is defined as a device which is use to transfer energy between two fluids @ IJTSRD | Available Online @ www.ijtsrd.com | Volume -2 | Issue -4 | May-Jun 2018 Shell and Tube heat exchangers are having special importance in boilers, oil coolers, condensers, preand Tube heat exchanger is one such heat exchanger, provides more area for heat transfer between two fluids in comparison with other type of heat exchanger. To intensify heat transfer with minimum pumping power innovative heat transfer fluids have become the major area The primary aim is to evaluate the effect of different weight concentration and temperatures on convective heat transfer. Increasing the weight concentration and convective heat transfer coefficient. In the present, work attempts are made to enhance the heat transfer rate in shell and tube heat exchangers. A multi pass shell and tube heat exchanger with 3 tubes with fins modelling is done ch as Al2O3-H2O is used. 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 transfer coefficient which results in the enhancement of heat transfer rate of heat Shell and Tube heat exchanger, Nano fluids, Heat transfer, ANSYS 14.5, Overall heat transfer Heat exchanger is defined as a device which is use to which are at different temperature with maximum rate and minimum cost.
Classification of Heat Exchanger: types of heat exchanger which are widely used in industry and application of power generation. Heat exchanger is classified based on following criteria:  According to flow arrangements of fluids.  According to heat transfer process.  According to geometry of construction. According to flow arrangements of fluids. According to heat transfer process. According to geometry of construction.

LITERATURE REVIEW
Heat transfer performance of heat exchangers can be improved by using nanofluids. The nanofluids can help to reduce the cost and size of the heat exchangers, and heating and cooling systems. Nano fluids are study of behaviour of fluids, which are confined to Nano meter sized structure of particles.

PROBLEMS FORMULATION
From the previous works further problems are identified. For enhancement of the heat transfer, the factors which affect the heat transfer rate are area contact, turbulence creating on fluid flow and Thermophysical properties of fluid. In the previous finding researches, heat transfer rate is low due to the low value of overall heat transfer coefficient and Nusselt number.

RESEARCH OBJECTIVES
It can be observed from the problems identification dissolving by the improvement in the shell and tube type heat exchanger by applying various techniques which causes the result in the enhancement of heat transfer rate in the heat exchanger. The effort make to enhancement of heat transfer in heat exchanger are develop a proper Heat Exchanger for maximum heat transfer rate.

METHODOLOGY
In this study a CFD model has design in Design modular using ANSYS 14.5. The shell and tube heat exchanger consists of the components Shell and tubes.

nanofluid) Properties Using Pak and cho Relation
In this work the model of shell and tube type heat exchanger are modeled in design modular. The tube used is the U tube type with triangular fin whose dimension is shown in the above chapter. The meshing has been done in the ICEM Meshing method and the solver used for the simulation is CFD. The model of Heat Exchanger is shown in the figure 1.          Optimum utilization of energy, the equipment used in industries, must be efficient .By using shell and tube heat exchanger with a nanofluid and fins along tubes, heat transfer from the system can be increased to a great extent. The works that can be done in future are use different materials of the tube and shell for analysis, Injection of air bubbles can further add to heat transfer rate and use different combination Nanofluids and different shape of fin for analysis.