International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 03 | Mar 2024
p-ISSN: 2395-0072
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CFD Analysis of Shell and Tube Heat Exchanger with Flower Baffle Attached in the Tube Side of the Heat Exchanger with SiO2 Nanofluid Water as a Base Fluid Aman Kumar1, Ajay Singh2, Nitin Barodia 3 1MTech Student, Dept. of Mechanical Engineering, Radharaman Institute of Technology and Science, Bhopal, M.P.,
India
2Professor, Dept. of Mechanical Engineering, Radharaman Institute of Technology and Science, Bhopal, M.P., India 3Professor,
Dept. of Mechanical Engineering, Radharaman Institute of Technology and Science, Bhopal, M.P., India
---------------------------------------------------------------------***--------------------------------------------------------------------and tube heat exchanger consists of a collection of tubes contained within a shell. The baffle plates are one of the essential barriers situated within the shell to create turbulence which will boost the rate of heat transfer and also offer support to the lengths of the tube. Various types of baffle plates are employed in the shell and tube heat exchanger, including longitudinal flow baffles, impingement baffles (used to safeguard the bundle in cases of high entrance velocity), and orifice baffles. Heat exchangers are an integral part of the sectors such as: power plants, process industries, oil refining and so on. Shell and tube heat exchangers (STHE) currently account for 40% of the equipment used in various industries. Hence, it is vital to prioritise attention on this equipment in order to enhance the functionality of this gadget. Baffles and tube configuration and their arrangement have a tremendous effect on the performance of this kind of heat exchanger. One can refer to common segmental baffle problems as: creation of fouling in dead zone, producing high pressure drop because of dead zones, remarkable flow streams between shell and baffle, tube and baffle because of construction tolerance and decreasing the lifetime of the heat exchanger due to the vibration caused by the fluid flow across the tube bundle [1,2]. Gao et al. [3] studied the discontinuous baffle with different angles experimentally. Their result show that 40° helix angle is the best among the other investigated helix angles [3]. In an industrial research project in Tabriz, Zeyninejad Movassag et al. [4], employing helical baffle as an alternative of segmental baffle, enhanced the performance of the conventional shell and segmental baffle STHE by minimising the pressure drop and fouling. In another experiment, Nemati Taher et al. [5] examined numerically the impact of baffle spacing for the helical baffle STHE. They employed baffles with angle of 20-degree. In the new technique by You et al. [6], they evaluated the computationally based on the porosity and permeability idea in the range of Reynolds numbers from 6,813 to 22,326. Wang et al. [7] proposed floral baffled STHE in an experimental research and compared its performance with ordinary segmental baffle. Wang et al. [7] examined thermohydraulic properties of STHE with different type of helical baffle to decrease triangular zones. Helical baffle was
Abstract - A CFD analysis of a shell and tube heat
exchanger with a creative floral baffle design is shown in the abstract. The purpose of the study is to assess how the floral baffle affects convective heat transfer coefficient and heat transfer rate. Conventional baffles are frequently used in traditional heat exchangers, which may reduce their total thermal efficiency. The goal of the flower baffle is to improve the heat exchanger's thermal performance by drawing inspiration from the complex and effective forms seen in nature. The fluid flow and heat transfer properties are analysed and contrasted with a typical heat exchanger setup with traditional baffles using CFD simulations and numerical modelling. The heat exchanger fitted with the floral baffle performs at a much higher rate of heat transfer than the traditional design, according to the CFD study. Additionally, there is a discernible improvement in the convective heat transfer coefficient, suggesting a more effective heat exchange mechanism with lower thermal resistances. To sum up, the new floral baffle design shows a lot of promise for raising the shell and tube heat exchangers' heat transfer efficiency. This discovery has significant implications for sectors including power generation, chemical processing, and refrigeration that depend on heat exchangers. To verify the numerical results and determine if the suggested floral baffle design is practically applicable, more investigation and experimental validation are needed. If successful, the flower baffle could revolutionize heat exchanger technology, contributing to enhanced energy efficiency and sustainability across various industrial sectors. Key Words: Shell and Tube Heat Exchanger, Nanofluid, Flower Baffle, Rate of Heat Transfer, ANSYS, CFD Analysis 1. INTRODUCTION A heat exchanger is a mechanical apparatus that recycles the thermal energy contained within the working fluid. The shell and tube are a versatile heat exchanger due to its versatility in design and is extensively used in various sectors for cooling of turbine and compressor, oil industries, for refrigeration and air conditioning, and many more. The shell
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