International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 02 | Feb -2017
p-ISSN: 2395-0072
www.irjet.net
A Review on Investigation of Shell and Tube Heat Exchanger For Different Parameter Vishal H Acharya1 1ME
scholar, Mechanical Department, LDRP-ITR, Gandhinagar, India. ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - A heat exchanger is a device that is used to
transfer thermal energy (enthalpy) between two or more fluids, at different temperatures and in thermal contact The tube diameter, tube length, shell types etc. are all standardized and are available only in certain sizes and geometry. And so the design of a shell-and-tube heat exchanger usually involves a trial and error procedure where for a certain combination of the design variables the heat transfer area is calculated and then another combination is tried to check if there is any possibility of reducing the heat transfer area. A primary objective is the estimation of the minimum heat transfer area required for a given heat duty. Some experts studied on the design, performance analysis and simulation studies on heat exchangers. Modeling is a representation of physical or chemical process by a set of mathematical relationships that adequately describe the significant process behavior. These models are often used for Process design, Safety system analysis and Process control. A steady state model for the outlet temperature of both the cold and hot fluid of a shell and tube heat exchanger will be developed and simulated, which will be verified with the experiments conducted. And various models developed according to the change in physical parameters & results are obtained. These models were developed using latest computers tools like ANSYS, Fluent, and MATLAB etc.. The obtained results were also evaluated by comparing the same with the industrial operating exchanger and found satisfactory Key Words: Shell and Tube Heat Exchanger (STHE), Flow behaviour, Computational Fluid Dynamic (CFD)
1.INTRODUCTION Heat exchanger is device use for the transfer of heat between two fluids that are at different temperature with or without contact each other. Heat exchanger has variety of type such as that recuperator, regenerator, tube, plat etc.
Fig-1: shell and tube heat exchanger [5] A shell and tube heat exchanger (STHE) is the very common type of heat exchanger. It better type of heat exchanger used © 2017, IRJET
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Impact Factor value: 5.181
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in oil corporation and other biggest chemical processes. It is sufficient condition for high pressure and temperature. Their name mentions that type of heat exchanger include shell (large pressure vessel) with bunch of tube inside shell. One fluid flow through tubes and another fluids flow around the tube (through the shell) to transmission heat between fluids. The set of tubes is called tube bundle, and various type of tube: plain, helical, longitudinally, finned. This type of heat exchanger have larger ratio of heat transfer surface area to volume. They are easy to produce in high range of size and flow. Another important part baffle during process and help to prevent vibration. Second it’s providing flow path of shell fluid for effective velocity and flow.
2. LITRETURE REVIEW The main purpose of researches are modified and improve STHE for reducing pressure drop, pumping cost and fouling with maximize heat transfer coefficient, heat transfer rate, performance and effectiveness.
2.1 Design modify with different tube geometry N.Jamshidi work for intensify the heat transfer rate in STHE experimentally. The heat transmitted coefficient calculated by Wilson plot method. Taguchi method was use for determine the most favourable parameter such as pitch, diameter of tube, mass flow rate of fluid. The best result for heat transfer rate obtained by large coil diameter, coil pitch and suitable condition by nusselt number [11]. S.Rozzi is use STHE in Food Corporation. He is considering convective heat and friction loss in modify helical tube experiment with Newtonian and non Newtonian fluids. The results show that in higher heating than cooling at higher Reynolds number [19]. R.Hosseini conduct experimental work with three tube (smooth, corrugated and with micro fins) compare with theoretical data. The result obtained with Nusselt, Euler, Reynolds and Prandtl number. Here vary the number the performance of STHE changed over three tubes. We show that micro fin give higher performance than other tube at higher product of Reynolds and Prandtl number. Here experimental work result near the theoretical work at higher Reynolds number [15].Vindhya conduct investigation with various flow condition, insulations, turbulence to determine effect of each. She is determine various insulation effect on heat transfer rate. It’s conduct thermal analysis with various loads. Find the effectiveness by software and compare with ISO 9001:2008 Certified Journal
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