International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 03 | Mar 2024
p-ISSN: 2395-0072
www.irjet.net
Review on design optimization in shell and tube type heat exchanger P Pavana, C Elsona, M Rahula, S Preeta, Mr. Hemang R. Dhameliyab and Pravin zinzalab aMechanical Engineering, L. J. University, Ahmedabad, India; bMechanical engineering department, L.J. University, Ahmedabad, India
----------------------------------------------------------------------------***-------------------------------------------------------------------------Abstract: This is a review paper based on design optimization of shell and tube type heat exchanger (STHE). It contains numbers of parameters which influence the increased heat transfer of STHE. For designing of STHE, TEMA standards are used to define the main configuration of exchangers and their classification for industry use. They are used along with the ASME code to design and fabricate exchangers, as well as customer specifications. We include the future works suggested to enhance the design to increase the effectiveness of STHE. Required results also included in our paper.The design optimization of STHE is done to achieve the desired heat transfer rate while considering various aspects. This optimization process typically involves minimizing factors like initial cost, operating cost, pressure drop, heat transfer area, weight, or material usage.
1.Introduction: Shell and Tube heat exchangers are widely used in various industries and applications, including boilers, oil coolers, condensers, pre-heaters, and refrigeration and air conditioning systems .The design of a heat exchanger involves determining the minimum heat transfer area required for a given heat duty, which directly affects the overall cost of the exchanger .The design engineer needs an efficient strategy to search for the global minimum, considering various design variables such as outer diameter, pitch, length of the tubes, tube passes, baffle spacing, and baffle cut .The thermal analysis and design of shelland-tube heat exchangers are essential topics for mechanical, thermal, and chemical engineering scholars in their curriculum and research activities[11].The paper focuses on the use of graphene nanofluids to enhance the thermal performance of a vertical shell and tube heat exchanger[1]. shell and helically coiled tube heat exchangers (SHCTHEXs) which are compact and have a larger heat transfer area compared to traditional models. The authors collected information on 21 different SHCTHEXs from a catalog for modeling purposes. Artificial neural network structures were created to predict heat transfer coefficient, pressure drop, Nusselt number, and performance evaluation criteria values. Inputs for the network structures included tubing and coil diameters, Reynolds and Dean numbers, curvature ratio, and mass flow rate[2]. The optimization of segmental baffle (STHE) by using combined baffle and ribbed tube configurations. The authors investigate the performance of triangular and circular ribbed tubes in STHE optimization. Considers the heat transfer coefficient, thermal performance, and pressure drop as major factors for evaluating the STHE. The complexity of baffles is found to enhance heat transfer but also results in higher pressure drop, requiring more pumping power and reducing system efficiency. The paper aims to minimize dead zones and pressure drop to improve heat transfer and overall system efficiency[3].Metal foam and fins are commonly used structures to enhance heat transfer in shell-and-tube heat storage units. The optimal structure for energy storage performance is still unclear, and a comparison between metal foam and fins is needed[4].The study aims to address the uncertainties in the inlet and outlet temperatures, pressure drop factor, friction factor, Nusselt number, heat transfer coefficient, and pressure drop in the shell .A multi-criteria decision-making method is applied to select the best solution among the alternatives that satisfy the problem's constraints [5].The rapid growth of the industrial world, especially in the tourism sector, has led to an increased need for energy, with hotels being one of the largest energy users, particularly in terms of electrical energy consumption .Energy efficiency efforts are crucial to mitigate the energy crisis and ensure the sustainability of the tourism industry .One approach to energy recovery in the hotel industry is utilizing wasted heat energy from air conditioning systems, which can be used as additional energy for heating water .The design of a heat exchanger plays a crucial role in this energy recovery process, and technical dimensions, flow patterns, material selection, and heat transfer criteria are key challenges in heat exchanger design[6] .The counterflow configuration is considered the most effective for analysis in STEs. The Tubular Exchanger Manufacturers Association (TEMA) sets the standard for heat exchanger construction. Computational methods, such as CFD simulations, are extensively used to reduce experimental cost and time in analyzing heat exchangers[7].The design of shell and tube heat exchangers involves two parts: the shell side and the tube side, with the shell side being more complex[8].The effectiveness of the design parameters and boundary conditions is evaluated through the CFD simulations. The theoretical analysis results are compared with the CFD predictions to validate the accuracy of the simulation approach[12].Tube layout is identified as a key parameter in the analysis of shell and tube heat exchangers[13].The design of
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