Optimization design of shell-and-tube heat exchanger by entropy generation minimization and genetic algorithm |
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| Authors: | Jiangfeng Guo Lin Cheng Mingtian Xu |
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| Affiliation: | 1. Department of Mechanical Engineering, Siddaganga Institute of Technology, Tumkur 572103, Karnataka, India;2. Department of Mechanical Engineering, PES University, 100 Ft. Ring Road, Banashankari III Stage, Bangalore 560 085, India;3. Department of Mechanical Engineering, Jawaharlal Nehru Technological University, Anantapur 515002, Andhra Pradesh, India;1. Pontifical Catholic University of Paraná (PUCPR), Mechanical Engineering Graduate Program (PPGEM), Curitiba, PR, Brazil;2. Pontifical Catholic University of Paraná (PUCPR), Industrial and Systems Engineering Graduate Program (PPGEPS), Curitiba, PR, Brazil;3. Federal University of Technology of Paraná (UTFPR), Academic Department of Electronics, Curitiba, PR, Brazil;4. Federal University of Paraná (UFPR), Department of Electrical Engineering, Curitiba, PR, Brazil;1. School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China;2. School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China;1. Department of Mechanical Engineering, University of Cape Town, Cape Town, South Africa;2. Department of Mechanical Engineering, University of Ibadan, Ibadan, Nigeria;1. Centre for Intelligent Systems Research (CISR), Deakin University, Geelong, VIC 3217, Australia;2. Department of Mechanical Engineering, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran |
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| Abstract: | In the present work, a new shell-and-tube heat exchanger optimization design approach is developed, wherein the dimensionless entropy generation rate obtained by scaling the entropy generation on the ratio of the heat transfer rate to the inlet temperature of cold fluid is employed as the objective function, some geometrical parameters of the shell-and-tube heat exchanger are taken as the design variables and the genetic algorithm is applied to solve the associated optimization problem. It is shown that for the case that the heat duty is given, not only can the optimization design increase the heat exchanger effectiveness significantly, but also decrease the pumping power dramatically. In the case that the heat transfer area is fixed, the benefit from the increase of the heat exchanger effectiveness is much more than the increasing cost of the pumping power. |
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