Comparison of entropy generation minimization principle and entransy theory in optimal design of thermal systems
Publish place: Energy Equipment and Systems، Vol: 6، Issue: 3
Publish Year: 1397
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_EES-6-3_008
تاریخ نمایه سازی: 11 خرداد 1398
Abstract:
In this study, the relationship among the concepts of entropy generation rate, entransy theory, and generalized thermal resistance to the optimal design of thermal systems is discussed. The equations of entropy and entransy rates are compared and their implications for optimization of conductive heat transfer are analyzed. The theoretical analyses show that based on entropy generation minimization principle by decreasing irreversibility, thermodynamic optimization can be obtained. Significantly, the entransy concept merely describes the heat transfer ability and the minimum and maximum entransy dissipation principle can only lead to thermal optimization. However, due to decreasing thermal resistance both principles are considered as optimization tools for the optimal design of energy and thermal systems. Also, it is shown that the concept of entransy theory is more suitable than the concept of entropy generation for optimizing the performance of heat transfer processes.
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Authors
Mojtaba Haratian
Department of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran
Majid Amidpour
Department of Energy Systems Engineering, Faculty of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran
Aliasghar Hamidi
Department of Chemical Engineering, Tehran University , Tehran, Iran
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