Guest Editors
Lingala Syam Sundar, Assistant Professor, College of Engineering, Department of Mechanical Engineering, Prince Mohammad Bin Fahd University, Saudi Arabia
Lingala Syam Sundar is an Assistant Professor at the College of Engineering, Department of Mechanical Engineering, Prince Mohammad Bin Fahd University, Saudi Arabia. He received his Ph.D. in Energy Systems and MTech in Thermal Engineering from the Department of Mechanical Engineering, Jawaharlal Nehru Technological University-Hyderaabd, India, in 2010 and 2003. He conducted FCT-funded post-doctoral research at the Department of Mechanical Engineering, University of Aveiro, Aveiro, Portugal. He has published more than 150 papers in the SCI journals such as International Journal of Heat and Mass Transfer, Applied Thermal Engineering, International Journal of Thermal Sciences, Journals of Heat Transfer and Turbomachinery -Transactions of the ASME, Heat Transfer Engineering for the fields of heat transfer enhancement, cooling of gas turbine rotor blade, electronic cooling, piston cooling, thermal analysis of electric motors, heat pipes and thermosyphons. He is in the top 2% tier of scientists' ranking elaborated by Stanford University.
Antonio C.M. Sousa, Professor, Department of Mechanical Engineering, University of Aveiro, Portugal
Antonio C. M. Sousa received his PhD in Mechanical Engineering (Thermal-Fluids) from the Victoria University of Manchester (UMIST), England, UK, in 1976. Prior to his graduate studies, he had three years of academic and industrial activity. He joined the Department of Mechanical Engineering, University of Brasília, Brazil soon after the award of his PhD degree, first as Associate Professor and Director of Graduate Studies and later on as Acting Chair. Late in 1977, he moved, as Senior Engineer and Head of the Thermal-Fluids Division of the Fuel Department, to the Brazilian Nuclear Companies, SA, Rio de Janeiro, Brazil. He participated in the First Fuel Reload Project of Angra I Westinghouse 600 MWe PWR. After the project was successfully completed in 1980, he took an Associate Professorship with the Department of Mechanical Engineering, University of New Brunswick (UNB), Canada; in 1985 he was promoted to Full Professor. In 2010, he retired from University of New Brunswick. Since then, he has collaborated with University of Aveiro (Portugal) and Guangzhou Institute of Energy Conversion – Chinese Academy of Sciences. He published more than 120 SCI international journal publications in, among others, International Journal of Heat and Mass Transfer, International Journal of Thermal Sciences, Journal of Heat Transfer-Transactions of the ASME, Journal of Thermal Analysis and Calorimetry, Journal of Thermal Science and Engineering Applications, Heat Transfedr Research, and Sustainable Energy Technologies and Assessments.
Summary
All energy systems follow the first law and second law of thermodynamics. Based on the first law of thermodynamics, energy can neither be created nor destroyed; however, it can be transferred as heat or work. The convectional thermodynamic is related to the law of conservation of energy. An energy analysis of an energy conversion system is essentially an accounting of the energies entering and exiting the system. The thermodynamic losses within a system are often not accurately identified by the first law and need to be assessed by recurring an analysis based on the second law.
The analysis of entropy generation and exergy loss is often used with the aim of optimizing the performance of energy conversion systems such as gas turbines, heat exchangers, steam turbines, pumps and internal combustion engines, among others. The sources of the exergy loss, for instance, of the combustion process, which can be highly irreversible, can be evaluated by analyzing the local entropy generation.
Exergy analysis is a practical approach to evaluating the merit of energy conversion or distribution processes and systems. Exergy analysis involves the application of exergy concepts, balances, and efficiencies to evaluate and improve energy and other systems.
Entropy is a general measure commonly used for qualitative and quantitative analyses of complex systems. Considering the recent advances in the field of thermodynamic systems concerning entropy generation and exergy analysis, this Special Issue aims to attract novel concepts and promising methods arising from the field of entropy generation and exergy analysis that are applicable to various applications.
This Special Issue will accept unpublished original papers and comprehensive reviews focused on, but not restricted to the following research areas:
• Development of entropy generation theory
• New ideas related to the entropy – theoretical concepts
• New ideas related to the entropy – experimental concepts
• Algorithms for analysis of time sequences and entropy calculation
• Exergy analysis of complex systems
• New exergy analysis approaches leading to:
1) Cooling enhancements of internal combustion engines;
2) Performance enhancement of heat pipes, thermosyphons and vapor chambers;
3) Heat/mass transfer enhancement in proton-exchange membrane fuel cells;
4) Heat transfer enhancement by turbulence generation technology;
5) Effective solar and geothermal energy harvesting;
6) Higher heat exchanger effectiveness;
7) Enhanced electronic cooling; and, in general,
8) Novel methods dealing with experiments, modeling and simulation of heat transfer enhancement.
Keywords
Entropy generation; Exergy analysis; Energy conversion systems; Novel thermodynamic concepts
Published Papers
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