Maximum versus Minimum Entropy Generation: Theoretical Developments and Applications
A special issue of Entropy (ISSN 1099-4300).
Deadline for manuscript submissions: closed (31 July 2015) | Viewed by 49929
Interests: irreversible thermodynamics; quantum thermodynamics; thermodynamics of biosystems; exergoeconomics; econophysics; sustainability
Special Issues, Collections and Topics in MDPI journals
Interests: thermodynamics, solar energy, thermal conductivity
Applied thermodynamics is the science of both energy and its best use, in relation to the available energy resources. Applied thermodynamics concerns energy and energy transformations, including power production and refrigeration, and the relationships among the properties of matter, including living matter.
The first law of thermodynamics expresses the conservation of the energy, while the second law states that entropy continuously increases for the system and its environment. The second law highlights that energy has quality as well as quantity, and any process occurs with a consequent decrease in this quality.
Nicolas Léonard Sadi Carnot’s study of heat engines revealed the existence of a readily calculable limit for any conversion rate of heat into work. Entropy was introduced by Rudolf Clausius to analyze dissipative processes. Louis Georges Gouy (in 1889) and Aurel Stodola (1905) independently proved that the lost exergy in a process is proportional to the entropy generation. Then, Ilya Prigogine (in 1947) and Hans Ziegler (in 1957) proved, respectively, that a non-equilibrium system develops in a way that attains the minimum entropy production and the maximum entropy production under the present constraints. Moreover, Prigogine extended this approach to complex systems in physics, chemistry, and biology.
In 1982, Adrian Bejan introduced the minimum entropy generation approach, which is an optimization method for engineers’ designs. Then, he developed an improvement, named the constructal law, which is particularly effective for explaining the optimal shapes of natural structures.
All these approaches allow us to highlight the need for a unified thermodynamic approach to complex system evolution, based on the analysis of the interaction between systems and environment, by considering the flows across the system's border.
Prof. Giuseppe Grazzini
Dr. Umberto Lucia
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- entropy generation
- open systems
- complex systems
- constructal theory
- maximum entropy generation
- minimum entropy generation
- second law analysis
- quantum thermodynamics
- non-conventional application of the second law