PPS: We are aware that the thermal phenomena are elusive and coupled with other energy forms. Therefore, the entropy is always produced, locally and thus integrally or globally, and there is no way to destroy entropy, since it will be against the forced energy transfer from higher to lower potential. However, if heat is converted to work (like in heat engines), the thermal energy is reduced while transferred to a lower-temperature thermal reservoir, however, the entropy (as ratio of thermal heat to absolute temperature) will not be reduced but conserved in ideal, reversible processes ( Q rev/T=const, Carnot Ratio Equality), or even the entropy will be produced (generated) in real (irreversible) processes for the amount of dissipated work-potential to stored heat (or thermal energy) per absolute temperature, regardless that the thermal energy is reduced (converted to work). As heat is generated due to dissipation of any work potential to heat, the entropy is irreversibly produced. It is an integral measure of thermal energy per absolute temperature of a system (transferred as heat into and generated heat within, due to work potential dissipation to thermal heat). " E ntropy is associated with stored-heat within a material system, i.e. Sadi Carnot's Reflections Clausius Theory of Heat < Elusive Nature of Entropy, Nature of Thermal and Mechanical Energy Transfer and Reflections on the Caloric Theory and Thermal Energy. The Second Law and Entropy Misconceptions Demystified. (2019) : Topical Collection "Foundations and Ubiquity of Classical Thermodynamics" * Kostic, M.M. (2018) : Nature of Heat and Entropy: Fundamentals and Applications for Diverse and Sustainable Future (2016) : Exploring the Second Law of Thermodynamics (2013): Entropy and the Second Law of Thermodynamics Special Issues in Entropy journal edited by Prof. Thermodynamics Section of Entropy Journal * Flier The Elusive Nature of Entropy and Its Physical MeaningÄepartment of Mechanical Engineering, Northern Illinois University Entropy Generation Results of Convenience But without Purposeful Analysis and Due Comprehension- Editorial. See also The Second Lawand Challenges to the Second Law Challengers S I
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