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Full Description
This book introduces new physcial quantities in heat transfer optimization. Its focus diverges from traditional heat transfer enhancement, which was proposed in the 1970s in response to the global energy crisis. By drawing an analogy between heat conduction and electrical conduction, and through derivations from the energy conservation equation, this book presents the concept of entransy, demonstrates that it invariably decreases during spontaneous heat transfer in isolated systems, and entransy dissipation can serve as a measure of heat transfer irreversibility. On this basis, this book reveals fundamental principles for heat transfer optimization, such as the least action for heat transfer, the entransy extremum and the minimum entransy dissipation resistance. In addtion, this book presents the utilization of the entransy balance equation as a global constraint for the optimization of thermal and thermodynamic systems, along with heat current models employed in system analyses. This book is intended for senior undergraduate and graduate students with an interest in thermal engineering, as well as researchers working on heat transport systems in fields such as architecture, electronics, aerospace, and chemical engineering.
Contents
Entropy and entransy.- Optimization Principles for Heat Conduction and Applications.- The principle of minimum entransy resistance for convective heat transfer and its applications.- Principle of minimum entransy resistance for heat exchangers.- Entransy analyses of heat transfer processes with phase change and variable thermophysical properties.- Application of entransy analyses in heat exchange system.



