Teknisk termodynamik

This textbook presents the fundamental concepts and theories in thermal physics and elementary statistical mechanics in a very simple, systematic and comprehensive way. This book is written in a way that it presents the topics in a holistic manner with end-of-chapter exercises and examples where concepts are supported by numerous solved examples and multiple-choice questions to aid self-learning. The textbook also contains illustrated diagrams for better understanding of the concepts. The book will benefit students who are taking introductory courses in thermal physics, thermodynamics and statistical mechanics.

"The second of two volumes builds on the foundational material on ergodic theory and geometric measure theory provided in Volume I, and applies all the techniques discussed to describe the beautiful and rich dynamics of elliptic functions. The text begins with an introduction to topological dynamics of transcendental meromorphic functions, before progressing to elliptic functions, discussing at length their classical properties, measurable dynamics and fractal geometry. The authors then look in depth at compactly non-recurrent elliptic functions. Much of this material is appearing for the first time in book or paper form. Both senior and junior researchers working in ergodic theory and dynamical systems will appreciate what is sure to be an indispensable reference"--

Entropie ist die wichtigste und zugleich am schwierigsten verstandliche Groe der Thermodynamik. Viele Menschen sind mit ihrer traditionellen Herleitung unzufrieden, weil sie sich entweder auf Begriffe wie ,,Temperatur"e; und ,,Warme"e; stutzt, die sich nur mittels der Entropie genau definieren lassen, oder weil sie Konzepte wie ,,molekulare Unordnung"e; enthalt, die nicht in eine makroskopische Theorie passen. Die Physiker Elliott Lieb und Jakob Yngvason haben mittlerweile eine Formulierung der Thermodynamik entwickelt, die frei von den genannten Mangeln ist. Diese fut auf dem Begriff der adiabatischen Erreichbarkeit, aus dessen Eigenschaften das Entropieprinzip als Hauptaussage der Thermodynamik abgeleitet wird. Das Entropieprinzip ubernimmt die zentrale Rolle der Hauptsatze der Thermodynamik, die Temperatur verwandelt sich aus einem Grundbegriff in eine abgeleitete Groe, der Begriff der Warme wird entbehrlich. Sieben anschauliche Beispiele zur Anwendung der Entropie, Schritt fur Schritt vorgerechnet und ausfuhrlich erlautert, runden die Darstellung ab.

This edited volume on combustion technology covers recent developments and provides a broad perspective of the key challenges including micro-combustion system, hydrogen combustor, combustion systems for gas turbine and IC engine, coal combustor for power plant and gasifier system, and combustion system pertaining to aerospace.

This book describes useful analytical methods by applying them to real-world problems rather than solving the usual over-simplified classroom problems. The book demonstrates the applicability of analytical methods even for complex problems and guides the reader to a more intuitive understanding of approaches and solutions.Although the solution of Partial Differential Equations by numerical methods is the standard practice in industries, analytical methods are still important for the critical assessment of results derived from advanced computer simulations and the improvement of the underlying numerical techniques. Literature devoted to analytical methods, however, often focuses on theoretical and mathematical aspects and is therefore useless to most engineers. Analytical Methods for Heat Transfer and Fluid Flow Problems addresses engineers and engineering students.The second edition has been updated, the chapters on non-linear problems and on axial heat conduction problems were extended. And worked out examples were included.

The most exciting and significant episode of scientific progress is the development of thermodynamics and electrodynamics in the 19th century and early 20th century. The nature of heat and temperature was recognized, the conservation of energy was discovered, and the realization that mass and energy are equivalent provided a new fuel, ¿ and unlimited power. Much of this occurred in unison with the rapid technological advance provided by the steam engine, the electric motor, internal combustion engines, refrigeration and the rectification processes of the chemical industry. The availability of cheap power and cheap fuel has had its impact on society: Populations grew, the standard of living increased, the envir- ment became clean, traffic became easy, and life expectancy was raised. Knowledge fairly exploded. The western countries, where all this happened, gained in power and influence, and western culture ¿ scientific culture ¿ spread across the globe, and is still spreading. At the same time, thermodynamics recognized the stochastic and probabilistic aspect of natural processes. It turned out that the doctrine of energy and entropy rules the world; the first ingredient ¿ energy ¿ is deterministic, as it were, and the second ¿ entropy ¿ favours randomness. Both tendencies compete, and they find the precarious balance needed for stability and change alike.

This book discusses heat transfer in underground energy systems. It covers a wide range of important and practical topics including the modeling and optimization of underground power cable systems, modeling of thermal energy storage systems utilizing waste heat from PV panels cooling. Modeling of PV pannels with cooling. While the performance of energy systems which utilize heat transfer in the ground is not yet fully understood, this book attempts to make sense of them. It provides mathematical modeling fundaments, as well as experimental investigation for underground energy systems. The book shows detailed examples, with solution procedures. The solutions are based on the Finite Element Method and the Finite Volume Method. The book allows the reader to perform a detailed design of various underground energy systems, as well as enables them to study the economic aspects and energy efficiency of underground energy systems. Therefore, this text is of interest to researchers, students, and lecturers alike.

This volume of the Encyclopedia of Sustainability Science and Technology, Second Edition, describes technologies that actively convert solar radiation into useful heat in a temperature range from just above ambient up to more than 1,000(deg)C. Applications cover a broad range of energy services such as space heating, cooking, domestic hot water supply, electrical power generation, and high temperature thermochemical processes. The major developments that have led to currently available technologies for solar thermal energy applications were initiated mainly after the first oil shock in 1973. Solar thermal energy is widely used already for heating purposes (water, space) in the "e;low"e; temperature range up to about 100(deg)C employing mainly nonconcentrating collectors, whereas higher temperatures can be achieved with more sophisticated solar collector technologies. Temperatures over 200(deg)C typically require concentrating solar radiation using mirror systems. Several different technologies are described in detail in this volume, including solar collector systems in the lower temperature range, the direct use of solar radiation for food processing, namely cooking and drying, the production of electricity through conversion of solar radiation first to heat, driving a mechanical conversion system coupled to an electric generator, the use of solar radiation to drive chemical processes, and many more.

zum Neudruck der zwolften Auflage. Die im Mai 1948 erschienene. neu bearbeitete zwolfte Auflage war schon nach Pis Jahren wieder vergriffen. Der schmerzliche Tod des Herrn Professor Grober macht die Wahl eines neuen Herausgebers fur die nachste Auflage notwendig. Bis zu deren Erscheinen durfte daher langere Zeit vergehen. Aus diesem Grund legt der Verlag hiermit zunachst einen photomechanischen Neudruck der zwolften Auflage vor. um so der dauernden Nachfrage nach dem Buch zu entsprechen. Die letzte Auflage enthielt leider zahlreiche Druckfehler und Unstimmigkeiten, die in diesem Neudruck samtlich berichtigt sind. Im Interesse der Leser erscheint es daher notwendig, einen ausfuhrlichen Berichtigungsnachtrag zusammenzu- stellen, der den Kaufern der zwolften Auflage auf Wunsch unberechnet zur Verfugung steht. Erwahnt sei, da fur den Nachtrag die Seite 280 des Buches mit dem Beispiel einer Warmebedarfsberechnung und die Zahlen tafel 12 mit a den Gewichten von 1 m Warmwasser vollig neu gesetzt wurden. Den Lesern, die auf Fehler in der letzten Auflage aufmerksam machten, sei an dieser Stelle, auch im Namen des Verlages, gedankt. Bei der Zusammen- stellung der Berichtigungen hat mich Herr Dipl.-Ing. Lenz vom Lehrstuhl fur Heizung und Luftung der Techntschen Universitat in Berlin in dankenswerter Weise unterstutzt. Berlin, im Mai 1950. Dr. habil. F. Bradtke. Inhaltsverzeichnis. Seite Einleitung ................................................................... 1 Erster Teil Beschreibung der Heiz-und Liutungsanlageno Erster Abachnitt. Ofeuheizung.

Il presente volume raccoglie numerosi esercizi completamente risolti e commentati. I procedimenti di calcolo sono spiegati dettagliatamente, con richiami alla teoria di base ed alle equazioni che governano i principi della termodinamica. Gli argomenti trattati seguono i programmi dei corsi di Termodinamica Applicata e fanno riferimento a situazioni reali, riscontrabili nelle usuali applicazioni civili e industriali. Si è cercato quindi di evitare esercizi di argomentazione astratta, evidenziando come la termodinamica è applicata continuamente nelle attività di ogni giorno, ad esempio nei motori endotermici delle autovetture, nei frigoriferi, negli impianti di conversione dell'energia e di climatizzazione (riscaldamento e condizionamento dell'aria). L'approccio semplice ed intuitivo ed il modestissimo ricorso a tecniche matematiche rendono il libro fruibile con facilità da parte di tutti gli studenti universitari impegnati nello studio dei corsi di Termodinamica.