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John Reizes - One of the best experts on this subject based on the ideXlab platform.

  • A New Approach to Understanding Engineering Thermodynamics From Its Molecular Basis
    Volume 5: Education and Globalization; General Topics, 2012
    Co-Authors: W. John Dartnall, John Reizes
    Abstract:

    Engineering Thermodynamics is that Engineering science in which students learn to analyze dynamic systems involving energy transformations, particularly where some of the energy is in the form of heat. It is well known that people have difficulty in understanding many of the concepts of Thermodynamics; in particular, entropy and its consequences. However, even more widely known concepts such as energy and temperature are not simply defined or explained. Why is this lack of understanding and clarity of definition prevalent in this subject? Older Engineering Thermodynamics textbooks (often containing the words heat engines in the title) had a strong emphasis in their early chapters on the general physical details of thermodynamic equipment such as internal and external combustion engines, gas compressors and refrigeration systems. The working fluid in these systems might expand or contract while heat, work and mass might cross the system boundary. The molecular workings within the thermodynamic fluid are not of prime concern to the engineer even though they are to a physicist or chemist. Modern Engineering Thermodynamics textbooks place great emphasis on mathematical systems designed to analyze the behavior and performance of thermodynamic devices and systems, yet they rarely show, at least early in their presentation, graphical images of the equipment; moreover, they tend to give only passing reference to the molecular behavior of the thermodynamic fluid. This paper presents some teaching strategies for placing a greater emphasis on the physical realities of the equipment in conjunction with the molecular structure of the working fluid in order to facilitate a deeper understanding of thermodynamic performance limitations of equipment. Copyright © 2012 by ASME.

  • Developing innovative teaching materials that use molecular simulations in Engineering Thermodynamics
    Volume 6: Engineering Education and Professional Development, 2010
    Co-Authors: W. John Dartnall, John Reizes
    Abstract:

    Traditionally, Engineering Thermodynamics is presented to undergraduate mechanical Engineering students from a classical viewpoint. The emphasis in the courses is on analyzing processes involving bulk thermodynamic properties of materials to ascertain the performance of systems of significant size such as internal combustion engines, steam boiler power plants, vapour compression refrigeration systems, gas compressors etc. This emphasis may need to change so that mechanical engineers gain a better understanding of areas such as nanotechnology, fuel cells, photovoltaic cells and solid state electronics. A further need for change, is because Thermodynamics, as a subject, has a reputation that many students apply formulae in a rote-like manner and struggle to understand the underlying physics and practicalities. One of our innovations is to use simple one and two dimensional hard sphere simulations to demonstrate the validity of such basic constants as Avogadro’s Number and the Boltzman constant, and then visually demonstrate the ideal gas equation explaining concepts such as temperature and pressure and the way in which they relate to the volume containing a specified number of molecules. The underlying mechanical/physical reasons for the idealizations and processes of Thermodynamics can be visually demonstrated by simple hard sphere models in ways that are related to mechanics. We outline some examples of simple simulations and innovative teaching materials that model the molecular (microscopic) behaviour on which macroscopic thermodynamic behaviour depends. Initial trials of some of the ideas that have appeared in past congress papers have been or are currently being trialed. These trials have revealed how students tend to follow the “rote learning of formulae and procedure approach” rather than the “physical understanding” approach.Copyright © 2010 by ASME

  • Should Engineering Thermodynamics Include a Simplified Treatment of Its Underlying Molecular Basis
    Volume 6: Emerging Technologies: Alternative Energy Systems; Energy Systems: Analysis Thermodynamics and Sustainability, 2009
    Co-Authors: W. John Dartnall, John Reizes, Geoff Anstis
    Abstract:

    Engineering Thermodynamics is commonly treated at undergraduate level as “classical Thermodynamics and its applications”. Recent publications, using one dimensional simulations employing hard spheres have proposed ways to obtain the laws of Thermodynamics. These models help to explain the state laws, the limitation of the Carnot cycle relationship as well as difficult concepts like entropy. The models, although deterministic, are able to demonstrate the probabilistic behaviour, normally explained by the mathematically sophisticated derivations of Statistical Mechanics. Is it time to include a simplified, mechanistic explanation of Engineering Thermodynamics by deriving it from its molecular basis?Copyright © 2009 by ASME

W. John Dartnall - One of the best experts on this subject based on the ideXlab platform.

  • A New Approach to Understanding Engineering Thermodynamics From Its Molecular Basis
    Volume 5: Education and Globalization; General Topics, 2012
    Co-Authors: W. John Dartnall, John Reizes
    Abstract:

    Engineering Thermodynamics is that Engineering science in which students learn to analyze dynamic systems involving energy transformations, particularly where some of the energy is in the form of heat. It is well known that people have difficulty in understanding many of the concepts of Thermodynamics; in particular, entropy and its consequences. However, even more widely known concepts such as energy and temperature are not simply defined or explained. Why is this lack of understanding and clarity of definition prevalent in this subject? Older Engineering Thermodynamics textbooks (often containing the words heat engines in the title) had a strong emphasis in their early chapters on the general physical details of thermodynamic equipment such as internal and external combustion engines, gas compressors and refrigeration systems. The working fluid in these systems might expand or contract while heat, work and mass might cross the system boundary. The molecular workings within the thermodynamic fluid are not of prime concern to the engineer even though they are to a physicist or chemist. Modern Engineering Thermodynamics textbooks place great emphasis on mathematical systems designed to analyze the behavior and performance of thermodynamic devices and systems, yet they rarely show, at least early in their presentation, graphical images of the equipment; moreover, they tend to give only passing reference to the molecular behavior of the thermodynamic fluid. This paper presents some teaching strategies for placing a greater emphasis on the physical realities of the equipment in conjunction with the molecular structure of the working fluid in order to facilitate a deeper understanding of thermodynamic performance limitations of equipment. Copyright © 2012 by ASME.

  • Developing innovative teaching materials that use molecular simulations in Engineering Thermodynamics
    Volume 6: Engineering Education and Professional Development, 2010
    Co-Authors: W. John Dartnall, John Reizes
    Abstract:

    Traditionally, Engineering Thermodynamics is presented to undergraduate mechanical Engineering students from a classical viewpoint. The emphasis in the courses is on analyzing processes involving bulk thermodynamic properties of materials to ascertain the performance of systems of significant size such as internal combustion engines, steam boiler power plants, vapour compression refrigeration systems, gas compressors etc. This emphasis may need to change so that mechanical engineers gain a better understanding of areas such as nanotechnology, fuel cells, photovoltaic cells and solid state electronics. A further need for change, is because Thermodynamics, as a subject, has a reputation that many students apply formulae in a rote-like manner and struggle to understand the underlying physics and practicalities. One of our innovations is to use simple one and two dimensional hard sphere simulations to demonstrate the validity of such basic constants as Avogadro’s Number and the Boltzman constant, and then visually demonstrate the ideal gas equation explaining concepts such as temperature and pressure and the way in which they relate to the volume containing a specified number of molecules. The underlying mechanical/physical reasons for the idealizations and processes of Thermodynamics can be visually demonstrated by simple hard sphere models in ways that are related to mechanics. We outline some examples of simple simulations and innovative teaching materials that model the molecular (microscopic) behaviour on which macroscopic thermodynamic behaviour depends. Initial trials of some of the ideas that have appeared in past congress papers have been or are currently being trialed. These trials have revealed how students tend to follow the “rote learning of formulae and procedure approach” rather than the “physical understanding” approach.Copyright © 2010 by ASME

  • Should Engineering Thermodynamics Include a Simplified Treatment of Its Underlying Molecular Basis
    Volume 6: Emerging Technologies: Alternative Energy Systems; Energy Systems: Analysis Thermodynamics and Sustainability, 2009
    Co-Authors: W. John Dartnall, John Reizes, Geoff Anstis
    Abstract:

    Engineering Thermodynamics is commonly treated at undergraduate level as “classical Thermodynamics and its applications”. Recent publications, using one dimensional simulations employing hard spheres have proposed ways to obtain the laws of Thermodynamics. These models help to explain the state laws, the limitation of the Carnot cycle relationship as well as difficult concepts like entropy. The models, although deterministic, are able to demonstrate the probabilistic behaviour, normally explained by the mathematically sophisticated derivations of Statistical Mechanics. Is it time to include a simplified, mechanistic explanation of Engineering Thermodynamics by deriving it from its molecular basis?Copyright © 2009 by ASME

Jay D. Schieber - One of the best experts on this subject based on the ideXlab platform.

  • Molecular Engineering Thermodynamics
    2014
    Co-Authors: Juan J De Pablo, Jay D. Schieber
    Abstract:

    1. Introduction 2. The postulates of Thermodynamics 3. Generalized thermodynamic potentials 4. First applications of Thermodynamics 5. Application to process design: flow systems 6. Statistical mechanics 7. Molecular interactions 8. Fugacity and vapor-liquid equilibrium 9. Activity, vapor-liquid, and liquid-liquid equilibrium 10. Reaction equilibrium 11. Thermodynamics of polymers 12. Thermodynamics of surfaces Appendix A. Mathematical background Appendix B. Fluid equations of state Appendix C. Microscopic balances for open systems Bibliography Index.

  • molecular Engineering Thermodynamics
    2014
    Co-Authors: Juan J De Pablo, Jay D. Schieber
    Abstract:

    Building up gradually from first principles, this unique introduction to modern Thermodynamics integrates classical, statistical and molecular approaches and is especially designed to support students studying chemical and biochemical Engineering. In addition to covering traditional problems in Engineering Thermodynamics in the context of biology and materials chemistry, students are also introduced to the Thermodynamics of DNA, proteins, polymers and surfaces. It includes over 80 detailed worked examples, covering a broad range of scenarios such as fuel cell efficiency, DNA/protein binding, semiconductor manufacturing and polymer foaming, emphasizing the practical real-world applications of thermodynamic principles; more than 300 carefully tailored homework problems, designed to stretch and extend students' understanding of key topics, accompanied by an online solution manual for instructors; and all the necessary mathematical background, plus resources summarizing commonly used symbols, useful equations of state, microscopic balances for open systems, and links to useful online tools and datasets.

Mechanical - One of the best experts on this subject based on the ideXlab platform.

Juan J De Pablo - One of the best experts on this subject based on the ideXlab platform.

  • Molecular Engineering Thermodynamics
    2014
    Co-Authors: Juan J De Pablo, Jay D. Schieber
    Abstract:

    1. Introduction 2. The postulates of Thermodynamics 3. Generalized thermodynamic potentials 4. First applications of Thermodynamics 5. Application to process design: flow systems 6. Statistical mechanics 7. Molecular interactions 8. Fugacity and vapor-liquid equilibrium 9. Activity, vapor-liquid, and liquid-liquid equilibrium 10. Reaction equilibrium 11. Thermodynamics of polymers 12. Thermodynamics of surfaces Appendix A. Mathematical background Appendix B. Fluid equations of state Appendix C. Microscopic balances for open systems Bibliography Index.

  • molecular Engineering Thermodynamics
    2014
    Co-Authors: Juan J De Pablo, Jay D. Schieber
    Abstract:

    Building up gradually from first principles, this unique introduction to modern Thermodynamics integrates classical, statistical and molecular approaches and is especially designed to support students studying chemical and biochemical Engineering. In addition to covering traditional problems in Engineering Thermodynamics in the context of biology and materials chemistry, students are also introduced to the Thermodynamics of DNA, proteins, polymers and surfaces. It includes over 80 detailed worked examples, covering a broad range of scenarios such as fuel cell efficiency, DNA/protein binding, semiconductor manufacturing and polymer foaming, emphasizing the practical real-world applications of thermodynamic principles; more than 300 carefully tailored homework problems, designed to stretch and extend students' understanding of key topics, accompanied by an online solution manual for instructors; and all the necessary mathematical background, plus resources summarizing commonly used symbols, useful equations of state, microscopic balances for open systems, and links to useful online tools and datasets.