Download or read book A Contribution to Numerically Efficient Modelling of Thermodynamic Systems written by Christian Wilhelm Schulze and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in the Modelling of Thermodynamic Systems written by Essefi, Elhoucine and published by IGI Global. This book was released on 2022-03-25 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermodynamics is a common field of study involving many different specialties including physics, chemistry, geology, and cosmology. Thermodynamics is incredibly useful for manmade industrial processes related to material studies, renewable energy, and more. It is essential for professionals to stay current with the developments in thermodynamic systems, as thermodynamics proves vital for understanding natural macroprocesses related to geology, areology, and cosmology. Advances in the Modelling of Thermodynamic Systems discusses the recent advances in modeling of thermodynamic systems as well as the state-of-the-art manmade industrial processes and natural processes taking place on Earth and beyond. It reveals an interdisciplinary vision of thermodynamics from the minuscule to the immense. Covering topics such as entropy generation, linear modeling, and statistical analysis, this premier reference source is an essential resource for engineers, chemists, physicists, mechanics, geologists, cosmologists, students and educators of higher education, libraries, researchers, and academicians.

Download or read book Geoenergy Modeling II written by Haibing Shao and published by Springer. This book was released on 2016-10-13 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to the numerical modeling of shallow geothermal systems. The utilization of shallow geothermal energy involves the integration of multiple Borehole Heat Exchangers (BHE) with Ground Source Heat Pump (GSHP) systems to provide heating and cooling. The modeling practices explained in this book can improve the efficiency of these increasingly common systems. The book begins by explaining the basic theory of heat transport processes in man-made as well as natural media. . These techniques are then applied to the simulation of borehole heat exchangers and their interaction with the surrounding soil. The numerical and analytical models are verified against analytical solutions and measured data from a Thermal Response Test, and finally, a real test site is analyzed through the model and discussed with regard to BHE and GSHP system design and optimization.

Download or read book Numerical Simulation for Next Generation Thermal Power Plants written by Falah Alobaid and published by Springer. This book was released on 2018-03-29 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides highly specialized researchers and practitioners with a major contribution to mathematical models’ developments for energy systems. First, dynamic process simulation models based on mixture flow and two-fluid models are developed for combined-cycle power plants, pulverised coal-fired power plants, concentrated solar power plant and municipal waste incineration. Operation data, obtained from different power stations, are used to investigate the capability of dynamic models to predict the behaviour of real processes and to analyse the influence of modeling assumptions on simulation results. Then, a computational fluid dynamics (CFD) simulation programme, so-called DEMEST, is developed. Here, the fluid-solid, particle-particle and particle-wall interactions are modeled by tracking all individual particles. To this purpose, the deterministic Euler-Lagrange/Discrete Element Method (DEM) is applied and further improved. An emphasis is given to the determination of inter-phase values, such as volumetric void fraction, momentum and heat transfers, using a new procedure known as the offset-method and to the particle-grid method allowing the refinement of the grid resolution independently from particle size. Model validation is described in detail. Moreover, thermochemical reaction models for solid fuel combustion are developed based on quasi-single-phase, two-fluid and Euler-Lagrange/MP-PIC models. Measurements obtained from actual power plants are used for validation and comparison of the developed numerical models.

Download or read book Thermodynamic Approaches in Engineering Systems written by Stanislaw Sieniutycz and published by Elsevier. This book was released on 2016-05-20 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermodynamic Approaches in Engineering Systems responds to the need for a synthesizing volume that throws light upon the extensive field of thermodynamics from a chemical engineering perspective that applies basic ideas and key results from the field to chemical engineering problems. This book outlines and interprets the most valuable achievements in applied non-equilibrium thermodynamics obtained within the recent fifty years. It synthesizes nontrivial achievements of thermodynamics in important branches of chemical and biochemical engineering. Readers will gain an update on what has been achieved, what new research problems could be stated, and what kind of further studies should be developed within specialized research. Presents clearly structured chapters beginning with an introduction, elaboration of the process, and results summarized in a conclusion Written by a first-class expert in the field of advanced methods in thermodynamics Provides a synthesis of recent thermodynamic developments in practical systems Presents very elaborate literature discussions from the past fifty years

Download or read book Phase Diagrams and Thermodynamic Modeling of Solutions written by Arthur D. Pelton and published by Academic Press. This book was released on 2018-09-19 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phase Diagrams and Thermodynamic Modeling of Solutions provides readers with an understanding of thermodynamics and phase equilibria that is required to make full and efficient use of these tools. The book systematically discusses phase diagrams of all types, the thermodynamics behind them, their calculations from thermodynamic databases, and the structural models of solutions used in the development of these databases. Featuring examples from a wide range of systems including metals, salts, ceramics, refractories, and concentrated aqueous solutions, Phase Diagrams and Thermodynamic Modeling of Solutions is a vital resource for researchers and developers in materials science, metallurgy, combustion and energy, corrosion engineering, environmental engineering, geology, glass technology, nuclear engineering, and other fields of inorganic chemical and materials science and engineering. Additionally, experts involved in developing thermodynamic databases will find a comprehensive reference text of current solution models. Presents a rigorous and complete development of thermodynamics for readers who already have a basic understanding of chemical thermodynamics Provides an in-depth understanding of phase equilibria Includes information that can be used as a text for graduate courses on thermodynamics and phase diagrams, or on solution modeling Covers several types of phase diagrams (paraequilibrium, solidus projections, first-melting projections, Scheil diagrams, enthalpy diagrams), and more

Download or read book Optimal Design and Efficiency Improvement of Fluid Machinery and Systems written by Ramesh K. Agarwal and published by Frontiers Media SA. This book was released on 2023-07-19 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Phebus Fission Product Project written by W. Krischer and published by CRC Press. This book was released on 2003-09-02 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Seminar of the Phebus-FP [Fission Product] Project, held at the Chateau Cadarache, St Paul-Lez-Durance, France, 5-7 June 1991.

Download or read book Modelica Modeling and Ecosystem Biomimicry of District Energy Systems written by Kathryn Hinkelman and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: By integrating multiple energy systems at a community level, it is possible to use local renewable energy supplies and share energy resources between various producers, consumers, and storages. For heating and cooling needs, this integration occurs through district energy systems (DES), which can capture waste heat, allow multiple buildings to share thermal energy resources, and provide renewable energy conversion and resource sharing opportunities. However, before industry practitioners can leverage DES benefits for communities and cities, we need to address critical gaps in both the foundational energy modeling tools and the whole-system design approach. As such, the objective of this work is to enable district heating and cooling as linkages with waste-heat recovery potential for integrated energy systems. To meet this objective, this dissertation presents several projects on the comprehensive design of DES and their controls, which are made possible through advancements in Modelica modeling and novel engineering applications of ecosystem biomimicry. To address fundamental gaps in modeling software and methods for complete DES simulation, this dissertation first focused on existing district cooling (DC) and steam-based district heating (DH) systems. For DC systems, we developed a methodology for DC model-based retrofits, released new open-source DC models in the Modelica Buildings Library, and leveraged these models for a real-world case study at the University of Colorado Boulder. Multi-dimensional analysis of the validated model led to several energy saving strategies, including control setpoint optimization, equipment modification, and pump setpoint adjustments. Results indicated that a combination of the studied measures can save the campus annually 84.6 MWh of energy, 8.9% of electricity costs, 58.0 metric tons of carbon dioxide emissions, while the waterside economizer cuts down chillers' run times by 201 days/year, reducing maintenance costs and extending chiller life. For steam-based DH systems, this work improved the performance of water/steam thermodynamic calculations for heating applications, released numerous DH models in the Modelica Buildings Library, and evaluated the accuracy and numerical performance of our new modeling approach from fluid mediums to complete districts. We improved the numerical performance of water/steam thermodynamic calculations by coupling a numerically efficient liquid water model (that represents enthalpy as a function of temperature only) with an industrial water/steam model (i.e., IAPWS IF97). Through this "split-medium" approach, we broke costly algebraic loops in the problem formulation by decoupling mass and energy balance equations. Compared to district models with the commonly adopted IF97 water/steam model for all phase regions, the new implementation improves the scaling rate for large districts from cubic to quadratic with negligible compromise to accuracy. For an annual simulation with 180 buildings, this translates to a computing time reduction from 33 to 1-1.5 hours. These results are critically important for industry practitioners to simulate steam DH systems at large scales. To address the need for whole-system design approaches for integrated energy systems, we proposed an innovative ecosystem biomimicry approach. This approach functionally analyzes biological systems, abstracts those functions into models, and translates the models to create new technologies. Because ecosystem biomimicry is an emerging yet promising field, this dissertation includes an interdisciplinary literature review to synthesize trends across case studies, evaluate design methodologies, and identify future opportunities when applying ecosystem biomimicry to engineering practices, including cyber, physical, and cyber-physical systems. Through bibliographic analysis, statistical analysis, and deep dives into engineering applications and design methodologies, we synthesized trends in ecosystem biomimicry and identified opportunity spaces. For future studies, this review provides a comprehensive reference for ecosystem biomimetic design practices and application opportunities across multiple engineering domains. Following the critical review on ecosystem biomimicry, we then pursued case studies for district-level integrated energy systems. Ecological network analysis (ENA) was identified from the review as a promising whole-system analysis methods for cyber-physical systems that had not yet been applied for complex dynamic engineering systems. To fill this gap, this work first translated ENA from biological sciences for engineering applications. Then, we demonstrated the novel ENA method to design the heating and cooling systems for an office building and data center, coupling the buildings together via ambient-loop district energy. For the models to suit integrated building energy systems, which have multiple energy types and non-negligible dynamics, we were the first to formulate ENA (1) on an exergy basis and (2) dynamically for non-biological applications. For a case study that iteratively redesigned building heating and cooling systems, the proposed approach reduced source energy by 15% and HVAC site energy by 84% with negligible sacrifice to thermal comfort. Counter-intuitively, the redesign also reduced the exergy efficiency of the total system from 60% to 34%. This indicates that ENA and other network metrics that classify system organization can outperform traditional efficiency-based metrics for integrated energy systems.

Download or read book Computational Multiscale Modeling of Fluids and Solids written by Martin Oliver Steinhauser and published by Springer. This book was released on 2016-11-29 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: The idea of the book is to provide a comprehensive overview of computational physics methods and techniques, that are used for materials modeling on different length and time scales. Each chapter first provides an overview of the basic physical principles which are the basis for the numerical and mathematical modeling on the respective length-scale. The book includes the micro-scale, the meso-scale and the macro-scale, and the chapters follow this classification. The book explains in detail many tricks of the trade of some of the most important methods and techniques that are used to simulate materials on the perspective levels of spatial and temporal resolution. Case studies are included to further illustrate some methods or theoretical considerations. Example applications for all techniques are provided, some of which are from the author’s own contributions to some of the research areas. The second edition has been expanded by new sections in computational models on meso/macroscopic scales for ocean and atmosphere dynamics. Numerous applications in environmental physics and geophysics had been added.

Download or read book Computational Thermodynamics of Materials written by Zi-Kui Liu and published by Cambridge University Press. This book was released on 2016-06-30 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrates fundamental concepts with experimental data and practical applications, including worked examples and end-of-chapter problems.

Download or read book Energy Efficiency Analysis and Intelligent Optimization of Process Industry written by Zhiqiang Geng and published by Frontiers Media SA. This book was released on 2023-10-09 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Numerical Ocean Circulation Modeling written by Aike Beckmann and published by World Scientific. This book was released on 1999-04-29 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive overview of the models and methods employed in the rapidly advancing field of numerical ocean circulation modeling. For those new to the field, concise reviews of the equations of oceanic motion, sub-grid-scale parameterization, and numerical approximation techniques are presented and four specific numerical models, chosen to span the range of current practice, are described in detail. For more advanced users, a suite of model test problems is developed to illustrate the differences among models, and to serve as a first stage in the quantitative evaluation of future algorithms. The extensive list of references makes this book a valuable text for both graduate students and postdoctoral researchers in the marine sciences and in related fields such as meteorology, and climate and coupled biogeochemical modeling.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Field Theoretic Simulations in Soft Matter and Quantum Fluids written by Glenn H. Fredrickson and published by Oxford University Press. This book was released on 2023-02-28 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph provides an introduction to field-theoretic simulations in classical soft matter and Bose quantum fluids. The method represents a new class of molecular computer simulation in which continuous fields, rather than particle coordinates, are sampled and evolved. Field-theoretic simulations are capable of analysing the properties of systems that are challenging for traditional simulation techniques, including dense phases of high molecular weight polymers, self-assembling fluids, and quantum fluids at finite temperature. The monograph details analytical methods for converting classical and quantum many-body problems to equilibrium field theory models with a molecular basis. Numerical methods are described that enable efficient, accurate, and scalable simulations of such models on modern computer hardware, including graphics processing units (GPUs). Extensions to non-equilibrium systems are discussed, along with an introduction to advanced field-theoretic simulation techniques including free energy estimation, alternative ensembles, coarse-graining, and variable cell methods.

Download or read book Comprehensive Energy Systems written by Ibrahim Dincer and published by Elsevier. This book was released on 2018-02-07 with total page 5543 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Energy Systems, Seven Volume Set provides a unified source of information covering the entire spectrum of energy, one of the most significant issues humanity has to face. This comprehensive book describes traditional and novel energy systems, from single generation to multi-generation, also covering theory and applications. In addition, it also presents high-level coverage on energy policies, strategies, environmental impacts and sustainable development. No other published work covers such breadth of topics in similar depth. High-level sections include Energy Fundamentals, Energy Materials, Energy Production, Energy Conversion, and Energy Management. Offers the most comprehensive resource available on the topic of energy systems Presents an authoritative resource authored and edited by leading experts in the field Consolidates information currently scattered in publications from different research fields (engineering as well as physics, chemistry, environmental sciences and economics), thus ensuring a common standard and language

Download or read book Solar Chimney Power Plant Generating Technology written by Tingzhen Ming and published by Academic Press. This book was released on 2016-03-15 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solar Chimney Power Plant Generating Technology presents the latest advanced solar chimney power generating technologies to help engineers acquire a comprehensive understanding of the fundamental theories, technologies, and applications of solar chimney power generating systems. The book includes comprehensive theories, very detailed technologies, and many well-illustrated, basic configurations of different types of systems, enabling readers to understand the fundamental theory, the design methods of solar chimney systems, and the basic parameters of the construction and operation of these systems. Includes comprehensive theories, very detailed technologies, and many basic configurations of different types of systems Covers the basic mechanisms of fluid flow, heat transfer, power output, energy storage, and operational procedures of SCPPS (solar chimney power plant system) turbines Focuses on thermodynamic theory, helio-aero-gravity effect, fluid flow and heat transfer characteristics, design for SC turbine, energy storage, and the effect of ambient crosswinds