Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Effect Of Heat Exchanger Volume And Geometry On Power Output Of A Low Temperature Difference Stirling Engine
Download Effect Of Heat Exchanger Volume And Geometry On Power Output Of A Low Temperature Difference Stirling Engine full books in PDF, epub, and Kindle. Read online Effect Of Heat Exchanger Volume And Geometry On Power Output Of A Low Temperature Difference Stirling Engine ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Effect of Heat Exchanger Volume and Geometry on Power Output of a Low Temperature Difference Stirling Engine by : Linda Hasanovich
Download or read book Effect of Heat Exchanger Volume and Geometry on Power Output of a Low Temperature Difference Stirling Engine written by Linda Hasanovich and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents the results of an investigation into heat exchanger design for low temperature difference Stirling engines (LTDSEs). The aim of this study was to determine if there is an optimum heat exchanger geometry for producing maximum power output for a LTDSE. There are multiple factors that affect the optimum heat exchanger geometry: the gas temperature achieved by the heat exchangers, the pressure drop through the heat exchangers, and the effect of dead volume on the pressure achieved by the Stirling cycle. This study was undertaken using several models based on an experimental LTDSE. A fundamental analysis using analytical and empirical relations for steady state heat transfer through a heat exchanger with isothermal walls showed that the output temperature of the gas is dependent on heat exchanger surface area regardless of aspect ratio. Additionally, long heat exchangers and heat exchangers with small cross-sectional area led to large pressure drops through the heat exchanger. To evaluate the effect of dead volume on output power, the Schmidt model was used. The results confirmed that the engine power output decreased with increasing dead volume ratio. The Schmidt model was used to determine a maximum optimal dead volume ratio, below which the peak power output with an optimal heat exchanger volume must be located. To determine the optimum heat exchanger volume and geometry the 3rd order commercial Stirling engine model, Sage, was used. Sage is able to model the heat transfer in the heat exchangers and the effect on the engine gas during the cycle. A model was created in Sage based on the experimental LTDSE. This model needed to connect the liquid source and sink of the heat exchangers to the gas within the engine. This was done using a temperature drop determined by a convective heat transfer resistance of the liquid. To determine this resistance, a multi-fluid steady state CFD study was done in the absence of experimental data in order to capture the interaction between the air and liquid in the heat exchanger. From this study, an average convective heat transfer resistance was able to be determined. With the convective heat transfer resistance obtained the Sage model was validated against the experimental LTDSE results. Sage was found to generally agree with the experimental results, but showed overprediction and an increased dependence on speed that was not present in the experimental results. Some model tuning was done to improve the model results. The overprediction was able to be reduced by tuning the convective heat transfer to match the model gas temperatures to the experiment. The dependence of the model output power on engine speed was reduced by reducing the flow friction multiplier, which changed the phase of the pressure curve. However, this led to increased overprediction, so it was not included in the final version of the Sage model. Using the model with tuned convective heat transfer resistance, the heat exchanger geometry was varied by changing the heat exchanger length and cross-sectional area. An optimum heat exchanger geometry was determined. This optimum geometry was at the shortest heat exchanger length with a large cross-sectional area. To maximize the power output, the surface area of the heat exchanger needs to be maximized while keeping pressure drop through the heat exchanger low and not contributing excess dead volume to the engine. Some sensitivities were considered to better understand this result. When the engine pressure and speed were varied, it was found that the optimum heat exchanger geometry was larger for high speed and high pressure cases, as the heat transfer requirement increased. Additional dead volume that scaled with the heat exchanger volume was added to represent a plenum volume that connects the heat exchangers to the main engine volume. The optimum heat exchanger geometry in this case had a longer heat exchanger with smaller cross-sectional area. This results from the excess dead volume associated with a large cross-sectional area having a more significant penalty than the benefit of low pressure drop through the heat exchanger. Finally, the compression ratio of the engine was held constant, and it was found that a larger heat exchanger was required, and the effect of excess dead volume on engine output power was reduced.
Book Synopsis Stirling And Thermal-lag Engines: Motive Power Without The Co2 by : Allan J Organ
Download or read book Stirling And Thermal-lag Engines: Motive Power Without The Co2 written by Allan J Organ and published by World Scientific. This book was released on 2022-12-29 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Existing literature focuses on the alleged merits of the Stirling engine. These are indeed latent but, decades on, remain to be fully realised. This is despite the fact that Stirling and other closed-cycle prime-movers offer a contribution to an ultra-low carbon economy. By contrast with solar panels, the initial manufacture of Stirling engines makes no demands on scarce or exotic raw materials. Further, calculating embodied carbon per kWh favours the Stirling engine by a wide margin.However, the reader expecting to find the Stirling engine promoted as a panacea for energy problems may be surprised to find the reverse. Stirling and Thermal-Lag Engines reflects upon the fact that there is more to be gained by approaching its subject as a problem than as a solution. The Achilles heel of the Stirling engine is a low numerical value of specific work, defined as work per cycle per swept volume per unit of charge pressure and conventionally denoted Beale number NB. Measured values remain unimproved since 1818, quantified here for the first time at 2% of the NB of the modern internal combustion engine! The low figure is traced to incomplete utilisation of the working gas. Only a small percentage of the charge gas — if any — is processed through a complete cycle, i.e., between temperature extremes.The book offers ready-made tools including a simplified algorithm for particle trajectory map construction; an author-patented mechanism delivering optimised working-gas distribution; flow and heat transfer data re-acquired in context and an illustrated re-derivation of the academically respected Method of Characteristics which now copes with shock formation and flow-area discontinuities. All formulations are presented in sufficient detail to allow the reader to 'pick up and run' with them using the data offered in the book.The various strands are drawn together in a comprehensively engineered design of an internally focusing solar Stirling engine, presented in a form allowing a reader with access to basic machining facilities to construct one.The sun does not always shine. But neither will the oil always flow. This new title offers an entrée to technology appropriate to the 21st century.
Book Synopsis A Stirling Engine Computer Model for Performance Calculations by : R.C. Tew
Download or read book A Stirling Engine Computer Model for Performance Calculations written by R.C. Tew and published by Рипол Классик. This book was released on 1978 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Exergy for A Better Environment and Improved Sustainability 1 by : Fethi Aloui
Download or read book Exergy for A Better Environment and Improved Sustainability 1 written by Fethi Aloui and published by Springer. This book was released on 2018-08-04 with total page 1443 pages. Available in PDF, EPUB and Kindle. Book excerpt: This multi-disciplinary book presents the most recent advances in exergy, energy, and environmental issues. Volume 1 focuses on fundamentals in the field and covers current problems, future needs, and prospects in the area of energy and environment from researchers worldwide. Based on selected lectures from the Seventh International Exergy, Energy and Environmental Symposium (IEEES7-2015) and complemented by further invited contributions, this comprehensive set of contributions promote the exchange of new ideas and techniques in energy conversion and conservation in order to exchange best practices in "energetic efficiency". Included are fundamental and historical coverage of the green transportation and sustainable mobility sectors, especially regarding the development of sustainable technologies for thermal comforts and green transportation vehicles. Furthermore, contributions on renewable and sustainable energy sources, strategies for energy production, and the carbon-free society constitute an important part of this book. Exergy for Better Environment and Sustainability, Volume 1 will appeal to researchers, students, and professionals within engineering and the renewable energy fields.
Book Synopsis Power Output and Efficiency of Stirling Engines Using Different Working Gases by : Marcos Blanco Figueras
Download or read book Power Output and Efficiency of Stirling Engines Using Different Working Gases written by Marcos Blanco Figueras and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The theoretical investigation includes the design of a simulation program in EES, Matlab or similar of the Stirling engine. Initially an isothermal model is made(constant temperatures in cylinder volumes. hot and cold heat exchanger and regenerator). After that a new model is made, which differs from the former by having adiabatic cylinder volumes. When the basic model is working properly, heat transfer and flow losses in the heat exchangers are included.For the experimental investigation, an existing 9 kW Stirling engine in the laboratory is used. Data acquisition and measuring equipment on the engine is part of the project. Experiments are made using different workin gases in the engine (Helium, Nitrogen, Hydrogen, Carbon Dioxide, ...) Part of the project is intallation of suitable data acquisition and making the engine control system work properly. Finally results from calculations are compared with results from measurements in the laboratory.
Book Synopsis Thermodynamics and Gas Dynamics of the Stirling Cycle Machine by : Allan J. Organ
Download or read book Thermodynamics and Gas Dynamics of the Stirling Cycle Machine written by Allan J. Organ and published by Cambridge University Press. This book was released on 1992-08-20 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 1992 book provides a coherent and comprehensive treatment of the thermodynamics and gas dynamics of the practical Stirling cycle. Invented in 1816, the Stirling engine is the subject of worldwide research and development on account of unique qualities - silence, indifference to heat source, low level of emissions when burning conventional fuels and an ability to function in reverse as heat pump or refrigerator. The student of engineering will discover an instructure and illuminating case study revealing the interactions of basic disciplines. The researcher will find the groundwork prepared for various types of computer simulation, Those involved in the use and teaching of solution methods for unsteady gas dynamics problems will find a comprehensive treatment on nonlinear and linear wave approaches, for the Stirling machine provides an elegant example of the application of each. The book will be of use to all those involved in researching, designing or manufacturing Stirling prime movers, coolers and related regenerative thermal machines.
Book Synopsis Stirling Cycle Engine Analysis, by : Israel Urieli
Download or read book Stirling Cycle Engine Analysis, written by Israel Urieli and published by CRC Press. This book was released on 1984 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Implicit Filtering by : C. T. Kelley
Download or read book Implicit Filtering written by C. T. Kelley and published by SIAM. This book was released on 2011-09-29 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: A description of the implicit filtering algorithm, its convergence theory and a new MATLAB® implementation.
Book Synopsis A Stirling Engine Computer Model for Performance Calculations by : Roy C. Tew
Download or read book A Stirling Engine Computer Model for Performance Calculations written by Roy C. Tew and published by . This book was released on 1978 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Los Alamos Science written by and published by . This book was released on 1992 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Thermal Management Systems by : Fethi Aloui
Download or read book Handbook of Thermal Management Systems written by Fethi Aloui and published by Elsevier. This book was released on 2023-08-24 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Thermal Management Systems: e-Mobility and Other Energy Applications is a comprehensive reference on the thermal management of key renewable energy sources and other electronic components. With an emphasis on practical applications, the book addresses thermal management systems of batteries, fuel cells, solar panels, electric motors, as well as a range of other electronic devices that are crucial for the development of sustainable transport systems. Chapters provide a basic understanding of the thermodynamics behind the development of a thermal management system, update on Batteries, Fuel Cells, Solar Panels, and Other Electronics, provide a detailed description of components, and discuss fundamentals. Dedicated chapters then systematically examine the heating, cooling, and phase changes of each system, supported by numerical analyses, simulations and experimental data. These chapters include discussion of the latest technologies and methods and practical guidance on their application in real-world system-level projects, as well as case studies from engineering systems that are currently in operation. Finally, next-generation technologies and methods are discussed and considered. Presents a comprehensive overview of thermal management systems for modern electronic technologies related to energy production, storage and sustainable transportation Addresses the main bottlenecks in the technology development for future green and sustainable transportation systems Focuses on the practical aspects and implementation of thermal management systems through industrial case studies, real-world examples, and solutions to key problems
Book Synopsis Principles and Applications Of Stirling Engines by : C. D. West
Download or read book Principles and Applications Of Stirling Engines written by C. D. West and published by Springer. This book was released on 1986-05-31 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Micro Energy Systems by : Mike Knowles
Download or read book Micro Energy Systems written by Mike Knowles and published by John Wiley & Sons. This book was released on 2004-11-05 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: This interesting book aims to contrast the existing and developing generating systems typically in the range 1kW to 2MW for use in hospitals, supermarkets, leisure centres, government and commercial building and domestic housing generally and for direct connection to the grid.COMPLETE CONTENTS Renewable energy in the UK - an issue of scale Wind turbines - a reviewof smaller units Run of river hydro for the UK and overseas Small hydro for remote areas - an international view Micro CHP - energy services and smart metering Micro combined heat and power Stirling engine based microenergy systems Running microturbines on biogas Community biomass gasification CHP Really small micro-scale generation (PV) The 'RICT' engine in micro energy and CHP systems Pressurized hybrid fuel cell system Reinventing electricity distribution Micro Energy Systems will be useful to project developers, power generators, local government and building services engineers in the industrial and commercial sector in the UK and throughout the world.
Book Synopsis An Introduction to Low Temperature Differential Stirling Engines by : James R. Senft
Download or read book An Introduction to Low Temperature Differential Stirling Engines written by James R. Senft and published by . This book was released on 1996 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stirling Engine Design Manual by : William R. Martini
Download or read book Stirling Engine Design Manual written by William R. Martini and published by . This book was released on 1978 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 12th Intersociety Energy Conversion Engineering Conference, Washington, D.C., August 28 Through September 2, 1977 by :
Download or read book Proceedings of the 12th Intersociety Energy Conversion Engineering Conference, Washington, D.C., August 28 Through September 2, 1977 written by and published by . This book was released on 1977 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt:
