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Stirling Convertor Regenerators addresses the latest developments and future possibilities in the science and practical application of Stirling engine regenerators and technology. Written by experts in the vanguard of alternative energy, this invaluable resource presents integral scientific details and design concepts associated with Stirling conve
Book Synopsis Stirling Convertor Regenerators by : Mounir B. Ibrahim
Download or read book Stirling Convertor Regenerators written by Mounir B. Ibrahim and published by CRC Press. This book was released on 2016-04-19 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stirling Convertor Regenerators addresses the latest developments and future possibilities in the science and practical application of Stirling engine regenerators and technology. Written by experts in the vanguard of alternative energy, this invaluable resource presents integral scientific details and design concepts associated with Stirling conve
The Regenerator and the Stirling Engine examines the basic scientific and engineering principles of the Regenerator and the Stirling engine. Drawing upon his own research and collaboration with engine developers, Allan J Organ offers solutions to many of the problems which have prevented these engines operating at the levels of efficiency of which they are theoretically capable. The Regenerator and the Stirling Engine offers practising engineers and designers specific guidelines for building in optimum thermodynamic performance at the design stage. COMPLETE CONTENTS: Bridging the gap The Stirling cycle Heat transfer – and the price Similarity and scaling; Energetic similarity In support of similarity Hausen revised Connectivity and thermal shorting Real particle trajectories – natural co-ordinates The Stirling regenerator The Ritz rotary regenerator Compressibility effects Regenerator flow impedance Complex admittance – experimental corroboration Steady-flow Cf–Nre correlations inferred from linear-wave analysis Optimization Part I: without the computer Optimization Part II: cyclic steady state Elements of combustion Design study Hobbyhorse Origins Appendices
Book Synopsis The Regenerator and the Stirling Engine by : Allan J. Organ
Download or read book The Regenerator and the Stirling Engine written by Allan J. Organ and published by Wiley-Blackwell. This book was released on 1997-03-06 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Regenerator and the Stirling Engine examines the basic scientific and engineering principles of the Regenerator and the Stirling engine. Drawing upon his own research and collaboration with engine developers, Allan J Organ offers solutions to many of the problems which have prevented these engines operating at the levels of efficiency of which they are theoretically capable. The Regenerator and the Stirling Engine offers practising engineers and designers specific guidelines for building in optimum thermodynamic performance at the design stage. COMPLETE CONTENTS: Bridging the gap The Stirling cycle Heat transfer – and the price Similarity and scaling; Energetic similarity In support of similarity Hausen revised Connectivity and thermal shorting Real particle trajectories – natural co-ordinates The Stirling regenerator The Ritz rotary regenerator Compressibility effects Regenerator flow impedance Complex admittance – experimental corroboration Steady-flow Cf–Nre correlations inferred from linear-wave analysis Optimization Part I: without the computer Optimization Part II: cyclic steady state Elements of combustion Design study Hobbyhorse Origins Appendices
A discrete heat transfer model is developed to determine which parameters influence the effectiveness of Stirling engine regenerators and quantify how they influence it. It is revealed that the regenerator thermal mass ratio and number of sub-regenerators are the two parameters that influence regenerator effectiveness, and these findings were extended to derive expressions for the regenerator effectiveness and Stirling engine efficiency. It is determined that a minimum of 19 sub-regenerators are required to attain a regenerator effectiveness of 95%. Experiments validated the heat transfer model, and demonstrated that stacking sub-regenerators, such as wire meshes, provides sufficient thermal resistance to generate a temperature distribution throughout the regenerator. This is the first study to determine how Stirling engine designers can attain a desired value for the regenerator effectiveness, and/or a desired value for the Stirling engine efficiency by selecting appropriate values of regenerator thermal mass ratio and number of sub-regenerators.
Book Synopsis Enhancing the Effectiveness of Stirling Engine Regenerators by : Anders S. Nielsen
Download or read book Enhancing the Effectiveness of Stirling Engine Regenerators written by Anders S. Nielsen and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A discrete heat transfer model is developed to determine which parameters influence the effectiveness of Stirling engine regenerators and quantify how they influence it. It is revealed that the regenerator thermal mass ratio and number of sub-regenerators are the two parameters that influence regenerator effectiveness, and these findings were extended to derive expressions for the regenerator effectiveness and Stirling engine efficiency. It is determined that a minimum of 19 sub-regenerators are required to attain a regenerator effectiveness of 95%. Experiments validated the heat transfer model, and demonstrated that stacking sub-regenerators, such as wire meshes, provides sufficient thermal resistance to generate a temperature distribution throughout the regenerator. This is the first study to determine how Stirling engine designers can attain a desired value for the regenerator effectiveness, and/or a desired value for the Stirling engine efficiency by selecting appropriate values of regenerator thermal mass ratio and number of sub-regenerators.
Energy conversion technology has always been a main focus for researchers in order to meet the increasing demand as well as securing a clean, consistent and reliable energy supply. The constantly rising fuel price is another good reason to develop alternative systems such as wind turbines, hydropower, photovoltaic systems and other renewable energy solutions. This book contains a collection of selected research works in the areas of electric energy generation, renewable energy sources, hybrid system, electromechanical energy conversion, electric machines, power electronic converters and inverters, energy storage, smart grid and traditional energy conversion systems. The book intends to provide academic and industry professionals working in the field of energy conversion and related applications with an update in energy conversion technology, particularly from the applied perspective.
Book Synopsis Energy Conversion by : Ibrahim H. Al-Bahadly
Download or read book Energy Conversion written by Ibrahim H. Al-Bahadly and published by BoD – Books on Demand. This book was released on 2019-01-16 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy conversion technology has always been a main focus for researchers in order to meet the increasing demand as well as securing a clean, consistent and reliable energy supply. The constantly rising fuel price is another good reason to develop alternative systems such as wind turbines, hydropower, photovoltaic systems and other renewable energy solutions. This book contains a collection of selected research works in the areas of electric energy generation, renewable energy sources, hybrid system, electromechanical energy conversion, electric machines, power electronic converters and inverters, energy storage, smart grid and traditional energy conversion systems. The book intends to provide academic and industry professionals working in the field of energy conversion and related applications with an update in energy conversion technology, particularly from the applied perspective.
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
Book Synopsis Comprehensive Energy Systems by : Ibrahim Dincer
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 Research & Technology 2003 written by and published by DIANE Publishing. This book was released on with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
With the increased world population, fossil fuel consumption and Co2 emissions, solutions are being sought to provide for the increase in energy demands and to reduce emission levels. One promising approach is the use of renewable energy and waste heat sources to drive thermo-mechanical conversion systems, such as Stirling engines. Recently, interest in developing efficient and cost effective Stirling engine technology has increased, particularly in many academic and industrial organizations. In this context, this thesis has first focused on the development of thermodynamic and numerical simulations for the V-type alpha Stirling engine. Secondly, the development of efficient regenerator that can improve the engine performance, it is a new non-annulus segmented micro-channels regenerator of parallel geometry. Using non-ideal adiabatic analysis approach, a successful thermodynamic model was developed for a V-type alpha Stirling engine, and it was validated using published experimental data available for the engine prototype. Also, the development of a detailed 3D CFD model for V-type alpha Stirling engine was carried out and its results were validated using the developed thermodynamic model. The results have shown good agreement in the estimation of the engine indicated power. The combination of the thermodynamic analysis with the 3D CFD modelling to predict the engine performance was an advantage of this work. The effects of different design parameters and operating conditions have been investigated on the performance of a V-alpha type Stirling engine by using the developed CFD model. Those parameters including the dead volume, cold/hot ends temperatures, charge pressure, porosity and matrix wire diameter of regenerator. The PV diagram for the engine was used to predict the power output contributed by each parameter. The maximum power output in this parametric study was achieved 162 W by using a wire matrix diameter of 0.02 mm, porosity of 80%, cold side temperature of 20 0C, and hot side temperature of 600 0C. Also, results predicted that, further increase of the heater and the cooler heights (up to 140 mm) pushed the power output to reach 170 W. A detailed 3D CFD model for segmented micro-channel regenerator was developed and its results were validated against experimental measurements showing maximum deviation of 10.6% and 6.03% for both unidirectional and oscillatory flows respectively in terms of measuring the outlet temperature. The validated CFD model was used to carry out an investigation on the effect of increasing the number of segmentations on the regenerator effectiveness and engine performance. The effects of changing the micro-channel diameter on the regenerator performance in terms of heat transfer and pressure loss was also investigated. The micro- channels regenerator with diameter of 0.5 mm and 32 segments performed better than all other configurations investigated in this study including the Random Fibre matrix. In order to reduce the time and cost for Stirling engine development, this work investigated the route to upgrade commercially available V-type compressor to develop V-type alpha Stirling engine through detailed 3D CFD modelling. The correlations of Nusselt number and friction factor for the developed segmented regenerator were used as porous media parameters in the CFD model for the developed Stirling engine. Also, a new concept for the engine cooler design was modelled and integrated in the overall engine model, showing improved performance for the engine due to lowering of the coolant temperature. The maximum indicated power observed from the developed engine using the 32-segmented regenerator with 0.5 mm micro-channel diameter was 132.89 W. This is higher by 18.33% and 44.4% than those of the two commercial matrix regenerators, namely the Random fibre and the Screen woven respectively.
Book Synopsis Development of New Micro-channels Segmented Regenerator for V-type Alpha Stirling Engine by : Ahmad Khalid Boubaker Almajri
Download or read book Development of New Micro-channels Segmented Regenerator for V-type Alpha Stirling Engine written by Ahmad Khalid Boubaker Almajri and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the increased world population, fossil fuel consumption and Co2 emissions, solutions are being sought to provide for the increase in energy demands and to reduce emission levels. One promising approach is the use of renewable energy and waste heat sources to drive thermo-mechanical conversion systems, such as Stirling engines. Recently, interest in developing efficient and cost effective Stirling engine technology has increased, particularly in many academic and industrial organizations. In this context, this thesis has first focused on the development of thermodynamic and numerical simulations for the V-type alpha Stirling engine. Secondly, the development of efficient regenerator that can improve the engine performance, it is a new non-annulus segmented micro-channels regenerator of parallel geometry. Using non-ideal adiabatic analysis approach, a successful thermodynamic model was developed for a V-type alpha Stirling engine, and it was validated using published experimental data available for the engine prototype. Also, the development of a detailed 3D CFD model for V-type alpha Stirling engine was carried out and its results were validated using the developed thermodynamic model. The results have shown good agreement in the estimation of the engine indicated power. The combination of the thermodynamic analysis with the 3D CFD modelling to predict the engine performance was an advantage of this work. The effects of different design parameters and operating conditions have been investigated on the performance of a V-alpha type Stirling engine by using the developed CFD model. Those parameters including the dead volume, cold/hot ends temperatures, charge pressure, porosity and matrix wire diameter of regenerator. The PV diagram for the engine was used to predict the power output contributed by each parameter. The maximum power output in this parametric study was achieved 162 W by using a wire matrix diameter of 0.02 mm, porosity of 80%, cold side temperature of 20 0C, and hot side temperature of 600 0C. Also, results predicted that, further increase of the heater and the cooler heights (up to 140 mm) pushed the power output to reach 170 W. A detailed 3D CFD model for segmented micro-channel regenerator was developed and its results were validated against experimental measurements showing maximum deviation of 10.6% and 6.03% for both unidirectional and oscillatory flows respectively in terms of measuring the outlet temperature. The validated CFD model was used to carry out an investigation on the effect of increasing the number of segmentations on the regenerator effectiveness and engine performance. The effects of changing the micro-channel diameter on the regenerator performance in terms of heat transfer and pressure loss was also investigated. The micro- channels regenerator with diameter of 0.5 mm and 32 segments performed better than all other configurations investigated in this study including the Random Fibre matrix. In order to reduce the time and cost for Stirling engine development, this work investigated the route to upgrade commercially available V-type compressor to develop V-type alpha Stirling engine through detailed 3D CFD modelling. The correlations of Nusselt number and friction factor for the developed segmented regenerator were used as porous media parameters in the CFD model for the developed Stirling engine. Also, a new concept for the engine cooler design was modelled and integrated in the overall engine model, showing improved performance for the engine due to lowering of the coolant temperature. The maximum indicated power observed from the developed engine using the 32-segmented regenerator with 0.5 mm micro-channel diameter was 132.89 W. This is higher by 18.33% and 44.4% than those of the two commercial matrix regenerators, namely the Random fibre and the Screen woven respectively.
For Stirling engines to enjoy widespread application and acceptance, not only must the fundamental operation of such engines be widely understood, but the requisite analytic tools for the stimulation, design, evaluation and optimization of Stirling engine hardware must be readily available. The purpose of this design manual is to provide an introduction to Stirling cycle heat engines, to organize and identify the available Stirling engine literature, and to identify, organize, evaluate and, in so far as possible, compare non-proprietary Stirling engine design methodologies. This report was originally prepared for the National Aeronautics and Space Administration and the U. S. Department of Energy.
Book Synopsis Stirling Engine Design Manual by : William Martini
Download or read book Stirling Engine Design Manual written by William Martini and published by CreateSpace. This book was released on 2013-01-25 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: For Stirling engines to enjoy widespread application and acceptance, not only must the fundamental operation of such engines be widely understood, but the requisite analytic tools for the stimulation, design, evaluation and optimization of Stirling engine hardware must be readily available. The purpose of this design manual is to provide an introduction to Stirling cycle heat engines, to organize and identify the available Stirling engine literature, and to identify, organize, evaluate and, in so far as possible, compare non-proprietary Stirling engine design methodologies. This report was originally prepared for the National Aeronautics and Space Administration and the U. S. Department of Energy.
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:
A radically new understanding of and practical approach to climate change by noted environmentalist Paul Hawken, creator of the New York Times bestseller Drawdown Regeneration offers a visionary new approach to climate change, one that weaves justice, climate, biodiversity, equity, and human dignity into a seamless tapestry of action, policy, and transformation that can end the climate crisis in one generation. It is the first book to describe and define the burgeoning regeneration movement spreading rapidly throughout the world. Regeneration describes how an inclusive movement can engage the majority of humanity to save the world from the threat of global warming, with climate solutions that directly serve our children, the poor, and the excluded. This means we must address current human needs, not future existential threats, real as they are, with initiatives that include but go well beyond solar, electric vehicles, and tree planting to include such solutions as the fifteen-minute city, bioregions, azolla fern, food localization, fire ecology, decommodification, forests as farms, and the number one solution for the world: electrifying everything. Paul Hawken and the nonprofit Regeneration Organization are launching a series of initiatives to accompany the book, including a streaming video series, curriculum, podcasts, teaching videos, and climate action software. Regeneration is the inspiring and necessary guide to inform the rapidly spreading climate movement.
Book Synopsis Regeneration by : Paul Hawken
Download or read book Regeneration written by Paul Hawken and published by Penguin. This book was released on 2021-09-21 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: A radically new understanding of and practical approach to climate change by noted environmentalist Paul Hawken, creator of the New York Times bestseller Drawdown Regeneration offers a visionary new approach to climate change, one that weaves justice, climate, biodiversity, equity, and human dignity into a seamless tapestry of action, policy, and transformation that can end the climate crisis in one generation. It is the first book to describe and define the burgeoning regeneration movement spreading rapidly throughout the world. Regeneration describes how an inclusive movement can engage the majority of humanity to save the world from the threat of global warming, with climate solutions that directly serve our children, the poor, and the excluded. This means we must address current human needs, not future existential threats, real as they are, with initiatives that include but go well beyond solar, electric vehicles, and tree planting to include such solutions as the fifteen-minute city, bioregions, azolla fern, food localization, fire ecology, decommodification, forests as farms, and the number one solution for the world: electrifying everything. Paul Hawken and the nonprofit Regeneration Organization are launching a series of initiatives to accompany the book, including a streaming video series, curriculum, podcasts, teaching videos, and climate action software. Regeneration is the inspiring and necessary guide to inform the rapidly spreading climate movement.
