Download or read book Exergy based Performance Assessment and Optimization Potential of Refrigeration Plants in Air conditioning Applications written by Lorenz Brenner and published by . This book was released on 2021 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: A significant amount of energy consumption in buildings is due to heating, ventilation and air-conditioning systems. Among other systems, refrigeration plants are subject of efficiency improvements. However, actual operating conditions of such plants and the performance must be known as well as any eventual optimization potential identified before enhancements can take place. Energy and exergy analyses have been widely used to assess the performance of refrigeration systems. Among others, exergy efficiency is used as an indicator to determine the system performance; however, the practical achievable values are unknown. Therefore, this work proposes a practice-oriented evaluation method for refrigeration plants, based on exergy analysis and technical standards as baseline. The identification of possible enhancements is highly relevant in practice, as measures which improve the system effectiveness most likely prevent frequent shortcomings during refrigeration plant operation. With the introduced optimization potential index (OPI), the achievable enhancements compared to the state of the art in technology and the performance are identified at a glance regardless the complexity of the system. By dividing the plant into different subsystems, each of them can be assessed individually. Laypersons can easily determine the system operating state and subsequently, if needed, initiate a detailed analysis as well as appropriate countermeasures by specialist. Moreover, modeling is seen as an appropriate method to determine additional reference values for refrigeration machines if none are available according to technical standards. Among different modeling techniques, artificial neural network models reveal the best performance for the present application. The application, functionality and purpose of the presented method is exemplified on two numerical test cases and on a real field plant as a case study. The investigation reveals an adequate operation of the studied field plant in general, where three out of seven cooling locations have performance issues. The reason should be identified in a subsequent detailed study. Overall, the auxiliary electrical exergy input shows the same magnitude as the thermal exergy input. This emphasizes the importance of minimizing the electrical energy usage, as it is the main overhead in the operating cost of refrigeration plants and also to achieve an increase in system performance. Moreover, measuring concepts of real systems are analyzed and the corresponding retrofitting costs for the application of the presented approach are identified. It is shown that a retrofit of the instrumentation can be worthwhile if the refrigeration plant already comprises a measuring concept close to the state of the art.

Download or read book Refrigeration Systems and Applications written by Ibrahim Dinçer and published by John Wiley & Sons. This book was released on 2017-05-30 with total page 747 pages. Available in PDF, EPUB and Kindle. Book excerpt: The definitive text/reference for students, researchers and practicing engineers This book provides comprehensive coverage on refrigeration systems and applications, ranging from the fundamental principles of thermodynamics to food cooling applications for a wide range of sectoral utilizations. Energy and exergy analyses as well as performance assessments through energy and exergy efficiencies and energetic and exergetic coefficients of performance are explored, and numerous analysis techniques, models, correlations and procedures are introduced with examples and case studies. There are specific sections allocated to environmental impact assessment and sustainable development studies. Also featured are discussions of important recent developments in the field, including those stemming from the author’s pioneering research. Refrigeration is a uniquely positioned multi-disciplinary field encompassing mechanical, chemical, industrial and food engineering, as well as chemistry. Its wide-ranging applications mean that the industry plays a key role in national and international economies. And it continues to be an area of active research, much of it focusing on making the technology as environmentally friendly and sustainable as possible without compromising cost efficiency and effectiveness. This substantially updated and revised edition of the classic text/reference now features two new chapters devoted to renewable-energy-based integrated refrigeration systems and environmental impact/sustainability assessment. All examples and chapter-end problems have been updated as have conversion factors and the thermophysical properties of an array of materials. Provides a solid foundation in the fundamental principles and the practical applications of refrigeration technologies Examines fundamental aspects of thermodynamics, refrigerants, as well as energy and exergy analyses and energy and exergy based performance assessment criteria and approaches Introduces environmental impact assessment methods and sustainability evaluation of refrigeration systems and applications Covers basic and advanced (and hence integrated) refrigeration cycles and systems, as well as a range of novel applications Discusses crucial industrial, technical and operational problems, as well as new performance improvement techniques and tools for better design and analysis Features clear explanations, numerous chapter-end problems and worked-out examples Refrigeration Systems and Applications, Third Edition is an indispensable working resource for researchers and practitioners in the areas of Refrigeration and Air Conditioning. It is also an ideal textbook for graduate and senior undergraduate students in mechanical, chemical, biochemical, industrial and food engineering disciplines.

Download or read book New Frontiers in Sustainable Aviation written by T. Hikmet Karakoc and published by Springer Nature. This book was released on 2022-01-20 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines recent progress and new technological developments in sustainable aviation. It covers alternative fuel types, propulsion technologies, and aerial vehicle (unmanned aerial vehicles, drones, passenger air) emission reduction technologies. The effects of these technologies on vehicle performance, cost, and environmental impact are discussed, and case studies, practical applications, and engineering solutions and methodologies are provided. This collection will be an invaluable reference for researchers, practicing engineers, and students.

Download or read book Integrated Absorption Refrigeration Systems written by Ibrahim Dincer and published by Springer. This book was released on 2016-08-18 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a detailed analysis of absorption refrigeration systems, covering single effect to multi-effect systems and their applications. Both the first and second laws of thermodynamics are discussed in relation to refrigeration systems to show how system performance differs from one law to another. Comparative energy and exergy analyses and assessments of single effect, double effect, triple effect and quadruple effect absorption refrigeration system are performed to illustrate the impact of an increase in the number of effects on system performance. In particular, the second law (exergy) formulation for absorption refrigeration systems, rarely discussed by other works, is covered in detail. Integrated Absorption Refrigeration Systems will help researchers, students and instructors in the formulation of energy and exergy efficiency equations for absorption refrigeration systems.

Download or read book Renewable Energy Systems written by Ahmad Taher Azar and published by Academic Press. This book was released on 2021-09-09 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: Renewable Energy Systems: Modelling, Optimization and Control aims to cross-pollinate recent advances in the study of renewable energy control systems by bringing together diverse scientific breakthroughs on the modeling, control and optimization of renewable energy systems by leading researchers. The book brings together the most comprehensive collection of modeling, control theorems and optimization techniques to help solve many scientific issues for researchers in renewable energy and control engineering. Many multidisciplinary applications are discussed, including new fundamentals, modeling, analysis, design, realization and experimental results. The book also covers new circuits and systems to help researchers solve many nonlinear problems. This book fills the gaps between different interdisciplinary applications, ranging from mathematical concepts, modeling, and analysis, up to the realization and experimental work. Covers modeling, control theorems and optimization techniques which will solve many scientific issues for researchers in renewable energy Discusses many multidisciplinary applications with new fundamentals, modeling, analysis, design, realization and experimental results Includes new circuits and systems, helping researchers solve many nonlinear problems

Download or read book Geothermal Energy Utilization and Technologies 2020 written by Carlo Roselli and published by MDPI. This book was released on 2021-08-31 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rising pollution, climate change and the depletion of fossil fuels are leading many countries to focus on renewable-based energy conversion systems. In particular, recently introduced energy policies are giving high priority to increasing the use of renewable energy sources, the improvement of energy systems’ security, the minimization of greenhouse gas effect, and social and economic cohesion. Renewable energies’ availability varies during the day and the seasons and so their use must be accurately predicted in conjunction with the management strategies based on load shifting and energy storage. Thus, in order to reduce the criticalities of this uncertainty, the exploitation of more flexible and stable renewable energies, such as the geothermal one, is necessary. Geothermal energy is an abundant renewable source with significant potential in direct use applications, such as in district heating systems, in indirect use ones to produce electricity, and in cogeneration and polygeneration systems for the combined production of power, heating, and cooling energy. This Special Issue includes geothermal energy utilization and the technologies used for its exploitation considering both the direct and indirect use applications.

Download or read book Recent Trends in Mechanical Engineering written by Ambrish Maurya and published by Springer Nature. This book was released on 2023-06-07 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the select papers presented at the International Conference on Progressive Research in Industrial & Mechanical Engineering (PRIME 2021), held at the National Institute of Technology (NIT) Patna, India. The book discusses various aspects related and relevant to core areas of mechanical engineering including engineering design, production engineering, industrial engineering, automobile engineering, thermal and fluids engineering, mechatronics, control and robotics and other inter-disciplinary emerging topics for potential use in a spectrum of applications. The book will be a valuable reference for students, researchers and professionals interested in mechanical engineering and allied fields.

Download or read book Emerging Trends in Energy Conversion and Thermo Fluid Systems written by Dilip Sharma and published by Springer Nature. This book was released on 2022-08-20 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents select proceedings of the International Conference on Energy Conversion and Thermo-fluid Systems (i-CONECTS 2021). It covers the latest trends in the areas of energy conversion and thermofluid systems. The topics covered include enhanced heat transfer, multi-phase flows, power generation technologies, fluid-structure interaction, alternative fuels, micro- and-nano-scale heat and mass transfer, energy, emissions control technologies, etc. The book will be a valuable reference for the researchers and professionals interested in the energy conversion technologies and allied fields.

Download or read book Nanofluid Applications for Advanced Thermal Solutions written by Shriram S. Sonawane and published by Elsevier. This book was released on 2023-06-28 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanofluid Applications for Advanced Thermal Solutions covers heat transfer applications of nanofluids in a variety of fields and the main techniques used in nanofluid flow and heat transfer analysis. The book features an introduction to heat transfer, nanofluid conduction, convection and nanofluid boiling and provides a thorough understanding of a variety of applications, including the energy storage component of solar PVT systems. It covers fundamental topics such as the analysis and measurement of thermophysical properties, convection, and heat transfer equipment performance, and provides a rigorous framework to assist readers in developing new nanofluid-based devices. Finally, the book explores convective instabilities, nanofluids in porous media, and entropy generation in nanofluids. This will be a valuable resource for upper undergraduate, postgraduate, and doctoral students and researchers in the fields of nanotechnology and nanofluids looking at heat transfer processes in chemical engineering and the petroleum industry. Provides a comprehensive overview of the heat transfer application of nanofluids in a variety of fields Features numerical and experimental investigations of hybrid and mono nanoparticles based nanofluids Explores comparative performance investigations of various nanofluids for absorption/regeneration and metal extraction/stripping operations Provides case examples of operation and scale-up challenges for nanofluid applications in the industrial process

Download or read book Cogeneration and Polygeneration Systems written by Majid Amidpour and published by Academic Press. This book was released on 2020-11-03 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cogeneration and Polygeneration Systems explores the suite of state-of-the-art modeling, design, analysis and optimization procedures for creating and retooling optimally efficient combined heat and power (CHP) and polygeneration energy systems. The book adopts exergetic and thermoeconomic analysis and related modeling and simulation tools to inform performance and systems design in modern cogeneration plants. Chapters provide a methodical approach to the design, operation and troubleshooting of cogeneration systems when they are integrated with industrial processes. Cogeneration targets, environmental impacts, total site integration, and availability and reliability issues are addressed in-depth. Explores exergetic and exergoeconomic analysis for optimization purposes of CHP systems Addresses availability and reliability issues within cogeneration systems Reviews modern polygeneration systems based on renewable energy resources and fuel cells

Download or read book Efficiency Performance and Robustness of Gas Turbines written by Konstantin Volkov and published by BoD – Books on Demand. This book was released on 2012-04-04 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wide range of issues related to analysis of gas turbines and their engineering applications are considered in the book. Analytical and experimental methods are employed to identify failures and quantify operating conditions and efficiency of gas turbines. Gas turbine engine defect diagnostic and condition monitoring systems, operating conditions of open gas turbines, reduction of jet mixing noise, recovery of exhaust heat from gas turbines, appropriate materials and coatings, ultra micro gas turbines and applications of gas turbines are discussed. The open exchange of scientific results and ideas will hopefully lead to improved reliability of gas turbines.

Download or read book Refrigeration Systems and Applications written by Ciro Aprea and published by MDPI. This book was released on 2019-12-06 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Special Issue “Refrigeration Systems and Applications” aims to encourage researchers to address the concerns associated with climate change and the sustainability of artificial cold production systems, and to further the transition to the more sustainable technologies and methodologies of tomorrow through theoretical, experimental, and review research on the different applications of refrigeration and associated topics.

Download or read book Magnetocaloric Energy Conversion written by Andrej Kitanovski and published by Springer. This book was released on 2014-12-03 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the latest research on a new alternative form of technology, the magnetocaloric energy conversion. This area of research concerns magnetic refrigeration and cooling, magnetic heat pumping and magnetic power generation. The book’s systematic approach offers the theoretical basis of magnetocaloric energy conversion and its various sub domains and this is supported with the practical examples. Besides these fundamentals, the book also introduces potential solutions to engineering problems in magnetocalorics and to alternative technologies of solid state energy conversion. The aim of the book is therefore to provide engineers with the most up-to-date information and also to facilitate the understanding, design and construction of future magnetocaloric energy conversion devices. The magnetocaloric energy conversion represents an alternative to compressor based refrigerators and heat pumps. It is a serious alternative to power generation with low enthalpy heat sources. This green technology offers an opportunity to use environmentally friendly solid refrigerants and the potentially high energy efficiency follows the trends of future energy conversion devices. This book is intended for postgraduate students and researchers of refrigeration, heat pumping, power generation alternatives, heat regenerators and advanced heat transfer mechanisms.

Download or read book Ejectors for Efficient Refrigeration written by Giuseppe Grazzini and published by Springer. This book was released on 2018-03-21 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Encompassing both practical applications and recent research developments, this book takes the reader from fundamental physics, through cutting-edge new designs of ejectors for refrigeration. The authors’ unique vision marries successful design, system optimization, and operation experience with insights on the application of cutting-edge Computational Fluid Dynamics (CFD) models. This robust treatment leads the way forward in developing improved ejector technologies. The book covers ejectors used for heat powered refrigeration and for expansion work recovery in compression refrigerators, with special emphasis on two-phase flows of “natural” fluids within the ejector, i.e. steam and carbon dioxide. It features worked examples, detailed research results, and analysis tools.

Download or read book Solar Energy written by Himanshu Tyagi and published by Springer Nature. This book was released on 2019-10-14 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers challenges and opportunities related to solar-energy based systems. It covers a wide variety of topics related to solar energy, including applications-based systems such as solar thermal systems that are focused on drying, desalination, space cooling, refrigeration, and processing; recent advances in solar cells (DSSC) and photovoltaics; technologies for storage of energy (both sensible heating as well as latent heating); and the design of concentrated solar receivers. The information is presented in the context of the overall global energy utilization, and the role of solar energy has been highlighted. The contents of this book will be of interest to researchers, professionals, and policymakers alike.

Download or read book The Exergy Method of Thermal Plant Analysis written by T. J. Kotas and published by Elsevier. This book was released on 2013-10-22 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Exergy Method of Thermal Plant Analysis aims to discuss the history, related concepts, applications, and development of the Exergy Method - analysis technique that uses the Second Law of Thermodynamics as the basis of evaluation of thermodynamic loss. The book, after an introduction to thermodynamics and its related concepts, covers concepts related to exergy, such as physical and chemical exergy, exergy concepts for a control method and a closed-system analysis, the exergy analysis of simple processes, and the thermocentric applications of exergy. A seven-part appendix is also included. Appendices A-D covers miscellaneous information on exergy, and Appendix E features charts of thermodynamic properties. Appendix F is a glossary of terms, and Appendix G contains the list of references. The text is recommended for physicists who would like to know more about the Exergy Method, its underlying principles, and its applications not only in thermal plant analysis but also in certain areas.

Download or read book Emerging Trends in Energy Storage Systems and Industrial Applications written by Dr. Prabhansu and published by Elsevier. This book was released on 2022-10-09 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy storage plays an important role in supporting power-hungry devices and achieving stable power supply by optimally balancing supply and demand with ever-increasing requirement for computing power and the intermittent nature of renewable resources. Emerging Trends in Energy Storage Systems and Industrial Applications focuses on emerging trends in energy storage systems, applicable to various types of applications including heat and power generation, electrical and hybrid transportation. With performance limitations in current energy storage devices, such as limited energy density, power density, and cycle life, major challenges in the complex and dynamic environments of energy storage applications are examined in this reference. High-performance components, proper system configuration, effective modelling and control are keys to achieving seamlessly integrated and functional energy storage systems are also addressed, in order to provide guidance to achieving more reliable and efficient systems. Outcomes from this book serve as a resource for industrialists, academia and researchers working in the domain of advance energy storage technologies and their applications, giving them an overview of energy storage options, availability and technological trends enabling them to make longer-term, safe storage system decisions. Presents a better understanding of the smart energy storage technologies: system, management, and implementation Explores all energy storage system: integration, power quality, and operation Offers an interdisciplinary look across electrical, electronics, energy, mechanical, civil, and chemical engineering aspects of energy storage