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Analysis Of Innovative Vapor Compression And Thermal Energy Storage Systems Using Alternative Refrigerants
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Book Synopsis Analysis of Innovative Vapor Compression and Thermal Energy Storage Systems Using Alternative Refrigerants by : Bahaa Morad
Download or read book Analysis of Innovative Vapor Compression and Thermal Energy Storage Systems Using Alternative Refrigerants written by Bahaa Morad and published by . This book was released on 2016 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This research presents detailed analyses of innovative single and two stages vapor compression refrigeration cycles (VCRCs) as well as a cold thermal energy system (CTES) for residential and commercial cooling applications. Different subcooling systems, such as dedicated mechanical subcooling (DMSC) and liquid-vapor heat exchangers (LVHX) using various refrigerants are investigated and analyzed. Results indicate that subcooling systems have great impacts on increasing the overall energetic and exergetic COPs of VCRC. The energetic and the exergetic COPs of the single stage VCRC with LVHX using R134a are 5.50 and 0.178, respectively. Whereas, for the innovative two stages VCRC with DMSC systems and R134a, energetic end exegetic COPs are found to be 5.83 and 0.189, respectively. A direct contact heat transfer CTES system using R134a-clathrate as a storage medium is investigated experimentally on a single-stage VCRC at different operating conditions. Some of the investigated operating conditions used to evaluate the storage medium behavior (clathrate) and the overall system performance are compressor speed, refrigerant mass flow rate, and different water to refrigerant mass ratios. Using R134a, it is found that at lower refrigerant mass flow rate between 0.5 to 0.8 kg/min, the clathrate is formed at longer durations, and COPs of operating cycles are found to be low compared to VCRCs. At a higher mass flow rate of 1.2 kg/min, the COPs of the CTES systems are found to be between 11.81 and 11.85, which is higher than the corresponding single stage VCRCs with LVHX by 42.5 to 44.5% and higher that the VCRC with DMSC by 41.3% to 43%. Current results show that at lower compressor speed of 2100 rpm and constant R-134a mass flow rate of 1.2 kg/sec, the COP is improved by 17%; whereas, at higher compressor speed of 2900 rpm, the COP is decreased by 23%. At higher water/R134a mass ratios in the crystallizer (storage tank), COPs are found to be decreasing due to the increase in charging times needed to form the clathrate compared to all other cases. Finally, the experimental and simulation results indicate that the CTES systems have higher COPs as compared to innovative VCRCs."--Abstract.
Book Synopsis Innovations in Green Urbanization and Alternative Renewable Energy by : Federica Rosso
Download or read book Innovations in Green Urbanization and Alternative Renewable Energy written by Federica Rosso and published by Springer Nature. This book was released on 2022-10-19 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book thoroughly examines the aims of green urbanism, providing a perspective to help responding to the growing environmental challenges posed by the enormous increase in human needs. The book gives insights about architectural intervention in urban planning which provides green design strategies in a way that improves the efficiency of building in terms of energy consumption and environmental conservation. The book also gives attention to the paradigm of the `intermediate city’, thus, helping in overcoming the challenges posed by the growing urbanization process. Finally, the book gives a futuristic vision of cities, anticipating their challenges and providing possible solutions for them. The book targets a wide audience interested in implementing the SDG goals in energy and green urban planning, and those interested the interdisciplinary nature of green urbanization and alternative and renewable energy accommodates. The book is a culmination of selected research papers from the 4th version of the International Online Conference on Green Urbanism (GU) of Roma Tre University, Italy (2020) & the 3rd version of the International Online Conference on Alternative and Renewable Energy Quest (2020).
Download or read book Miscellaneous Publication written by and published by . This book was released on 1981 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Small Business Innovation Research by : DIANE Publishing Company
Download or read book Small Business Innovation Research written by DIANE Publishing Company and published by DIANE Publishing. This book was released on 1994 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Refrigeration Systems and Applications by : Ibrahim Din¿er
Download or read book Refrigeration Systems and Applications written by Ibrahim Din¿er and published by John Wiley & Sons. This book was released on 2017-03-23 with total page 990 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 Applied Mechanics Reviews written by and published by . This book was released on 1994 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Indirect Dew-Point Evaporative Cooling: Principles and Applications by : Jie Lin
Download or read book Indirect Dew-Point Evaporative Cooling: Principles and Applications written by Jie Lin and published by Springer Nature. This book was released on 2023-05-26 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book systematically discusses state-of-the-art dew-point evaporative cooling and provides key insights into current research efforts and future research interests. Novel energy-efficient and environment-friendly cooling technologies are essential to reduce the sharply rising energy consumption and greenhouse gas emissions and achieve carbon neutrality. Conventional air-conditioners which adopt a vapor compression cycle are neither energy-efficient nor sustainable due to the use of compressors and chemical refrigerants, as well as their intrinsic coupling of sensible and latent cooling loads. With the merits of high energy efficiency and the ability to decouple cooling loads without using chemical refrigerants, indirect dew-point evaporative cooling provides an ideal alternative solution to air conditioning in a variety of applications. A comprehensive review of evaporative cooling and their underlying engineering challenges is included. Advanced engineering and modeling experience critical to the development of dew-point evaporative coolers are highlighted. The effective analysis techniques for dew-point evaporative coolers are documented, and their intrinsic characteristics captured by these methods are reported. Lastly, advanced dew-point evaporative cooling systems in various energy-connected applications are discussed by providing multiple case studies. Specifically targeted at HVAC engineers, thermal scientists, and energy-engineering researchers, this book will balance fundamental concepts, industrial applications, and leading-edge research. As this book provides readers with depth and breadth of coverage, it can also be used by graduate-level students in relevant fields.
Book Synopsis The Exergy Method of Thermal Plant Analysis by : T. J. Kotas
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 Cryocoolers 13 written by Ronald G. Ross and published by Springer Science & Business Media. This book was released on 2007-02-15 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last two years have witnessed a continuation in the breakthrough shift toward pulse tube cryocoolers for long-life, high-reliability cryocooler applications. New this year are papers de scribing the development of very large pulse tube cryocoolers to provide up to 1500 watts of cooling for industrial applications such as cooling the superconducting magnets of Mag-lev trains, coolmg superconducting cables for the power mdustry, and liquefymg natural gas. Pulse tube coolers can be driven by several competing compressor technologies. One class of pulse tube coolers is referred to as "Stirling type" because they are based on the linear Oxford Stirling-cooler type compressor; these generally provide coolmg m the 30 to 100 K temperature range and operate ^t frequencies from 30 to 60 Hz. A second type of pulse tube cooler is the so-called "Gifford-McMahon type. " Pulse tube coolers of this type use a G-M type compressor and lower frequency operation (~1 Hz) to achieve temperatures in the 2 to 10 K temperature range. The third type of pulse tube cooler is driven by a thermoacoustic oscillator, a heat engine that functions well in remote environments where electricity is not readily available. All three types are described, and in total, nearly half of this proceedings covers new developments in the pulse tube arena. Complementing the work on low-temperature pulse tube and Gifford-McMahon cryocoolers is substantial continued progress on rare earth regenerator materials.
Book Synopsis Energy Innovation for the Twenty-First Century by : Jim Skea
Download or read book Energy Innovation for the Twenty-First Century written by Jim Skea and published by Edward Elgar Publishing. This book was released on 2019 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the question: how effective are countries in promoting the innovation needed to facilitate an energy transition? At the heart of the book is a set of empirical case studies covering supply and demand side technologies at different levels of maturity in a variety of countries. The case studies are set within an analytical framework encompassing the functions of technological innovation systems and innovation metrics. The book concludes with lessons and recommendations for effective policy intervention.
Book Synopsis Innovative Materials for Processes in Energy Systems - For Fuel Cells, Heat Pumps and Sorption Systems by :
Download or read book Innovative Materials for Processes in Energy Systems - For Fuel Cells, Heat Pumps and Sorption Systems written by and published by Research Publishing Service. This book was released on 2011 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Book Synopsis Proceedings of the 26th Intersociety Energy Conversion Engineering Conference by :
Download or read book Proceedings of the 26th Intersociety Energy Conversion Engineering Conference written by and published by . This book was released on 1991 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Solar Energy and Nonfossil Fuel Research by :
Download or read book Solar Energy and Nonfossil Fuel Research written by and published by . This book was released on 1980 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Alternatives in Refrigeration and Air Conditioning by : S. C. Kaushik
Download or read book Alternatives in Refrigeration and Air Conditioning written by S. C. Kaushik and published by I K International Pvt Ltd. This book was released on 2016-04-19 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highlights the issues related to ozone layer depletion and global warming due to use of conventional cooling technologies and refrigerants in the field of Refrigeration and Air Conditioning (RAC). It describes, simulates and analyses the alternate technologies and alternate refrigerants. Unconventional refrigeration technologies are explored.
Book Synopsis Emerging Technologies in Airconditioning and Refrigeration by :
Download or read book Emerging Technologies in Airconditioning and Refrigeration written by and published by Allied Publishers. This book was released on 2001 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Polygeneration Systems by : Francesco Calise
Download or read book Polygeneration Systems written by Francesco Calise and published by Academic Press. This book was released on 2021-09-22 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: The support for polygeneration lies in the possibility of integrating different technologies into a single energy system, to maximize the utilization of both fossil and renewable fuels. A system that delivers multiple forms of energy to users, maximizing the overall efficiency makes polygeneration an emerging and viable option for energy consuming industries. Polygeneration Systems: Design, Processes and Technologies provides simple and advanced calculation techniques to evaluate energy, environmental and economic performance of polygeneration systems under analysis. With specific design guidelines for each type of polygeneration system and experimental performance data, referred both to single components and overall systems, this title covers all aspects of polygeneration from design to operation, optimization and practical implementation. Giving different aspects of both fossil and non-fossil fuel based polygeneration and the wider area of polygeneration processes, this book helps readers learn general principles to specific system design and development through analysis of case studies, examples, simulation characteristics and thermodynamic and economic data. Detailed economic data for technology to assist developing feasibility studies regarding the possible application of polygeneration technologies Offers a comprehensive list of all current numerical and experimental results of polygeneration available Includes simulation models, cost figures, demonstration projects and test standards for designers and researchers to validate their own models and/or to test the reliability of their results
