Download or read book Compressed Air Energy Storage An Exergy based Analysis of Turbomachinery Systems written by James Konrad and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Compressed Air Energy Storage written by David S-K. Ting and published by IET. This book was released on 2021-10-29 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: A systematic overview of the state of Compressed Air Energy Storage (CAES) technology, covering the key components and principal types of systems in the order of technical maturity: diabatic, adiabatic, and isothermal. Existing major systems and prototypes and economics are also addressed.
Download or read book Study of Selected Turbomachinery Components for Compressed Air Energy Storage Systems Final Report written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An analytical study was performed to estimate the performance, size, and selling prices of selected turbine and compressor components associated with Compressed Air Energy Storage (CAES) systems. The characteristics of the low compressors, the low turbines, and the advanced-technology expander turbines were identified through the use of sophisticated computer models. The characteristics for the booster compressor modules and for expander turbines are given. All results relating to estimates of performance levels and physical unit sizes are representative of state-of-the-art design which could be reduced to actual practice given a suitably defined commercialization program. The unit prices, expressed in mid-1977 dollar values, are those minimum levels believed necessary to cover all program costs and to produce a rate-of-return representative of those achieved by present participants in the production of industrial-type turbomachinery components. It is believed that both sets of selling price estimates are of sufficient reliability that they may be used for budgetary estimatingpurposes by organizations interested in investigating the feasibility of this electric power generating method. However, these price estimates do not constitute an offer of the vendors who assisted in this program to supply turbomachinery components to meet the design and performance levels studied.
Download or read book Study of Selected Turbomachinery Components for Compressed Air Energy Storage Systems written by W. Richard Davison and published by . This book was released on 1977 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Parametric Analysis of Turbomachinery Options for Compressed Air Energy Storage Plants written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A parametric study of possible turbomachinery options for compressed air energy storage plants is presented. The plant is divided into the four subsystems: a turbine system, compressor system, motor/generator, and an underground air storage reservoir. The turbine system comprises a high-pressure turbine, a low-pressure turbine, two combustors, and a recuperator. The compressor system comprises a low-pressure compressor, high-pressure compressor, booster compressor, intercoolers, and an aftercooler. A water-compensated mined cavern constitutes the underground air-storage reservoir. Plant performance is presented in terms of five parameters: specific air flow rate, specific heat rate, specific storage volume, specific compression rate, and overall plant efficiency. The capital and operating costs of the plant as a function of the turbomachinery options are presented. Design variables of the turbomachinery are the reservoir pressure and inlet gas temperatures to the turbines.
Download or read book Adiabatic Compressed Air Energy Storage written by Daniel Pottie and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Steady State and Time Dependent Compressed Air Energy Storage Model Validated with Huntorf Operational Data and Investigation of Hydrogen Options for a Sustainable Energy Supply written by Friederike Kaiser and published by Cuvillier Verlag. This book was released on 2020-12-17 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind power and photovoltaic energy play a significant role in sustainable energy systems. However, these two renewable energy sources do not generate electrical energy on demand and are subject to natural fluctuations. Thus, the need for compensatory measures arises. Compressed air energy storage power plants (CAES) are a possible solution to providing negative and positive control energy in the electric grid. However, in contrast to other energy storage devices such as pumped hydro energy storage or batteries, the storage medium compressed air hardly contains any energy (or more precisely: enthalpy). Yet, compressed air storage allows the operation of highly efficient gas turbines, which are not only particularly fast available but also achieve better efficiency than combined cycle power plants used today, as illustrated by the example of the modern gas and steam power plant Irsching with ηtc = 60%from 2011 compared to the 20 years older McIntosh CAES with ηtc = 82.4 %. In this thesis, the calculation methods for the thermodynamics of the CAES process are presented and validated by measured data from the operations of the CAES power plant Huntorf. Both the steady state and the dynamic (time-dependent) analyses of the process take place. The characteristic value efficiency is discussed in detail, since numerous different interpretations for CAES exist in the literature. A new calculation method for the electric energy storage efficiency is presented, and a method for the calculation of an economically equivalent electricity storage efficiency is developed. Consideration is given to the transformation of the CAES process into a hydrogen-driven and, thus, greenhouse gas-free process. Finally, a model CAES system is tested in a 100 % renewable model environment. Consequently, it can be stated that in the steady-state thermodynamic calculation in particular, the consideration of realistic isentropic efficiencies of compressors and turbines is essential to correctly estimate the characteristic values of the process. Furthermore, a steadystate view should always be accompanied by dynamic considerations, since some process characteristics are always time-dependent. The simulation shows that by mapping transient operating conditions, the overall efficiency of the system must be corrected downwards. Nevertheless, in the model environment of a 100 % renewable energy system, it has been shown that a CAES is a useful addition that can provide long-term energy storage.
Download or read book Evaluation of Turbomachinery for Compressed Air Energy Storage Plants written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of possible turbomachinery options for compressed air energy storage plants is presented. The plant is divided into four subsystems: a turbine system, compressor system, motor/generator, and an underground air storage reservoir. The turbine system comprises a high-pressure turbine and combustor, a low-pressure turbine and combustor, and a recuperator. The compressor system comprises a low-pressure compressor, booster compressor, intercoolers, and an aftercooler. A water-compensated mined cavern constitutes the underground air-storage reservoir. Plant performance is presented in terms of five parameters: specific air flow rate, specific heat rate, specific storage volume, specific compression rate, and overall plant efficiency. The capital and operating costs of the plant as a function of the turbomachinery options are presented. Design variables of the turbomachinery are the reservoir pressure and inlet gas temperatures to the turbines.
Download or read book Modelling Axial Turbomachinery for Compressed Air Energy Storage written by Jorge Gonzalez-Gonzalez and published by . This book was released on 2018 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change and negative environmental effects from a human's life style have ignited the search for grid-scale electricity production from renewable energy sources. Significant advances with respect to renewable energy conversion into electricity has been achieved in recent years. However, their integration with the electrical grid is still an unsolved problem because the natural intermittency associated with them. Grid-scale energy storage can be the solution to the intermittency problem; of all the types or storage, compressed air energy storage (CAES) is one of the most promising potential solutions to effectively integrate renewable energies to the grid. CAES consists in compressing air during times when the electricity production is larger than the demand. This compressed air is stored in a huge reservoir; it is then used during peak demand times to run gas turbines which are connected to power generators. Literature about steady state CAES is widely available; topics such as system efficiency, fuel free CAES, and reservoir sizing being arguably the most commonly published. However, there are very few works about dynamic state of a CAES system; and there are next to no publications regarding the transient modelling of the turbomachinery for CAES. This thesis develops two independent dynamic models of axial turbomachines for CAES systems; one for a compressor and one for a turbine. These models should be able to represent the behavior of the machines, as well as easily connect with the rest of the components of the system. For these reasons, the models are developed in the SIMULINKʼ environment, which is a tool commonly used for electrical modelling. The models use the time domain, and are based on compressor and turbine performance maps, which make them representative, and let them require a short simulation time. The objective of the simulations is to see how the models behave with regards to power inefficiency, part-load operation; and the effects on the complete operation caused by the system inertias. The models can replicate the operation of any axial turbomachine provided the respective map, and can be also used with centrifugal compressors. Upon running the simulations, a round trip efficiency of 55% was obtained. Furthermore, it takes 296 seconds to increase the pressure of a cavern of 3000 m3 from 422.18 Kpa to 747.4 Kpa. The simulated turbine of 167 MW and design speed of 17000 rpm, with a nominal mass flow rate of 400 kg/s, will take 778 seconds to reach its nominal speed.
Download or read book Turbomachinery Engineering and Optimization for 25 MW Compressed Air Energy Storage Systems written by R. Schainker and published by . This book was released on 1984 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Workshop on Compressed Air Energy Storage System written by and published by . This book was released on 1976 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Turbomachinery Design Criteria for Compressed Air Energy Storage Plants written by Paul Zaugg and published by . This book was released on 1979 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Economics of Compressed Air Energy Storage Employing Thermal Energy Storage written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The approach taken in this study is to adopt system design and capital cost estimates from three independent CAES studies (eight total designs) and, by supplying a common set of fuel/energy costs and economic assumptions in conjunction with a common methodology, to arrive at a series of levelized energy costs over the system's lifetime. In addition, some analyses are provided to gauge the sensitivity of these levelized energy costs to fuel and compression energy costs and to system capacity factors. The systems chosen for comparison are of four generic types: conventional CAES, hybrid CAES, adiabatic CAES, and an advanced-design gas turbine (GT). In conventional CAES systems the heat of compression generated during the storage operation is rejected to the environment, and later, during the energy-generation phase, turbine fuel must be burned to reheat the compressed air. In the hybrid systems some of the heat of compression is stored and reapplied later during the generation phase, thereby reducing turbine fuel requirements. The adiabatic systems store adequate thermal energy to eliminate the need for turbine fuel entirely. The gas turbine is included within the report for comparison purposes; it is an advanced-design turbine, one that is expected to be available by 1985.
Download or read book 1978 Compressed Air Energy Storage Symposium Proceedings May 15 18 1978 Asilomar Conference Grounds Pacific Grove California written by and published by . This book was released on 1978 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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
Download or read book Mechanical Energy Storage for Renewable and Sustainable Energy Resources written by Abdul Hai Alami and published by Springer Nature. This book was released on 2019-12-16 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: The available literature on energy storage technologies in general, and mechanical energy storage in particular, is lacking in terms of both quantity and quality. This edited volume focuses on novel (yet uncomplicated) ideas that are currently part of the Energy Storage curriculum at the University of Sharjah, UAE. These techniques have been extensively researched and their prototypes are central to the undergraduate Energy Storage Lab that is associated with the course. Although ideally suited for wind energy storage, the techniques described are also suitable for renewable energy storage in general, and offer high two-way efficiency ratings.
Download or read book Integration of Alternative Sources of Energy written by Felix A. Farret and published by John Wiley & Sons. This book was released on 2006-04-20 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique electrical engineering approach to alternative sources ofenergy Unlike other books that deal with alternative sources of energyfrom a mechanical point of view, Integration of Alternative Sourcesof Energy takes an electrical engineering perspective. Moreover,the authors examine the full spectrum of alternative and renewableenergy with the goal of developing viable methods of integratingenergy sources and storage efficiently. Readers become thoroughlyconversant with the principles, possibilities, and limits ofalternative and renewable energy. The book begins with a general introduction and then reviewsprinciples of thermodynamics. Next, the authors explore both commonand up-and-coming alternative energy sources, including hydro,wind, solar, photovoltaic, thermosolar, fuel cells, and biomass.Following that are discussions of microturbines and inductiongenerators, as well as a special chapter dedicated to energystorage systems. After setting forth the fundamentals, the authorsfocus on how to integrate the various energy sources for electricalpower production. Discussions related to system operation,maintenance, and management, as well as standards forinterconnection, are also set forth. Throughout the book, diagrams are provided to demonstrate theelectrical operation of all the systems that are presented. Inaddition, extensive use of examples helps readers better grasp howintegration of alternative energy sources can beaccomplished. The final chapter gives readers the opportunity to learn about theHOMER Micropower Optimization Model. This computer model, developedby the National Renewable Energy Laboratory (NREL), assists in thedesign of micropower systems and facilitates comparisons of powergeneration techniques. Readers can download the software from theNREL Web site. This book is a must-read for engineers, consultants, regulators,and environmentalists involved in energy production and delivery,helping them evaluate alternative energy sources and integrate theminto an efficient energy delivery system. It is also a superiortextbook for upper-level undergraduates and graduate students.
