Download or read book Advanced Binary Geothermal Power Plants Working Fluid Property Determination and Heat Exchanger Design written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance of binary geothermal power plants can be improved through the proper choice of a working fluid, and optimization of component designs and operating conditions. This paper reviews the investigations at the Idaho National Engineering Laboratory (INEL) which are examining binary cycle performance improvements for moderate temperature (350 to 400 F) resources with emphasis on how the improvements may be integrated into design of binary cycles. These investigations are examining performance improvements resulting from the supercritical vaporization of mixed hydrocarbon working fluids and achieving countercurrent integral condensation with these fluids, as well as the modification of the turbine inlet state points to achieve supersaturated turbine vapor expansions. For resources where the brine outlet temperature is restricted, the use of turbine exhaust recuperators is examined. The baseline plant used to determine improvements in plant performance (characterized by the increase in the net brine effectiveness, watt-hours per pound of brine) in these studies operates at conditions similar to the 45 MW Heber binary plant. Through the selection of the optimum working fluids and operating conditions, achieving countercurrent integral condensation, and allowing supersaturated vapor expansions in the turbine, the performance of the binary cycle (the net brine effectiveness) can be improved by 25 to 30% relative to the baseline plant. 15 refs., 7 figs.

Download or read book Advanced Binary Geothermal Power Plancts Working Fluid Property Determination and Heat Exchanger Design written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance of binary geothermal power plants can be improved through the proper choice of a working fluid, and optimization of component designs and operating conditions. This paper reviews the investigations at the Idaho National Engineering Laboratory (INEL) which are examining binary cycle performance improvements: for moderate temperature (350 to 400 F) resources with emphasis on how the improvements may be integrated into design of binary cycles. These investigations are examining performance improvements resulting from the supercritical vaporization of mixed hydrocarbon working fluids and achieving countercurrent integral condensation with these fluids, as well as the modification of the turbine inlet state points to achieve supersaturated turbine vapor expansions. For resources where the brine outlet temperature is restricted, the use of turbine exhaust recuperators is examined. The baseline plant used to determine improvements in plant performance (characterized by the increase in the net brine effectiveness, watt-hours per pound of brine) in these studies operates at conditions similar to the 45 MW Heber binary plant. Through the selection of the optimum working fluids and operating conditions, achieving countercurrent integral condensation, and allowing supersaturated vapor expansions in the turbine, the performance of the binary cycle (the net brine effectiveness) can be improved by 25 to 30% relative to the baseline plant. The design of these supercritical Rankine-cycle (Binary) power plants for geothermal resources requires information about the potential working fluids used in the cycle. In addition, methods to design the various components, (e.g., heat exchangers, pumps, turbines) are needed. This paper limits its view of component design methods to the heat exchangers in binary power plants. The design of pumps and, turbines for these working fluids presents no new problems to the turbine manufacturer. However, additional work is proceeding at the Heat Cycle Research Facility to explore metastable expansions within turbines. This work, when completed, should allow the designer more flexibility in the state point selection in the design of these cycles which will potentially increase the system performance. The paper explores the different systems of thermodynamic and transport properties for mixtures of hydrocarbons. Methods include a computer program EXCST developed at the National Bureau of Standards in Boulder, as well as some of the thermodynamic models available in the chemical process simulation code, ASPEN, which was originally developed by the Department of Energy. The heat exchanger design methodology and computer programs of Heat Transfer Research, Inc. (HTRI) have been used because they represent data which is used throughout the industry by A & E firms as well as most heat exchanger manufacturers. For most cases, some modification of the computer results are necessary for supercritical heater design. When condensation takes place on the inside of enhanced tubes, new methods beyond HTRI's present state are necessary. The paper will discuss both of these modifications.

Download or read book Proceedings written by and published by . This book was released on 1989 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1989 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling of Geothermal Power Plants Using the Binary Fluid Cycle written by Ronald A. Walter and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In light of the current world-wide energy situation, the utilization of the immense reserves of geothermal energy is being actively pursued. The thermal energy contained in a geothermal reservoir is mainly stored in rocks, but is also held in liquid water and/or steam. The generation of electrical power from these geothermal reserves is currently limited. The majority of operating geothermal power plants either use available dry steam or steam flashed from hot water. If this resource is to make a significant impact on the world energy market, successful methods must be found to utilize the larger quantity of lower temperature and high salinity reservoirs. One of the most promising methods proposed to date for efficient use of these reservoirs is the binary fluid cycle. The topic of this thesis is the formulation of a computer model of a geothermal power plant using the binary fluid cycle. In the binary fluid cycle plant, geothermal fluid is extracted from a geothermal reservoir and transmitted to the power plant in a liquid state. At the power plant, the geothermal fluid is passed through a series of heat exchangers where thermal energy is transferred to a working, or power fluid such as a Freon or a light hydrocarbon. This working fluid is brought to a superheated state and then expanded through a turbine which is coupled to a generator. After expansion, the working fluid is condensed in a surface condenser supplied with cooling water from a cooling tower. This fluid is subsequently repressurized and returned to the heat exchangers. The expended geothermal fluid is returned to the underground reservoir. The objective of this thesis was to develop a computer program which effectively simulates the binary fluid cycle power plant and all its components. The geothermal power plant model includes the following: determination of the size and nature of power plant components, determination of geothermal fluid flow rates, working fluid flow rates, and heat rejection requirements for a variety of geothermal source temperatures, pressures and water conditions, and plant sizes, calculation of geothermal fluid and working fluid, thermodynamic and physical properties, thermodynamic cycle calculations, overall design performance with the ability to perform sensitivity analyses on various operating parameters. After the completion of this computer model, a particular working fluid, isobutane, was selected for an in-depth study of the binary fluid cycle power plant. The optimum power plant designs for a range of available geothermal fluid temperatures were found based on economics and efficient plant performance.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1989 with total page 1148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermodynamic Analysis and Optimization of Geothermal Power Plants written by Can Ozgur Colpan and published by Elsevier. This book was released on 2021-02-19 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermodynamic Analysis and Optimization of Geothermal Power Plants guides researchers and engineers on the analysis and optimization of geothermal power plants through conventional and innovative methods. Coverage encompasses the fundamentals, thermodynamic analysis, and optimization of geothermal power plants. Advanced thermodynamic analysis tools such as exergy analysis, thermoeconomic analysis, and several thermodynamic optimization methods are covered in depth for different configurations of geothermal power plants through case studies. Interdisciplinary research with relevant economic and environmental dimensions are addressed in many of the studies. Multiobjective optimization studies aimed at better efficiency, lower cost, and a lower environmental impact are also discussed in this book. - Addresses the complexities of thermodynamic assessment in almost all operational plant configurations, including solar-geothermal and multigeneration power plants - Includes an exemplary range of case studies, from basic to integrated - Provides modern optimization methods including exergoeconomic, artificial neural networks, and multiobjective particle swarm - Covers environmental impact considerations and integration with renewable energy systems

Download or read book Design and Off design Operation of a Dual boiling Binary Geothermal Power Plant written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The design of a 5 MW(e) geothermal plant using a binary fluid process is described. The second fluid is isobutane. This plant is presently under construction at Raft River, Idaho. A mathematical simulation of the plant is discussed. The heat exchangers were modeled by dividing them into segments in the direction of flow to permit local adjustments in heat transfer coefficients and fluid properties. Sensitivity of plant performance to geofluid temperature and flow rate, heat exchanger fouling and cooling water temperatures were investigated. Conventional correlations were used for the heat transfer coefficients except for the condensing coefficient, which was obtained from a recent study at Lawrence Berkeley Laboratory.

Download or read book Design and Off design Operation of a Dual boiling Binary Geothermal Power Plant written by C. J. Bliem (Jr) and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geothermal Energy Update written by and published by . This book was released on 1976 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geothermal Energy written by United States. Dept. of Energy. Division of Geothermal Energy and published by . This book was released on 1973 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geothermal Power Plants written by Ronald DiPippo and published by Elsevier. This book was released on 2011-04-08 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ron DiPippo, Professor Emeritus at the University of Massachusetts Dartmouth, is a world-regarded geothermal expert. This single resource covers all aspects of the utilization of geothermal energy for power generation from fundamental scientific and engineering principles. The thermodynamic basis for the design of geothermal power plants is at the heart of the book and readers are clearly guided on the process of designing and analysing the key types of geothermal energy conversion systems. Its practical emphasis is enhanced by the use of case studies from real plants that increase the reader's understanding of geothermal energy conversion and provide a unique compilation of hard-to-obtain data and experience. An important new chapter covers Environmental Impact and Abatement Technologies, including gaseous and solid emissions; water, noise and thermal pollutions; land usage; disturbance of natural hydrothermal manifestations, habitats and vegetation; minimisation of CO2 emissions and environmental impact assessment.The book is illustrated with over 240 photographs and drawings. Nine chapters include practice problems, with solutions, which enable the book to be used as a course text. Also includes a definitive worldwide compilation of every geothermal power plant that has operated, unit by unit, plus a concise primer on the applicable thermodynamics.* Engineering principles are at the heart of the book, with complete coverage of the thermodynamic basis for the design of geothermal power systems* Practical applications are backed up by an extensive selection of case studies that show how geothermal energy conversion systems have been designed, applied and exploited in practice* World renowned geothermal expert DiPippo has including a new chapter on Environmental Impact and Abatement Technology in this new edition

Download or read book Inventory of Advanced Energy Technologies and Energy Conservation Research and Development 1976 1978 written by Oak Ridge National Laboratory and published by . This book was released on 1979 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synerjy written by and published by . This book was released on 1990 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1362 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Geothermal Program Review VII DOE Research and Development for the Geothermal Marketplace written by and published by . This book was released on 1989 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: