Download or read book MHD Generating System written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: According to the present invention, coal combustion gas is the primary working fluid and copper or a copper alloy is the electrodynamic fluid in the MHD generator, thereby eliminating the heat exchangers between the combustor and the liquid-metal MHD working fluids, allowing the use of a conventional coalfired steam bottoming plant, and making the plant simpler, more efficient and cheaper. In operation, the gas and liquid are combined in a mixer and the resulting two-phase mixture enters the MHD generator. The MHD generator acts as a turbine and electric generator in one unit wherein the gas expands, drives the liquid across the magnetic field and thus generates electrical power. The gas and liquid are separated, and the available energy in the gas is recovered before the gas is exhausted to the atmosphere. Where the combustion gas contains sulfur, oxygen is bubbled through a side loop to remove sulfur therefrom as a concentrated stream of sulfur dioxide. The combustor is operated substoichiometrically to control the oxide level in the copper.

Download or read book Open cycle Magnetohydrodynamic Electrical Power Generation written by and published by . This book was released on 1978 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book MHD generator component development written by Avco-Everett Research Laboratory and published by . This book was released on 1977 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objectives of this program are the design, fabrication and delivery of test channels (nozzle, channel, diffuser, instrumentation and controls, and all necessary facility service connections) to the CDIF (Component Development and Integration Facility) for MHD generator tests. These CDIF test channels will be driven by a coal combustor which is under development at PERC in parallel with this program. Progress is reported on the following tasks: (1) Conduct basic engineering tests and perform necessary analytical work to define preferred design configurations of the CDIF channel in relation to fluid dynamics and electrodynamic performance. (2) Conduct basic engineering tests and perform necessary analytical work to define preferred electrode module design, side wall construction, wall materials, and fabrication methods for a high performance, durable MHD channel. (3) Conduct basic engineering tests and perform necessary analytical work to define instrumentation and controls and preferred inverter systems and/or channel electrical controls in relation to inverter requirements and operating stability. (4) Determine basic performance capability of the disk generator design under conditions simulating an open cycle MHD plasma. (5) Maintain continuous design and engineering liaison with the Pittsburgh Energy Research Center (PERC) in the development of the two stage CDIF coal combustor. Ensure design compatibility of the integrated combustor-generator system. Design, build, and deliver to PERC an instrumented test section to assist in the design and performance evaluation of the PERC subscale 5 MWt experimental combustor. Obtain quantitative chemical and physical data on relevant coal slags with the PERC experimental combustor. (6) Conduct necessary bench tests to establish essential design information on fluid dynamic, heat transfer, and current transfer characteristics of selected MHD coal slags.

Download or read book High Pulsed Power Self Excited Magnetohydrodynamic Power Generation Systems written by B. Zauderer and published by . This book was released on 1985 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to examine the feasibility of achieving high power, high energy, repetitive pulses over a multi-second period, using a portable, self-excited, magnetohydrodynamic (MHD) generator system. To assure a compact, portable system, a room temperature MHD magnet, and operation without a supersonic diffuser was assumed. The approach selected was to use a cw, self-excited, MHD generator to provide the power for the magnetic field in a shaped explosive, argon plasma, MHD generator. The latter's output power pulses are converted in a pulse shaping network to the ultimate load. For the cw generator, a novel system consisting of a non-equilibrium MHD generator, with a noble gas working fluid, and heated directly with a high energy chemical fluid, was used. A novel, compact room temperature magnet was used with the cw MHD generator. This generator's system power output per unit volume and per unit total system weight is much higher than the values obtainable in high energy liquid or solid rocket fuel driven, combustion MHD generators. Among the barrier problems to the use of the shaped explosive, argon plasma MHD generator is survival of all the components for more that one pulse. It was found that the use of the novel cw MHD generator system directly with a pulsed forming network, and completely eliminating the explosive generator, resulted in a superior system performance compared to the best levels projected with advanced explosive and combustion MHD generators. Keywords: Explosive magneto hydrodynamics, Metal fuel combustion. (JHD).

Download or read book An Innovative Demonstration of High Power Density in a Compact MHD Generator written by H. J. Schmidt and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetohydrodynamic (MHD) energy conversion is a candidate technology for satisfying the pulse power requirements for advanced weapon and discrimination systems for the Strategic Defense Initiative. However, to be competitive with alternative pulse power concepts utilizing nuclear or stored energy schemes the characteristic power per unit weight and volume of the MHD system requires improvement in performance well beyond the levels demonstrated in the past. In this regard, there are two primary performance parameters of concern: the power density and the specific energy. The power density is the ratio of the electrical energy output to the internal volume of the generator channel. The MHD process is a volumetric process and the power density is therefore a direct measure of the compactness of the system. As such, it controls the size and weight of a MHD power generating system for a given power output. The greater the characteristic power density, the smaller and lighter the channel, magnet, combustor and flow train will be. The second parameter, the specific energy, is the ratio of the electrical energy output to consumable energy used for its production. In the case of a chemically driven MHD system, the specific energy is a direct measure of the conversion efficiency from the latent chemical energy to electrical energy. In pulse power MHD systems with short operating durations the specific energy is the controlling parameter for the weight and volume of the stored reactants used to power the system. The two parameters are conceptually interrelated, and for a given mission scenario maximization of both, in general, are required for optimization of the system. However, for short operating durations the power density is the dominant parameter; whereas, for long durations, the specific energy is the dominant parameter.

Download or read book Magnetohydrodynamic Electrical Power Generation written by Hugo K. Messerle and published by . This book was released on 1995-08-08 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetohydrodynamic Electrical Power Generation Hugo K. Messerle University of Sydney, Australia The global demand for energy continues to grow. Magnetohydrodynamic (MHD) conversion processes offer a highly efficient, clean and direct conversion of energy for power generation and propulsion. By converting the kinetic energy of a flowing fluid into electricity directly, MHD systems help address the problems of environmental pollution. At the same time MHD is particularly suitable for primary energy sources or fuels providing energy at temperatures extending far beyond those manageable by any conventional thermal conversion plant. It therefore offers a potentially more effective utilisation of fossil and nuclear fuels. The author covers all aspects of MHD power generation, including the design and operation of MHD conversion systems in practice. Features include: A comprehensive introduction to the principles behind the interaction of magnetic field and electric currents with electrically conducting fluids in the conversion of energy. Coverage of all aspects of generator configurations, as well as the disk generator, multi-phase converters, and propulsion systems. Study of the design for AC power generation, covering the control and power conditioning of the generator and the integration of such designs into existing power systems. Study of the use of MHD plant as part of a topping cycle combined with a steam and/or gas turbine or ternary cycle potentially leading to combined cycle efficiencies of up to 60%. Relevant worked examples in each chapter to assist the reader with self-study and the understanding of the topic. This text will appeal to advanced students in power engineering, physics and mechanics. Practising engineers and scientists is the field of power technology will find if an excellent practical reference and a basis for developing ideas on large scale MHD processes. Magnetohydrodynamic Electrical Power Generation forms a part of the Energy Engineering Learning Package. This innovative distance learning package has been established to train power engineers to meet today’s and tomorrow’s challenges in this exciting field. Organised by a team of distinguished, international academics, the modular course is aimed at advanced undergraduate and postgraduate students, as well as power engineers working in industry. World Solar Summit Process

Download or read book Development Program for MHD Direct Coal fired Power Generation Test Facility written by University of Tennessee (System). Space Institute. Energy Conversion Division and published by . This book was released on 1977 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Open Cycle Coal Burning MHD Power Generation written by Massachusetts Institute of Technology. MHD Power Generation Study Group and published by . This book was released on 1971 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Innovative Demonstration of High Power Density in a Compact Magnetohydrodynamic Generator written by H. J. Schmidt and published by . This book was released on 1990 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetohydrodynamic (MHD) energy conversion is a candidate technology for satisfying the pulse power requirements for advanced weapon and discrimination systems for the Strategic Defense Initiative. However, to be competitive with alternative pulse power concepts utilizing nuclear or stored energy schemes the characteristic power per unit weight and volume of the MHD system requires improvement in performance well beyond the levels demonstrated in the past. In this regard, there are two primary performance parameters of concern: the power density and the specific energy. The power density is the ratio of the electrical energy output to the internal volume of the generator channel. The MHD process is a volumetric process and the power density is therefore a direct measure of the compactness of the system. As such, it controls the size and weight of a MHD power generating system for a given power output. The greater the characteristic power density, the smaller and lighter the channel, magnet, combustor and flow train will be. The second parameter, the specific energy, is the ratio of the electrical energy output to consumable energy used for its production. In the case of a chemically driven MHD system, the specific energy is a direct measure of the conversion efficiency from the latent chemical energy to electrical energy. In pulse power MHD systems with short operating durations the specific energy is the controlling parameter for the weight and volume of the stored reactants used to power the system. The two parameters are conceptually interrelated, and for a given mission scenario maximization of both, in general, are required for optimization of the system. However, for short operating durations the power density is the dominant parameter; whereas, for long durations, the specific energy is the dominant parameter.

Download or read book The Liquid metal Closed cycle System of Magnetohydrodynamic Power Generation written by R. Y. Pei and published by . This book was released on 1978 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development Program for MHD Direct Coal fired Power Generation Test Facility written by University of Tennessee (System). Space Institute. Energy Conversion Division and published by . This book was released on 1976 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Liquid Metal Magnetohydrodynamics written by J.J. Lielpeteris and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid metal MHO is within the scope of two series of international conferences. One is the International Congress on "MHD Power Generation", held every four years, which includes technical and economical aspects as well as scientific questions. The other if the Beer-Sheva Seminar on "MHO Flows and Turbulence", held every three years in Israel. In addition to these well established meetings, an IUTAM Symposium was previously organized in Cambridge (UK) in 1982 on "Metallurgical Applications of MHD" by the late Arthur Shercliff. It was focussed on a very specific subject developing radiply from the middle of the 1970's. The magnetic field was generally AC, including frequencies high enough for the skin-depth to be much smaller than the typical length scale of the liquide pool. And the development of new technologies, or the improvement of existing ones, was the main justification of most of the researches presented and discussed. Only two participants from Eastern countries attended this Symposium. By the middle of the 1980's we felt that on this very same topic ideas had reached much more maturity than in 1982. We also realized that a line of research on MHD flows related to fusion reactors (tokamaks) was developing significantly, with particular emphasis on flows at large interaction parameter.

Download or read book The Noble gas Closed cycle System of Magnetohydrodynamic Power Generation written by R. Y. Pei and published by . This book was released on 1977 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book System Analysis of the Integration of a Segmented MHD Generator Into an AC Power Network written by Duong Tan Trung and published by . This book was released on 1981 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book MHD Power Generation Viking Series with Hydrocarbon Fuels Status Report of the Design Study Analysis and the Design of a 10 MW Compact MHD Generator System written by O. K. Sonju and published by . This book was released on 1974 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Second Interim Report - Part 2 presents the results of a design analysis and design of a very compact high performance, 10 MW MHD generator system. The basis for this work has been firmly established by past MHD research and development programs including the most recent MHD Research and Development work reported in this Second Interim Report - Part I. The system being designed has a target dry weight for the total system of 1800 to 2200 kg. The design analysis and a study of fabrication techniques have led to novel designs for the components of the 10 MW MHD generator system which are reviewed in detail in the report. (Author).

Download or read book High Power MHD System Facility Status and Magnet Test Results written by G. L. Whitehead and published by . This book was released on 1982 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: AEDC has been requested by the Aero Propulsion Laboratory to design, fabricate, and install facility hardware necessary to conduct tests to demonstrate the performance of high power MHD generator systems developed by AFWAL contractors. This report summarizes the AEDC effort since program inception, describes the facility under development, gives the status of each major facility component, and summarizes the results of the data acquired during magnet checkout tests. The report also describes the future effort required to make the facility a useful tool for MHD generator system and component development. (Author).

Download or read book A Pulsed Magnetohydrodynamic Generator with a Superconducting Magnetic System written by V. A. Kirillin and published by . This book was released on 1985 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: An urgent need for creating independent sources of electric power capable of generating a power of tens or hundreds of megawatts in a few milliseconds has now emerged. A pulsed MHD generator, in which the conversion of mechanical energy of explosion products into electrical energy is accomplished, can serve as such a power source. There are published reports on testing of such MHD generators with ordinary magnetic systems. It seemed advisable to study the operation of a pulsed generator with a superconductive magnetic system in the overall plan of research on the creation of magnetohydrodynamic generators. The creation of a pulsed MHD generator with a superconductive magnetic system would make it possible to improve substantially the operational indicators of the installation and to ensure its continuous operation, regardless of the presence of additional power sources for feeding the magnet. The problem of creating an optimum generator and a magnetic system with the maximum acceptable field intensity was not raised in the first stage. The purpose of the work was to investigate the set of questions which arise in the joint use of a pulsed MHD generator and a superconductive magnetic system. (Russian language, Translations, USSR).