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Impact of Nonequilibrium Particle Temperature Considerations on Seeded Coal Combustion Plasma Properties

Description: This past quarter ending 12/30/91, the linear MHD channel simulation model has not only been completely specified but also fully modified to incorporate considerations for nonequilibrium particle temperatures. Testing of the modified model with the initial values from the first submodel (Richter's combustion zone model) and evaluation of the non-equilibrium particle temperature effect on the overall MHD performance is being held up. Reasons for the holdup is the lack of adequate response from D… more
Date: January 1, 1991
Creator: Oni, A. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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One-dimensional code to predict the thermal behavior of the UTSI MHD radiant furnace

Description: An analytical model of the thermal behavior of the radiant furnace components installed in the CFFF has been developed. Efforts have been primarily directed towards obtaining a representative global evaluation of the heat recovery of the major downstream components. An overall review of the heat transfer code developed specifically for the DOE CFFF downstream components is presented. The basic methods by which the gas state, transport properties, and the thermal radiative and convective propert… more
Date: March 1, 1984
Creator: Galanga, F.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MHD Coal-Fired Flow Facility. Quarterly technical progress report, January-March 1980

Description: The University of Tennessee Space Institute (UTSI) reports on significant activity, task status, planned research, testing, development, and conclusions for the Magnetohydrodynamics (MHD) Coal-Fired Flow Facility (CFFF) and the Research and Development Laboratory. Although slowed by incessant rain during several days, work on the CFFF Bid Packages progressed to nearly 100 percent completion, excluding later punchlist items. On the quench system, the cyclone separator was delivered to UTSI, and … more
Date: May 30, 1980
Creator: Altstatt, M. C. & Attig, R.C. Baucum, W.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Impact of Nonequilibrium Particle Temperature Considerations on Seeded Coal Combustion Plasma Properties

Description: The first of the three tasks of this research activity is to develop a model that represents steady, nonequilibrium energy interactions between post-combustion entrained particles and carrier gases, under typical coal-fired MHD operating conditions. The second task is to use the developed model to evaluate, for both the MHD linear channel and disk configurations. the impact of nonequilibrium particle temperatures on predicted gasdynamic and electrical property values that depend, at times criti… more
Date: January 1, 1992
Creator: Oni, A. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MHD Coal-Fired Flow Facility. Quarterly/annual technical progress report, October-December 1979

Description: In this Fourth Quarterly/Annual Report submitted under DOE contracts EX-76-C-01-1760 and DE-AC02-79ET10815, the University of Tennessee Space Institute (UTSI) reports on significant activity, task status, planned research, testing, and development, and conclusions for the Magnetohydrodynamics (MHD) Coal-Fired Flow Facility (CFFF) and the Research and Development Laboratory. Work on the CFFF progressed with only minor problems. Total construction activity for all site work presently awarded is n… more
Date: February 1, 1980
Creator: Dicks, J. B.; Chapman, J. N. & Crawford, L. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MHD power generation research, development and engineering. Quarterly progress report, October-December 1979

Description: Progress is reported on the following tasks: characterization of coal for open-cycle MHD power generation systems; compressive creep and strength studies of MHD preheater materials; preparation of coals for utilization in direct coal-fired MHD generation; characterization of volatile matter in coal; MHD materials evaluation; operability of the Moderate Temperature Slag Flow Facility; slag-seed equilibria and separations related to the MHD system; thermionic emission of coal and electrode materi… more
Date: January 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development, characterization and evaluation of materials for open-cycle MHD. Quarterly report for the period ending December 1980

Description: The development and fabrication is continuing on a graded composite electrode with a refractory HfO/sub 2/-Re/sub x/O/sub y/ surface and a HfO/sub 2/-RE/sub x/O/sub y/-In/sub 2/O/sub 3/ current leadout for testing. The electrical conductivity of some oxide current leadouts were measured, and some general conclusions made regarding effects of composition. Also measured was the electrical conductivity of some yttrium chromites doped with Mg and Ca. The characterization and evaluation of Pt-coated… more
Date: January 1, 1982
Creator: Bates, J.L. & Marchant, D.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characterization of Open-Cycle Coal-Fired MHD Generators. 16th Quarterly Technical Progress Report, December 16, 1980-March 31, 1981

Description: The successful design of full-scale, open-cycle, coal-fired MHD generators for baseload electrical production requires a detailed understanding of the plasma chemical and plasma dynamic characteristics of anticipated combustor and channel fluids. Progress in efforts to model the efficiency of an open-cycle, coal-fired MHD channel based on the characterization of the channel flow as well as laboratory experiments to validate the modeling effort is reported. In addition, studies related to unders… more
Date: May 1, 1981
Creator: Wormhoudt, J.; Yousefian, V.; Weinberg, M.; Kolb, C.; Martinez-Sanchez, M.; Cheng, W. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MHD Integrated Topping Cycle Project

Description: A summary of the work is excerpted here. Final design of an MHD channel for the ITC program POC test has been completed. The channel was designed to be capable of 1.5 MW {sub e} power output and a lifetime of 2000 hours. Emphasis was placed upon durability and reliability. Hence, specific measures were taken to design against channel damage due to electric faults. The life-limiting issues associated with electrochemical corrosion and erosion of gas-side surfaces were addressed by the use of var… more
Date: February 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Environmental readiness document magnetohydrodynamics

Description: The major areas of environmental concern with regard to the commercialization of coal-fired MHD generators are discussed. MHD technology and expectations about its future utilization are described. Information pertinent to the technology was drawn from the DOE technology program office and from an Environmental Development Plan developed for the technology by EV and the program office through an Environmental Coordination Committee. The environmental concerns associated with the technology are … more
Date: July 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cold flow modeling of pulverized coal combustors for magnetohydrodynamic channel applications

Description: This report describes an experimental program and techniques for studying the internal aerodynamics of pulverized coal combustors of the type used in magnetohydrodynamic test trains at The University of Tennessee Space Institute. The combustors are modeled with small scale, cold flow models that permit both flow visualization and velocity field surveys to be performed. Water was selected as the working fluid so that the model flow fields had the same Reynolds number as the actual reactive combu… more
Date: March 1, 1984
Creator: Schulz, R. J.; Giel, T. V.; Ghosh, A. & Morris, R. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MHD generator component development. Quarterly report, July 1983-September 1983

Description: The overall objectives of this program are two-fold: (1) To contribute, by appropriate systematic experimental and analytical investigations, to the engineering data base necessary for the design and construction of MHD generators at CDIF-scale (50 MW/sub th/) and baseload scale (2000 MW/sub th/). (2) To design and fabricate specific hardware items to be tested at the CDIF site in Butte, Montana. The program consists of a series of related tasks: (1) MHD channel design and performance; (2) MHD … more
Date: November 1, 1983
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characterization of Open-Cycle Coal-Fired MHD Generators. Quarterly Technical Summary Report No. 3, January 1--March 31, 1977. [Negative Ion Formation, Electron/Slag Interaction, and Alkali/Slag Interaction]

Description: The purpose of this contract effort is to understand how nonfuel components of coal will affect the electron and alkali seed chemistry in a high temperature coal combustion system like that envisioned for direct fired MHD generators. Three specific problems are being considered during this contract period. The first problem area is to characterize the formation of negative ions due to electron attachment processes in the combustion flow. While some stable negative ions may be formed from hydroc… more
Date: April 15, 1977
Creator: Kolb, C. E.; Yousefian, V.; Wormhoudt, J.; Martinez-Sanchez, M. & Kerrebrock, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Quarterly technical progress report, July-September 1982 on Energy Conversion Research and Development Programs

Description: Detail design work was resumed on the superheater. Satisfactory bids were received for the air heater and lowest price responsive bidder was chosen. The conduct of three tests in the LMF1C series is reported. The status of the environmental monitoring program is reviewed. Preliminary analyses of the test data from the three tests conducted during the quarter are included. The heat fluxes, combustor pressure and combustor efficiencies are reported. The performance of the nozzle, diagnostic (Hall… more
Date: December 1, 1983
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Magnetohydrodynamic projects at the CDIF

Description: This quarterly technical progress report presents the tasks accomplished at the Component Development and Integration Facility (CDIF) during the second quarter of FY91. Areas of technical progress this quarter included: coal system development; seed system development; test bay modification; channel power dissipation and distribution system development; oxygen system storage upgrade; iron-core magnet thermal protection system checkout; TRW slag rejector/CDIF slag removal project; stack gas/envi… more
Date: January 1, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MHD electrode development. Quarterly report, April-June 30, 1980

Description: Emphasis within this program is now being directed towards the engineering development of cold metallic electrodes, and in particular the identification and evaluation of alternatives to platinum for use as anodes. A literature search, concentrating on hot corrosion resistant alloys, has been undertaken and results are presented. In addition, results of platinum-copper diffusion studies and a preliminary evaluation of sputter coated specimens of TiB/sub 2/ clad copper are reported. Laboratory a… more
Date: August 1, 1980
Creator: Sadler, J W; Dietrick, D L & Frantti, E W
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Dispersion of seed vapor and gas ionization in an MHD second stage combustor and channel

Description: An approach is introduced for the simulation of a magnetohydrodynamic system consisting of a second stage combustor, a convergent nozzle, and a channel. The simulation uses an Argonne integral combustion flow computer code and another Argonne channel computer code to predict flow, thermal and electric properties in the seed particle laden reacting flow in the system. The combustion code is a general hydrodynamics computer code for two-phase, two-dimensional, turbulent, and reacting flows, based… more
Date: January 1, 1992
Creator: Chang, S.L.; Lottes, S.A. & Bouillard, J.X.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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MHD Integrated Topping Cycle Project

Description: The Magnetohydrodynamics (MHD) Integrated Topping Cycle (ITC) Project represents the culmination of the proof-of-concept (POC) development stage in the US Department of Energy (DOE) program to advance MHD technology to early commercial development stage utility power applications. The project is a joint effort, combining the skills of three topping cycle component developers: TRW, Avco/TDS, and Westinghouse. TRW, the prime contractor and system integrator, is responsible for the 50 thermal mega… more
Date: March 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MHD Integrated Topping Cycle Project

Description: This fourteenth quarterly technical progress report of the MHD Integrated Topping Cycle Project presents the accomplishments during the period November 1, 1990 to January 31, 1991. Testing of the High Pressure Cooling Subsystem electrical isolator was completed. The PEEK material successfully passed the high temperature, high pressure duration tests (50 hours). The Combustion Subsystem drawings were CADAM released. The procurement process is in progress. An equipment specification and RFP were … more
Date: February 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characterization of Open-Cycle Coal-Fired MHD Generators. Quarterly Technical Summary Report No. 2, October 1--December 31, 1976. [Negative Ion Formation, Electron/Slag Interaction, and Alkali/Slag Interaction]

Description: A study on how nonfuel components of coal will affect the electron and alkali seed chemistry in a high temperature coal combustion system like those envisioned for direct fired MHD generators is described. Three specific problems are being considered. The first problem area is to characterize the formation of negative ions due to electron attachment processes in the combustion flow. While some stable negative ions may be formed from hydrocarbon combustion species (OH, HCO/sup -//sub 3/), the bu… more
Date: January 15, 1977
Creator: Kolb, C. E.; Yousefian, V.; Wormhoudt, J.; Martinez-Sanchez, M. & Kerrebrock, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of technical feasibility of closed-cycle non-equilibrium MHD power generation with direct coal firing. Final report, Task 1

Description: Program accomplishments in a continuing effort to demonstrate the feasibility of direct coal fired, closed cycle, magnetohydrodynamic power generation are detailed. These accomplishments relate to all system aspects of a CCMHD power generation system including coal combustion, heat transfer to the MHD working fluid, MHD power generation, heat and cesium seed recovery and overall systems analysis. Direct coal firing of the combined cycle has been under laboratory development in the form of a hig… more
Date: November 1, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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