Characterization of open-cycle coal-fired MHD generators. Quarterly technical summary report No. 6, October 1--December 31, 1977. [PACKAGE code] Page: 4 of 210
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This sixth quarterly technical summary report documents the conclusion of the
initial phase of Aerodyne Research, Inc. 's research program on the "Characterization
of Open-Cycle, Coal-Fired MHD Generators".
This effort has included theoretical modeling of important plasma chemical
effects such as: conductivity reductions due to condensed slag/electron interactions;
conductivity and generator efficiency reductions due to the formation of slag-related
negative ion species; and the loss of alkali seed due to chemical combination with
A summary of the major conclusions in each of these areas is presented in
this report, along with references to more detailed presentations.
A major output of our modeling effort has been the development of an MHD
plasma chemistry core flow model. This model has been formulated into a
computer program designated the PACKAGE code (Plasma Analysis, Chemical
Kinetics, And Generator Efficiency). The PACKAGE code is designed to calculate
the effect of coal rank, ash percentage, ash composition, air preheat temperatures,
equivalence ratio, and various generator channel parameters on the overall
efficiency of open-cycle, coal-fired MHD generators. A complete description of
the PACKAGE code and a preliminary version of the PACKAGE user's manual are
included in this report.
A laboratory measurements program involving direct, mass spectrometric
sampling of the positive and negative ions formed in a one atmosphere coal combustion
plasma was also completed during the contract's initial phase. This report summarizes
the relative ion concentrations formed in a plasma due to the methane augmented
combustion of pulverized Montana Rosebud coal with potassium carbonate seed and
preheated air. Positive ions measured include K+, KO+, Na+, Rb+, Cs , and CsO+
while negative ions identified include PO3, PO, BO 2, OH , SH , and probably HCrO3,
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Kolb, C.E.; Yousefian, V.; Wormhoudt, J.; Haimes, R.; Martinez-Sanchez, M. & Kerrebrock, J.L. Characterization of open-cycle coal-fired MHD generators. Quarterly technical summary report No. 6, October 1--December 31, 1977. [PACKAGE code], report, January 30, 1978; United States. (https://digital.library.unt.edu/ark:/67531/metadc1207188/m1/4/: accessed April 23, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.