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Title: Development program for MHD direct coal fired power generation test facility. Annual technical progress report, January--December 1977

Technical Report ·
DOI:https://doi.org/10.2172/6266121· OSTI ID:6266121

Tests conducted in the existing MHD facility supported areas critical to the design of test components for the new intermediate-size, direct coal fired MHD development facility. Experimental results provided evidence as to what the flow train downstream of th generators and diffuser for the new facility should contain. SO/sub 2/ emissions at the exit of the MHD were reduced by about 80 to 85% as the amount of seed addition increased. Test results of NO/sub x/ measured at the cyclone separator exit indicate that NO/sub x/ levels can be reduced from 3,000 ppm to less than 50 ppm by properly controlling the oxygen-to-coal ratio. A vitiation heater and combustor combination was designed and constructed. The integrity of the water-cooled coal injector tube concept planned for the combustor proved to be sound. Two series of MHD generator experiments were carried out under direct coal-fired conditions. One series investigated the effect of multiple resistive loads and the other investigated the generator performance as a function of the type insulation used between electrodes. Development of the data acquisition system has produced a basic capability for on-line data acquisition, reduction, and display. Inverter development investigated noise modulation on the D.C. output from the MHD channel. The status of the design and construction of the new direct coal-fired prepilot size MHD development facility is reported. The materials program reports on insulator studies and chemical and fuel technology.

Research Organization:
Tennessee Univ., Tullahoma (USA). Space Inst.
DOE Contract Number:
EX-76-C-01-1760
OSTI ID:
6266121
Report Number(s):
FE-1760-31
Country of Publication:
United States
Language:
English