Coal-Fired MHD Combustor Development Project. Phase III D. Eighth Quarterly Technical Progress Report, 1 February-30 April 1986

摘要

The present seed injection method impacts the gas conductivity/power achieved by the CFC power train in two ways: (1) the gas conductivity in the front end of the channel is lower than predictions because much of the seed which impacts with the wall of the CFC is not re-released into the gas stream until well within the channel; (2) the power achieved by the CFC power train is lower than predictions because of excessive shorting of the electrodes along the cathode wall providing a large current leakage path through the slag layer. The type and/or quantity of seed materials present in the slag layer on the walls of the channel may play an as yet undefined role in the propensity for cathode wall shorting. The power train interaction test series currently being conducted at the CDIF was formulated to investigate the impact of seed injection variables on plasma conductivity and power. Specifically the impact of seed particle size, seed flow stability, seed injection velocity and seed injection location will be investigated. In addition, this test program will emphasize the attainment of steady-state conductivity and power test data for performance verification. (ERA citation 11:056301)