PERFORMANCE ANALYSIS OF COAL-FIRED MHD FARADAY CHANNEL AT IEE, CHINA

摘要

A coal-fired MHD generator with 25 MW thermal input was designed and constructed at the Institute of Electrical Engineering (IEE), Chinese Academy of Sciences, in 1991. The present paper shows numerical analyses of the Chinese Faraday channel with a time-dependent 1-D gasdynamical model and 2-D electrodynamical model. The three key parameters of electrical behavior of the present MHD Faraday channel are evaluated with the analysis of the experimental data. The effective electrical conductivity is 5/9 of the theoretical value, the leakage resistance in the x-direction is 0.024 Ω between cathodes and the leakage resistance in the y-direction is 82.4 Ω, which can give close values of experimental results.