MHD channel performance for potential early commercial MHD power plantsThe commercial viability of full and part load early commercial MHD power plants is examined. The load conditions comprise a mass flow of 472 kg/sec in the channel, Rosebud coal, 34% by volume oxygen in the oxidizer preheated to 922 K, and a one percent by mass seeding with K. The full load condition is discussed in terms of a combined cycle plant with optimized electrical output by the MHD channel. Various electrical load parameters, pressure ratios, and magnetic field profiles are considered for a baseload MHD generator, with a finding that a decelerating flow rate yields slightly higher electrical output than a constant flow rate. Nominal and part load conditions are explored, with a reduced gas mass flow rate and an enriched oxygen content. An enthalpy extraction of 24.6% and an isentropic efficiency of 74.2% is predicted for nominal operation of a 526 MWe MHD generator, with higher efficiencies for part load operation.
Document ID
19820037215
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Swallom, D. W. (Avco-Everett Research Laboratory, Inc. Everett, MA, United States)
Date Acquired
August 10, 2013
Publication Date
August 1, 1981
Subject Category
Plasma Physics
Meeting Information
Meeting: Intersociety Energy Conversion Engineering Conference