SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
New type of electricity generation. View of the main hall of the Y-25 magnetohydrodynamic (MHD) power station, near Moscow. A super-hot plasma, containing an electron-donating gas, is passed between the poles of a large magnet. The walls of the plasma channel act as electrodes, inducing a large direct current. This current is passed into an inverter to produce an alternating current. The hot plasma then passes through a heat exchanger, where it superheats steam. The steam is then passed through a turbine, generating more electricity. MHD power has been studied since 1960, and the Y-25 station is seen by Russia as the prototype of a 1000 million watt (1GW) plant.
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