Glow discharge heating apparatus

Details Glow discharge heating apparatus Glow discharge heating apparatus

1979-01-26

1982-05-11

Reynolds, B. A.

Electric heating

Metal heating

By arc

219121PR, 219121PN, 313210, 422907, H05B 716

Patent

active

043295630

ABSTRACT:
Typically, a bottom of a cup-shaped electrode opposes to that of a similar electrode through a predetermined gap and in a mixture of helium and hydrogen. A step-up transformer connected across an AC source through a resistor applies a voltage in excess of a discharge breakdown voltage for the gap across the electrodes to cause a pilot glow discharge between them before the source voltage reaches a glow hold minimum voltage for the electrodes. A rectified voltage resulting from a transformer connected across the resistor turns a bidirectional triode thyristor on to apply the source voltage across the electrodes through the conducting thyristor. This smoothly transits the pilot glow discharge to a glow discharge between the electrodes. The latter discharge heats a liquid forcedly flowing along inner surfaces of the electrodes. Also an auxiliary electrode can be operatively coupled to the electrodes to cause similarly a pilot glow discharge between it and either one of the electrodes. For a DC source a tubular anode surrounds a middle portion of a tubular cathode through which a liquid flows.

REFERENCES:
IBM, "In Situ Thermal Control/Monitor System . . . ", vol. 20, No. 3, 8/1977.
FAM-4175 article, Komura et al., 4-1979, pp. 5-1.

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