The characteristics of a high temperature plasma furnace for multi-purpose applications are studied. A gas tunnel type plasma jet, used for the plasma furnace, was generated using nitrogen working gas as wel as argon gas, and performance tests were carried out. The efficiency of the nitrogen plasma furnace was about 82% at P=20kW. The temperature in the nitrogen furnace was greater than 3500K at the furnace center at 40hPa The results of this plasma furnace were discussed compared with argon plsma furnace.
Transactions of JWRI 25 (1), 43-47, 1996-07