The Nol 3 Mw 3-phase A-c Arc Heater (mark Ii).
Author | : R. E. Lee |
Publisher | : |
Total Pages | : 14 |
Release | : 1965 |
ISBN-10 | : OCLC:227338748 |
ISBN-13 | : |
Rating | : 4/5 (48 Downloads) |
Book excerpt: An a-c arc heater developed for the NOL 3 MW research arc is described. This heater has three doughnut-shaped electrodes with internal coils to increase the magnetic field strength. The operation and performance of this design are discussed. Temperatures from 3500 to 4000 K with efficiencies from 15 to 23% were obtained at pressures from 10 to 15 atmospheres. Multiple arc streamers and the diffusion of the arc into the center of the chamber were observed. A high level of contamination of the effluent gas, an unsatisfactory magnetic design, and short component life make the design unsatisfactory. Methods of eliminating these problems are discussed. (Author).