- Author
-
Cashdollar, K. L.
|
Hertzberg, M.
- Title
- 20-1 Explosibility Test Chamber for Dusts and Gases.
- Coporate
- Bureau of Mines, Pittsburg, PA
- Journal
-
Review of Scientific Instruments,
Vol. 56,
No. 4,
596-602,
April 1985
- Keywords
-
test chambers
|
flammability limits
|
dust explosions
|
gas explosions
|
optical pyrometers
|
oxygen concentration
- Abstract
- The Bureau of Mines has designed a 20-1 test chamber for the explosibility testing of dusts, gases, and their mixtures. It can be used to measure lean and rich limits of flammability, explosion pressures and rates of pressure rise, minimum ignition energies, minimum oxygen concentrations for flammability, and amounts of inhibitor necessary to prevent explosions. The 20-1 chamber can be used at initial pressures that are below, at, or above atmospheric as long as the maximum explosion pressure is less than 21 bar, which is the rated pressure of the chamber. The chamber instrumentation includes a pressure transducer, optical dust probes, an oxygen sensor, and multichannel infrared pyrometers. Ignition sources used include electric sparks and electrically activated chemical ignitors. Examples of the various types of data that can be obtained for dusts and gases are shown.