- Author
- Alger, R. S. | Alvares, N. J. | Lipska, A. E. | Inman, L. H.
- Title
- Destruction of High-Expansion Fire-Fighting Foam by the Components of Fuel Pyrolysis and Combustion. Part 2.
- Coporate
- Naval Ordnance Laboratory, Silver Spring, MD
- Sponsor
- Naval Ship Systems Command, Washington, DC
- Report
- NOLTR 72-93, April 1972, 63 p.
- Distribution
- Available from National Technical Information Service
- Keywords
- high expansion foams | pyrolysis products | fuel pyrolysis | fuel combustion | foam generation
- Identifiers
- smoke products; defoaming agents; effect of smoke on foam
- Abstract
- The object of this research was to develop and test methods which will allow high expansion foam production when the only air available to the foam generating nozzle is contaminated from a combustion environment. Many of the chamical products of combustion and pyrolysis which impede foam production were identified during the last year's experimental program. Chemical modification of the foam solution appeared to show promises as a remedial technique for frustration foam destruction by smoke. Also water spray scrubbing of the air prior to its entrance to the foam generator proved effective in removing chemical foam breaking agents. Howeverm only the scrubbing procedures would be of use in providing cooling to the combustion heated air. The operationa limits of both the chemical and scrubbing remedial techniques were investigated during the present research for the following changes in foam generation parameters and procedures. (1) The ambient temperature. (2) The smoke concentration. (3) Foam generation plenum pressure. (4) Percent of chemical foam stabilizing agent in foam solution. (5) The effect of all above parameters on foam formed with salt water.