- Author
-
Gruz, G.
|
Corlett, R. C.
- Title
- Enclosed Fire Smoke and Toxic Gas Studies. Comprehensive Progress Report.
- Coporate
- University of Washington, Seattle, WA
- Sponsor
- Naval Research Lab., Washington, DC
- Report
-
AD-785090,
August 7, 1974,
70 p.
- Keywords
-
smoke
|
shipboard fires
|
compartment fires
|
smoke opacity
|
toxic gases
- Abstract
- This report describes a two-year investigation of smoke and toxic gas production in enclosed fires, particulary as applied to shipboard conditions. Results set forth in the first annual report are expanded and revised. New results are also presented. Quantification of smoke and toxic gas production, as a function of enclosure parameters such as fuelbed length scale and ventilation magnitude and geometry, are emphasized. A correlation of obscuration, as indicated by smoke opacity, with the instantaneous exhaust stream equivalence ratio was attempted. The results suggest a significant smoke production dependence on enclosure parameters. An analogous carbon monoxide production dependence is observed. Other observations involve smoke particle size and enclosure mass throughput. Mean particle size is consistently observed to increase as the fires dies down. Upon ignition mass throughput usually decreases relative to non-burning conditions; however, in some cases of restricted ventilation settings, increases are observed.