Citation

Santo G, Delichatsios MA. Fire Safety J. 1984; 7(2): 159-164.

Copyright

(Copyright © 1984, Elsevier Publishing)

DOI

unavailable

PMID

unavailable

Abstract

The effects of vitiated supply air on the heat release rate, products yield and radiation in turbulent pool fires were measured in an enclosure under well controlled conditions. A propane sintered-metal gas burner, 380 mm in diameter, produced the pool fire. Vitiation of the supply air was implemented by diluting with ambient air the exhaust gases from one or two propane furnaces. Direct measurements of the rates of production of major species as well as flame radiation were made as a function of height from the pool surface through a technique reported [1] previously. The total heat release rate for the propane pool fire varied in the present experiments from 30 kW to 50 kW and the vitiation of the supply air expressed in terms of oxygen concentration from 17.5% (by volume) to ambient air conditions. The collection hood significantly influenced the fire when it was near the pool base. However, at greater separations the data is independent of the apparatus and shows that vitiation significantly reduces the radiative fraction of the heat release but does not significantly affect the overall chemical heat release or CO production rate.