Effects of Ventilation on Heat Release Rate of Pool Fires in a Model Tunnel. BRANDFORSK Project 738-951: Fid-Bau Portal

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Effects of Ventilation on Heat Release Rate of Pool Fires in a Model Tunnel. BRANDFORSK Project 738-951

H. Ingason

The effects of ventilation on heat release rate of pool fires in a model tunnel were investigated. The fuels used were heptane, methanol and xylen. The air supply to the fire source was established by natural and force ventilation. The heat release rate is directly proportional to the mass burning rate. The experiments showed a significant difference in the mass burning rate and flame characteristics at air flows close to the stoichiometric requirements. The decrease of mass burning rate is attributed to effects of low oxygen concentration (vitiated air) in the immediate vicinity of the flames. Low oxygen concentration affects the soot formation in the flame and thus the flame radiation to the fuel surface. No significant change in production of CO were observed in the tests.

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Effects of Ventilation on Heat Release Rate of Pool Fires in a Model Tunnel. BRANDFORSK Project 738-951

H. Ingason

The effects of ventilation on heat release rate of pool fires in a model tunnel were investigated. The fuels used were heptane, methanol and xylen. The air supply to the fire source was established by natural and force ventilation. The heat release rate is directly proportional to the mass burning rate. The experiments showed a significant difference in the mass burning rate and flame characteristics at air flows close to the stoichiometric requirements. The decrease of mass burning rate is attributed to effects of low oxygen concentration (vitiated air) in the immediate vicinity of the flames. Low oxygen concentration affects the soot formation in the flame and thus the flame radiation to the fuel surface. No significant change in production of CO were observed in the tests.

Effects of Ventilation on Heat Release Rate of Pool Fires in a Model Tunnel. BRANDFORSK Project 738-951

H. Ingason

The effects of ventilation on heat release rate of pool fires in a model tunnel were investigated. The fuels used were heptane, methanol and xylen. The air supply to the fire source was established by natural and force ventilation. The heat release rate is directly proportional to the mass burning rate. The experiments showed a significant difference in the mass burning rate and flame characteristics at air flows close to the stoichiometric requirements. The decrease of mass burning rate is attributed to effects of low oxygen concentration (vitiated air) in the immediate vicinity of the flames. Low oxygen concentration affects the soot formation in the flame and thus the flame radiation to the fuel surface. No significant change in production of CO were observed in the tests.

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Titel:

Effects of Ventilation on Heat Release Rate of Pool Fires in a Model Tunnel. BRANDFORSK Project 738-951

Beteiligte:

H. Ingason (Autor:in)

Erscheinungsdatum:

1995

Format / Umfang:

23 pages

ISBN:

Medientyp:

Report

Format:

Keine Angabe

Sprache:

Englisch

Schlagwörter:

Transportation Safety , Road Transportation , Combustion & Ignition , Swimming pools , Fires , Ventilation , Tunnels , Models , Burning rate , Thermochemical properties , Fire tests , Fuel-air ratio , Oxygen , Foreign technology , Heat release rate , Air-to-fuel Stoichiometric fraction

Ähnliche Titel

Effects of ventilation on heat release rate of pool fires in a model tunnel. Brandforsk project 738-951.

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