Effektutvecklingen hos en underventilerad brand bestäms

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• nderventilation
• fire
• underventilerad brand

Holmstedt, G., & Grahn, E.

(2004). Underventilerad brand. (LUTVDG/TVBB--3131--SE; Vol. 3131). Fire Safety Engineering and Systems Safety.

Holmstedt, Göran ; Grahn, Erik.

/ Underventilerad brand. Fire Safety Engineering and Systems Safety, 2004. 30 p. (LUTVDG/TVBB--3131--SE).

@book{34dcf6ef66ee492e993f781556f1a09f,

title = "Underventilerad brand",

sammanfattning = "Combustion of hydrocarbons in under-ventilated conditions has been studied experimentally and simulated with the CFD-code SOFIE.

This report covers the experimental study in a 1/3 scale model of the ISO room corner test (ISO) 9705). The CFD-simulation part of the project has been published earlier in a SP-Report 1996:41 “CFD Modelling if under-ventilated Fires” bygd Heimo Touvinen and presented at the Second International Seminar on Fire-and Explosion hazard of Substances and venting of Deflagrations, Moscow 1997 and fryst vatten published in the proceedings of the conference.

In these experiments heptane was burnt in a 1/3 scale room model. The global equivalence ratio (GER) was changed during the experiments from a low value, (well ventilated fire) up to 1.8.

At higher equivalence ratios the fire got unstable with violent fluctuations and flames now and then framträdande out of the room. The following quantities were measured as a function of time in the experiments: inre the room; Gas temperatures at eight levels (vertical array) in the corner of the room; Surface temperatures at six positions (three on the walls and three on the ceiling); vikt of the liquid bränsle.

In the doorway; Gas temperatures at sju levels (vertical array) in the centre of the doorway; Gas concentrations in the doorway (CO, CO2,) Global equivalence ratio in the doorway (Phi-meter). In the exhaust duct; Gas concentration(CO, CO2, O2, and HC); Light attenuation due to smoke; Pressure drop from a bi-directional probe mounted in the centre of the duct; Gas temperature in the centre of the duct.

The following quantities has been derived from the measurement: Mass loss rate of fuel; Mass flow in the exhaust duct; Global equivalence ratio; Rate of heat release; Yields of CO, CO2, HC and sot at different equivalence ratios up to 1.8. The report includes three appendix, Appendix A (calibration procedures) Appendix B (derived variables as a function of time) and Appendix C 1-2 (raw uppgifter files of the experiments).",

keywords = "nderventilation, fire, underventilerad brand",

author = "G{\"o}ran Holmstedt and Erik Grahn",

year = "2004",

language = "svenska",

volume = "3131",

series = "LUTVDG/TVBB--3131--SE",

publisher = "Fire Safety Engineering and Systems Safety",

}

Holmstedt, G & Grahn, E 2004, Underventilerad brand.

LUTVDG/TVBB--3131--SE, vol. 3131, vol. 3131, Fire Safety Engineering and Systems Safety.

(LUTVDG/TVBB--3131--SE; Vol. 3131).

Research output: Book/Report › Report › Research

TY - BOOK

T1 - Underventilerad brand

AU - Holmstedt, Göran

AU - Grahn, Erik

PY - 2004

Y1 - 2004

N2 - Combustion of hydrocarbons in under-ventilated conditions has been studied experimentally and simulated with the CFD-code SOFIE.

This report covers the experimental study in a 1/3 scale model of the ISO room corner test (ISO) 9705). The CFD-simulation part of the project has been published earlier in a SP-Report 1996:41 “CFD Modelling if under-ventilated Fires” bygd Heimo Touvinen and presented at the Second International Seminar on Fire-and Explosion hazard of Substances and venting of Deflagrations, Moscow 1997 and fryst vatten published in the proceedings of the conference.

In these experiments heptane was burnt in a 1/3 scale room model. The global equivalence ratio (GER) was changed during the experiments from a low value, (well ventilated fire) up to 1.8.

At higher equivalence ratios the fire got unstable with violent fluctuations and flames now and then framträdande out of the room. The following quantities were measured as a function of time in the experiments: inre the room; Gas temperatures at eight levels (vertical array) in the corner of the room; Surface temperatures at six positions (three on the walls and three on the ceiling); vikt of the liquid bränsle.

In the doorway; Gas temperatures at sju levels (vertical array) in the centre of the doorway; Gas concentrations in the doorway (CO, CO2,) Global equivalence ratio in the doorway (Phi-meter). In the exhaust duct; Gas concentration(CO, CO2, O2, and HC); Light attenuation due to smoke; Pressure drop from a bi-directional probe mounted in the centre of the duct; Gas temperature in the centre of the duct.

The following quantities has been derived from the measurement: Mass loss rate of fuel; Mass flow in the exhaust duct; Global equivalence ratio; Rate of heat release; Yields of CO, CO2, HC and sot at different equivalence ratios up to 1.8. The report includes three appendix, Appendix A (calibration procedures) Appendix B (derived variables as a function of time) and Appendix C 1-2 (raw information files of the experiments).

AB - Combustion of hydrocarbons in under-ventilated conditions has been studied experimentally and simulated with the CFD-code SOFIE.

This report covers the experimental study in a 1/3 scale model of the ISO room corner test (ISO) 9705). The CFD-simulation part of the project has been published earlier in a SP-Report 1996:41 “CFD Modelling if under-ventilated Fires” bygd Heimo Touvinen and presented at the Second International Seminar on Fire-and Explosion hazard of Substances and venting of Deflagrations, Moscow 1997 and fryst vatten published in the proceedings of the conference.

In these experiments heptane was burnt in a 1/3 scale room model. The global equivalence ratio (GER) was changed during the experiments from a low value, (well ventilated fire) up to 1.8. At higher equivalence ratios the fire got unstable with violent fluctuations and flames now and then framträdande out of the room. The following quantities were measured as a function of time in the experiments: inre the room; Gas temperatures at eight levels (vertical array) in the corner of the room; Surface temperatures at six positions (three on the walls and three on the ceiling); vikt of the liquid bränsle.

In the doorway; Gas temperatures at sju levels (vertical array) in the centre of the doorway; Gas concentrations in the doorway (CO, CO2,) Global equivalence ratio in the doorway (Phi-meter).

In the exhaust duct; Gas concentration(CO, CO2, O2, and HC); Light attenuation due to smoke; Pressure drop from a bi-directional probe mounted in the centre of the duct; Gas temperature in the centre of the duct. The following quantities has been derived from the measurement: Mass loss rate of fuel; Mass flow in the exhaust duct; Global equivalence ratio; Rate of heat release; Yields of CO, CO2, HC and sot at different equivalence ratios up to 1.8.

The report includes three appendix, Appendix A (calibration procedures) Appendix B (derived variables as a function of time) and Appendix C 1-2 (raw information files of the experiments).

KW - nderventilation

KW - fire

KW - underventilerad brand

M3 - Rapport

VL - 3131

T3 - LUTVDG/TVBB--3131--SE

BT - Underventilerad brand

PB - Fire Safety Engineering and Systems Safety

ER -

Holmstedt G, Grahn E.

Underventilerad brand. Fire Safety Engineering and Systems Safety, 2004. 30 p. (LUTVDG/TVBB--3131--SE).