- Author
-
Ingason, H.
- Title
- Fire Experiments in a Model Tunnel Using Pool Fires: Experimental Data.
- Coporate
- Swedish National Testing Institute, Boras, Sweden
- Report
-
SP Technical Notes 1995:52; BRANDFORSK Project 738-951,
1995,
49 p.
- Keywords
-
tunnels
|
experiments
|
pool fires
|
instruments
|
temperature
|
velocity
|
mass loss
|
heat release rate
|
optical density
|
ventilation
|
carbon dioxide
|
oxygen
|
oxygen concentration
|
xylene
- Identifiers
- description of the model tunnel; experimental data - free burning tests; experimental data model tunnel - natural ventilation; experimental data model tunnel - forced ventilation; experimental data model tunnel - O2 and CO2 concentrations at instrument station A; experimental data model tunnel - optical density at instrument station A; experimental data model tunnel - radiation at instrument station A
- Abstract
- Test data from fire experiments in a model tunnel using pool fires is presented. The data can be used for comparison with Computational Fluid Dynamics (CFD). The fuels used were heptane, methanol and xylene. The tunnel measured 1.2 m high, 1.08 m wide and 10.95 m long. The air supply to the fire source was established by both natural draft and forced ventilation. The air flow created by natural draft was varied by varying the size of an inlet opening at one end of the tunnel. The forced ventilation was accomplished by a fan. Air flows were varied from stoichiometric requirements to extremely air rich conditions with oxygen concentration an order of magnitude above the stoichiometric requirements. The experiments showed a significant difference in the mass burning rate and flame characteristics at air flows close to the stoichiometric requirements. No significant change in production of CO were observed in the tests. At air flows greater than about 2.5 times the stoichiometric requirements the mass burning rate was found to be similar range to that found in the liteature for model tunnel tests. There was a tendency for the mass burning rate to decrease with increasing wind velocity at the fire.