- Author
-
Watanabe, Y.
|
Matushima, S.
|
Yamada, T.
- Title
- Prediction of Smoke Layer in a Fire Compartment Having a Smoke Shaft.
- Coporate
- Fire Research Institute, Tokyo, Japan
- Journal
-
Bulletin of Japanese Association of Fire Science and Engineering, Vol. 43, No. 1-2, 21-29, 1995 <b>AND</b> Report of National Research Institute of Fire and Disaster, No. 81, 102-110, March 1996,
- Keywords
-
smoke layers
|
compartment fires
|
stack effect
|
experiments
|
scale models
|
zone models
- Abstract
- [ONLY ABSTRACT IN ENGLISH] In order to evaluate the stack effect of the smoke shaft installed in a fire compartment, a series of experiments was conducted with a reduced scale model. Flow rate of exhaust gas through the shaft and smoke height in the compartment were measured. And these experimental data were compared with the predictions based on two layer zone model. As a result, it was found that a certain adjusting parameter was required for prediction of smoke exhaust flow rate in order to predict experimental results with good accuracy. Because the smoke shaft exhausts fresh air of lower zone as well as smoke of upper layer, when the smoke layer thickness under the inlet of the shaft becomes thin.