الفهرس 
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Abstract
The present study is an experimental and theoretical investigation of the thermal and environmental behavior in an industrial building exposed to fire. The experimental model designed and constructed for this study represents a1/10 scale of a typical industrial building. The model has a triangle polygon ceiling. And a rectangular base of dimensions of 3.0 m x 1.00 m with a height of 1m. The material used in the model is gypsum board. The model of industrial building has one vent (opening door) with dimension (0.3 m x 0.25 m). The heat release is obtained from a circular burner of 0.11 m diameter that used LPG fuel giving a constant heat rate of 2.45 kW throughout the study. Temperature distribution both vertically and horizontally using bare wire. Transient measurements were obtained for the thermocouple with the change position of thermocouple across the ceiling.
The steady state behavior of CO2 and O2 were also monitored at different vertical locations along the model. Parameters varied include burner location and the ceiling state i.e. whether it is a triangle polygon ceiling.
Measurements showed that the thermal state inside the industrial building reached a steady state after an interval of time that varied between 11 to 14 minutes for a triangle ceiling. However, much shorter times are required to state is defined as the time from ignition after which no change with time is monitored in the distribution of temperature, Carbon dioxide and oxygen inside the industrial building. This is attributed to the effect of thermal inertia of walls for the model.
Furthermore, measurements are taken to the amount of fresh air rained into the industrial building via door vent.
The results show that the smoke stratifies in the higher layer of the industrial building and temperature decreases as the distances from the source increase. Generally, the overall temperature level in the industrial building was found high in the case where the burner is located at the center of the industrial building, higher in the case where the burner is next to one of the walls, and highest in the corner- burner case. As expected, the qualitative trend of the CO2 and O2 measurements followed that of the temperature measurements.
Also, Transient measurements were obtained for the temperature distribution for the point in the industrial building which has the same axial location (r/H) for thr three cases of the source (corner, side wall and center).
The experimental results were used to validate a mathematical model that is developed to simulate fire scenarios. The results of transient development were obtained for a triangle ceiling in the case of corner burner, side wall and center at different levels. Comparison between theoretical and experimental results showed satisfactory agreement.