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A platform for research: civil engineering, architecture and urbanism
Effect of Duct Fire on the Ventilation Air Velocity
In this Bureau of Mines report, a previously developed theory of reverse stratified flow in ventilated duct fires is applied to mine-related ventilation systems that use an exhaust fan to supply the forced airflows. The coupling between a fire and the ventilation airflow in a single-entry duct is analyzed to relate the air velocity in the absence of a fire to air velocity during a fire. By combining the derived coupling equations with the results of the previously developed theory of reverse stratified flow, it is possible to calculate critical flow velocities required to prevent reverse stratified flow in the event of a duct fire. The sample calculations shown agree with the few experimental results available from small-scale tunnel fires.
Effect of Duct Fire on the Ventilation Air Velocity
In this Bureau of Mines report, a previously developed theory of reverse stratified flow in ventilated duct fires is applied to mine-related ventilation systems that use an exhaust fan to supply the forced airflows. The coupling between a fire and the ventilation airflow in a single-entry duct is analyzed to relate the air velocity in the absence of a fire to air velocity during a fire. By combining the derived coupling equations with the results of the previously developed theory of reverse stratified flow, it is possible to calculate critical flow velocities required to prevent reverse stratified flow in the event of a duct fire. The sample calculations shown agree with the few experimental results available from small-scale tunnel fires.
Effect of Duct Fire on the Ventilation Air Velocity
C. C. Hwang (author) / R. F. Chaiken (author)
1978
25 pages
Report
No indication
English
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