Fire development in different scales of metro carriages

• A fire development analysis of three series of metro carriage fire tests in different scales was carried out. These metro carriages fire tests included 1:10 model scale tests, 1:3 model scale tests and 1:1 full scale tunnel tests. The heat release rate (HRR) correlations between different scales of carriage fire tests were carefully investigated. The mechanism of fire development is very similar in different scales of tests involving fully developed fires. After the critical fire spread, the fire travels along the carriage at an approximately constant speed. The maximum heat release rate obtained for a fully developed fire is dependent on the ventilation conditions and also the type and configuration of the fuels, and a simple equation has been proposed to estimate the maximum heat release rate. A global correction factor of the maximum heat release rate is presented and examined. 

Keyword

metro carriage fire; different scales; correlation; fire tests; fire development; local flashover; maximum heat release rate

Energy- and Environmental Engineering

energi- och miljöteknik

Publication and Content Type

ref (subject category)

kon (subject category)