Abstract
This study focused on the fire-extinguishing performance of inert gas in main distribution board room using fire dynamics simulator. The study included 4 types of inert gas: Nitrogen, Argon, Argonite and Inergen. The simulation was done in a 1 meters wide x 2.1 meters height x 1 meters deep main distribution board. In simulation, according to each type of inert gas, 3405.0 kW/m2 heat release rate of electrical wires with ramp-up time at 492.0 second using concentration of inert gases based on NFPA 2001 standard. With initial concentration of Nitrogen at 41.9%, Argon 52.9%, Argonite 42.7% and Inergen 38.5% and also simulated the incidents when increased safety factor of Class C fire to 50% and 100% respectively in all 4 experimental gases which divided into 12 cases.The results showed that different types of inert gases did not affect the fire-extinguishing performance caused by the same fuel in the same environment. And the increasing of safety factor of Class C fire by 50% and 100% respectively in all 4 types of inert gas did not improve their fire-extinguishing performance.
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