| 摘要 |
PURPOSE: A railroad tunnel fire simulator using helium gas and a gas mixing method are provided to simulate the smoke of a tunnel fire very similar to the actual situation by using a mixed gas including air, helium, and oil. CONSTITUTION: A railroad tunnel fire simulator using helium gas comprises a tunnel model duct(110) and a mixed gas feed part(210). The tunnel model duct has a sealed chamber(112) and is equipped with a fire source(114). The mixed gas feed part comprises a chamber(220) for providing a mixed gas to the tunnel model duct, an air tank(230) for providing the air to the chamber, a helium tank(240) for providing helium to the chamber, and an oil tank(250) for providing oil to the chamber.
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