Research on the Control of the Propagation of Hydrogen Combustion by Water Spray

Abstract

A series of experiments on the control and the prevention of the propagation of hydrogen combustion by water spray were carried out to decrease the damage caused by the combustion of hydrogen. The hydrogen-air mixture mainly 16% or 8% hydrogen concentration was supplied in an acrylic resin duct (150mmx150mmx750mm) and ignited. The average particle size of the sprayed water was 16μm and sprayed with a flow rate of 0,21/min. Inert gas was added in the duct to control the combustion if necessary. The pressure and temperature during the combustion in the duct were measured. The magnitude of the pressure change during the combustion decreased by using water spray. The propagation of combustion was prevented by using high density water spray and helium.