2005 Volume 30 Issue 2 Pages 78-82
This paper describes the experimental investigation on the hypothetical dispersion and explosion of high-pressurized hydrogen gas which leaks through a nozzle of 10mm diameters with 40MPa pressure brown down to atmosphere. Since the distribution of dispersed hydrogen gas changes with time, concentration contours of every 1 second was measured by 15 sets of new device which consisted of 10 gas sensors. The explosion experiments were carried out with changing the time of ignition after the start of dispersion, and it was clarified that the explosion power depended not only on the concentration and volume of hydrogen/air pre-mixture, but also on the turbulence characteristics before ignition.
