MIST GENERATING DEVICE AND USE IN FIRE PROTECTION APPARATUS, SYSTEMS AND METHODS FOR ADDRESSING A FIRE WITH THE MIST

摘要

A mist generating device is disclosed comprising a first fluid passage (1080) a fluid inlet and an outlet (1084) disposed about a longitudinal axis and a second concentric fluid passage (1090) having a fluid inlet and an outlet (1094). The second fluid passage (1090) has an equivalent angle of expansion of between 1 and 40 degrees and includes a throat portion (1092) located between the inlet and the outlet (1094). The throat portion (1092) has a smaller cross sectional area than that of either the fluid inlet or fluid outlet (1094) and the area ratio between the throat portion (1092) and the fluid outlet (1094) is between 5:7 and 2:11. The ratio of the cross sectional area of the outlet (1084) of the first passage to the outlet of the second passage (1094) is between 10:3 and 1:12.