METHOD OF SETTING FIRE EXTINCTION DISCHARGE CONDITIONS FOR FIRE IN LARGE SPACE

摘要

PROBLEM TO BE SOLVED: To raise discharge accuracy and to reduce costs by determining an elevating angle of a deluge gun by gradually narrowing an elevating angle control range by a discharge curve at an elevating angle which equally divides an elevating angle range of discharge curves on both ends of an elevating angle control range in which a fire occurrence point exists. SOLUTION: The Z coordinate at a discharge reaching point Lm given by a discharge curve Cm obtained by an elevating angle at the middle point of an elevating angle movable range is calculated. When a fire occurrence point F exists onθ1 side of an elevating angle control range, the Z coordinate of a discharge reaching point Lm1 given from a discharge curve Cm1 obtained from an elevating angle of the middle point between the elevating angle at the middle of the elevating angle movable range giving the discharge reaching point Lm and the lower end of the elevating angle movable range is calculated. When the fire occurrence point F exists inθ4 , an elevating angle control rangeθ4 is divided into elevating angle control rangesθ5 andθ6 by the discharge curve Cm2 giving the discharge reaching point Lm2 obtained from the elevating angle which equally divides the elevating angle control rangeθ4 giving the discharge reaching points Lm and Lm1 and it is determined that the fire occurrence point F exists in whetherθ5 orθ6 .