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A Study on Discharge Characteristics from the Nozzle Orifice Attached to a Modularized Fire Extinguishing Gas-agent Container Under Horizontal Position  

김윤증 (서울시립대)
윤명오 (서울시립대)
김상욱 (화재공학연구원)
Publication Information
Fire Science and Engineering / v.16, no.2, 2002 , pp. 59-69 More about this Journal
Abstract
The conventional fire extinguishing gas-agent system has a configuration in which the gas-agent comes out of a cylindrical container having vertically settled shape. However, in this study a horizontally installed container of a piping shape having a cylinder of the same shape with a cylinder valve and a discharge nozzle was used, and the relationship between orifice size of nozzle and discharge rate of gas-agent was investigated through various experiments including the measurement of discharge rate under different ambient-temperature conditions. In such experiments, HCFC Blend A was used without super-pressurization by nitrogen. From this research, it was observed that statutory discharge duration of 10 seconds can be met if the relatively large size of the valve and the nozzle orifice were properly selected.
Keywords
HCFC Blend A; Fire extinguishing gas-agent; Dischargs duration;
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