- Author
-
Inoue, Y.
|
Saito, N.
|
Saso, Y.
|
Ogawa, Y.
- Title
- Evaluation of Fire Suppression Efficiency and Practical Applicability of Halon Replacements.
- Coporate
- Koatsu Co., Ltd., Japan
- Journal
-
Report of Fire Research Institute of Japan,
No. 79,
1-7,
1995
- Keywords
-
halon alternatives
|
evaluation
|
fire suppression
|
halons
|
halon 1301
- Abstract
- [ABSTRACT IN ENGLISH] The flame extinguishing concentrations of three halon replacements were measured using a cup burner system. Fuels are n-heptane, ethyl alcohol and toluene. The concentrations obtained agree well with averages of the literature data. The order of fire suppression efficiency based on the flame extinguishing concentration among the agents is FC-3-1-10 > HFC-227ea > HFC-23 for all of fuels used here. However, the order of the efficiency based on the wieght of agent required per unit volume of a fire protecting area, HFC-23 > HFC-227ea > FC-3-1-10, is completely inverse of the order of the efficiency measured by the fire extinguishing concentrations for a total flooding system. Ratios of weight requirement of the three agents to halon 1301 for extinguishing ethyl alcohol fires are larger than the ratios on the case of extinction of n-heptane fire. This reason is that the design concentrations for heptane and ethyl alcohol are both 5% of the minimum design concentration in the case of halon 1301, while the design concentrations for the halon replacements are 1.2 times of their flame extinguishing concentrations.