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http://dx.doi.org/10.7731/KIFSE.2019.33.3.051

A Study on Clean Agents for Halon Replacement in the Portable Extinguisher with CO2 as an Expellant Gas  

Jeong, Keesin (Dept. of Fire & Disaster Prevention, Semyung Univ.)
Publication Information
Fire Science and Engineering / v.33, no.3, 2019 , pp. 51-55 More about this Journal
Abstract
To prevent ozone depletion caused by CFCs, the replacement of Halon with clean agents has been developed in the fire protection field along with refrigerants, detergents, and foaming agents. The alternatives for Halon 1211 have been developed in the portable fire extinguisher area and HCFC-123 is used widely as a clean fire extinguishing agent. The type of expellant gas is important because their own vapor pressure is low. In this study, HCFC-123, HCFC-124, HFC-125, and Novec-1230 were selected as fire extinguishing agents and CO2, which is expected to improve the fire extinguishing ability, was chosen as the expellant gas. For each agent, experiments changing the agent and CO2 amount were carried out and HCFC-123 showed a good result, as expected. The extinguisher, HCFC-123 of 1.5 kg, showed the same ability to suppress a class A and B fire as the extinguisher, HCFC-123 of 2.5 kg, which is currently sold on the market. According to this result, the expellant gas has a subsidiary fire extinguish effect. This can reduce the amount of HCFC fire extinguishing agent, which is categorized in the phase-out alternatives, and is a more eco-friendly and economical fire extinguisher than the previous one. This study can also help solve the problems of CO2 fire extinguishers for class B and C fires, and can be used to extinguish electric and electron facilities fire, which contains large amounts of class A fire combustibles.
Keywords
Halon replacement clean agent; Expellent gas; HCFC-123; $CO_2$; Fire experiment;
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  • Reference
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