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Measurement of Mutual Solubility of High-pressure Gaseous Fire Extinguishing Agents(HFCs) and Nitrogen  

임종성 (한국과학기술연구원 환경공정연구부 CFC 대체연구센터)
박지영 (한국과학기술연구원 환경공정연구부 CFC 대체연구센터)
이병권 (한국과학기술연구원 환경공정연구부 CFC 대체연구센터)
김재덕 (한국과학기술연구원 환경공정연구부 CFC 대체연구센터)
이윤용 (한국과학기술연구원 환경공정연구부 CFC 대체연구센터)
Publication Information
Fire Science and Engineering / v.16, no.3, 2002 , pp. 26-31 More about this Journal
Abstract
Bromotrifluoromethane(halon-1301) and bromochlorodifluoromethane(halon-1211) have been widely used as a clean fire extinguishing agents due to their outstanding properties. However, production and use of halon are currently being phased out under an international agreements Montreal Protocol because of global environmental concerns and HFCs have been considered as promising alter-natives for the replacement of halon since their ozone depletion potentials are low. The vapor-liquid equilibrium data are required as important basic information in evaluating the solubility of clean fire extinguishing agents and determining their optimal compositions. In this work, we chose HFCs such as HFC-22 HFC-125, and HFC-l34a for gaseous fire extinguishing agents and nitrogen as a pressurization gas for a proper jet velocity of these agents. Phase equilibria for binary mixtures of nitrogen/HFC-22, nitrogen/HFC-125, and nitrogen/HFC-l34a were measured in the temperature range from 283.15K to 303.15K. For equilibrium measurement, we used a circulation type apparatus in which both vapor and liquid phases were continuously recirculated. The experimental data were relatively well correlated with the Peng-Robinson equation of state with Wong-Sandier mixing rules.
Keywords
Fire Extinguishing Agents; HFC-22; HFC-125; HFC-l34a; Nitrogen; Solubility;
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