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Fire Science and Engineering 2003;17(2):43-49.
Published online June 30, 2003.
불활성 기체 혼합물의 물성에 관한 열역학적 실험식
김재덕여미순이윤우노경호
1한국과학기술연구원, 국가지정 초임계유체연구실2초정밀분리기술센터, 인하대학교, 화학공학과3한국과학기술연구원, 국가지정 초임계유체연구실4초정밀분리기술센터, 인하대학교, 화학공학과
Thermodynamic Empirical Equations for Physical Properties of Inert Gas Mixtures
요약
대체 소화제로 사용되는 불활성 기체 중 Ar, $N_2$, $CO_2$에 대한 혼합물에서의 물성(포화압력, 밀도, 점도)에 관한 실험식을 구하였다. Mixing rule에 의해 계산한 값을 이용하여 다항식 등의 회귀분석에 의해서 실험식을 얻었다. 포화압력은 온도에 대하여 1차 실험식으로 표시하였다. 압축인자와 포화압력을 이용하여 온도에 대한 밀도에 관한 실험식을 제시하였다. 점도는 온도에 대한 지수함수로 표시하였다. Ar, $N_2$, $CO_2$혼합물의 조성이 40/50/10(mol. %)에서 열역학적 실험식을 구하였다.
Abstract
For the inert gases of Ar, $N_2$and $CO_2$, the empirical equations of the gas mixture were correlated in terms of saturated pressure, density and viscosity. They were obtained by regression analysis based on the mixing rule. The empirical equation of saturated pressure was assumed as the first order function of temperature. The empirical form of density was expressed as compressibility factor and saturated pressure while the empirical equation of viscosity was formulated as a power function of temperature. This empirical equations of the physical properties were obtained in the composition of Ar, $N_2$and $CO_2$, 40/50/10(mol. %).
Key Words: Inert gas mixtures, Saturated pressure, Density, Viscosity


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