Fire Science and Engineering (한국화재소방학회논문지)

Korean Institute of Fire Science and Engineering (한국화재소방학회)
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Thermodynamic Empirical Equations for Physical Properties of Inert Gas Mixtures

불활성 기체 혼합물의 물성에 관한 열역학적 실험식

  • 김재덕 (한국과학기술연구원, 국가지정 초임계유체연구실) ;
  • 여미순 (초정밀분리기술센터, 인하대학교, 화학공학과) ;
  • 이윤우 (한국과학기술연구원, 국가지정 초임계유체연구실) ;
  • 노경호 (초정밀분리기술센터, 인하대학교, 화학공학과)
  • Published : 2003.06.01
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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. %).

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.

Keywords

References

  1. N. Saito, Y. Ogawa, Y. Saso, C. Liao and R. Sakei, 'Flame-extinguishing Concentrations and Peak Concentrations of $N_2$, Ar, $CO_2$ and their Mixtures for Hydrocarbon Fuels', Fire Safety Journal, 27, 185-200(1996) https://doi.org/10.1016/S0379-7112(96)00060-4
  2. United Nation Environmental Program (UNEP). 'Montreal Protocol on Substances That Deplete The Ozone Layer. (1987)
  3. K. H. Row, M. S. Song, S. G. Han, J. D. Kim, and Y. W. Lee, 'Empirical Equations For Physical Properties of Halon-1305 and $CO_2$', T. of Korean Institute of Fire Sci. & Eng., Vol. 16, No.2, pp.51-58(2002)
  4. Y. Zou, N. Vahdat and M. Collins, 'Fire extinguishing ability of 1-bromo-1-propane and 1-methoxynonafluorbutane Evaluated by Cup Burner Method', Journal of Fluorine Chemistry, 111, 33-40(2001) https://doi.org/10.1016/S0022-1139(01)00439-0
  5. J. M. Prausnitz, R. N. Lichtenthaler and E. G. de Azevedo, 'Molecuar Thermodynamics of Fluid phase Equilibria', 2nd Ed., Prentice-Hall PTR, Inc. (1986)
  6. J. M. Smith, H. C. Van Nes and M. M. Abbott, 'Introduction to Chemical Engineering Thermodynamics', 5th Ed., McGraw-Hill(1997)
  7. C. T. Lira and J. R. Elliott, 'Inrtoductory Chemical Engineering Thermodynamics', 1st Ed., Prentice-Hall PTR, Inc.(1999)
  8. W. L. McCabe, J. C. Smith and P. HarriottUnit, 'Operations of Chemical Engineering', 5th Ed., McGraw-Hill(1993)
  9. B. E. Poling, J. M. Prausnitz and J. P. O'Connell, 'The Properties of Gases and Liquids', 5th Ed., McGraw-Hill(2000)
  10. K. H. Row, 'Excel for Chemical Engineering', A-Jin press(2001)
  11. M. Huber, J. Gallagher, M. O. McLinden and G. Morrison, Thermodynamic Properties of Refrigerants and Refrigerant Mixtures Database, REFPROP V. 6.01, National Institute of Standards and Technology, Boulder, CO(1996)