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자료유형
학술저널
저자정보
저널정보
대한설비공학회 International Journal of Air-Conditioning and Refrigeration Journal Of Air-Conditioning and Refrigeration Vol.8 No.2
발행연도
2000.11
수록면
80 - 88 (9page)

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Vapor-liquid equilibrium apparatus is designed and set up. The equilibrium data of two binary systems, HFC32/143a and HFC143a/134a, are measured. Fifteen equilibrium data for HFC32/143a and HFC143a/134a systems are measured over the temperature range 263.15~283.15K at 10K interval and the composition range 0.10~0.80, respectively.
And vapor-liquid equilibrium data are calculated using equation of state and correlation of activity coefficient and compared with the present data. Equation of state is CSD and RKS equations and correlation of activity coefficient is Margules' and Van Ness and Abbott's correlations.
Real behavior of HFC32/143a system has very large deviation from Raoult's rule which is ideal behavior. But real behavior of HFC143a/134a system is similar to ideal behavior.
The calculated data from CSD equation are compared with the data in the open literatures and the calculated data from REFPROP. Compared with REFPROP, the relative deviations of bubble point pressure for HFC32/143a system are within -2.16~-0.84% for CSD equation and within -0.20~1.10% for RKS equation. And the relative deviations of bubble point pressure for HFC143a/134a system are within -0.45~0.12% and -0.20~2.8% for CSD and RKS equations, respectively.

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Abstract

1. Introduction

2. Measurement of Vapor - liquid Equilibrium

3. Results And Discussion

4. Conclusions

Acknowledgment

References

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