유통형인 고압기액평형측정 장치를 사용하여 고밀도상태의 이산화탄소와 윤활유분의 상호 용해도를 298.15K, 308.15K, 328.15 K와 343.15 K의 온도와 2 MPa에서 20 MPa 사이의 압력범위에서 측정하였다. 윤활유분을 순수한 단일성분으로 가정하고 평균분자량, 임계특성값을 Kesler-Lee의 상관관계식에 의하여 추정하고 상태방정식에 의한 기-액양상 중의 이산화탄소와 윤활유분의 상호용해도를 계산하여 계산값과 측정값을 비교하였으며 작은 편차로 잘 일치하였다.
The mutual solubility of carbon dioxide and lubricating oil was measured at the temperatures 298.15 K, 308.15 K, 328.15 K, 343.15 K and the pressure range between 2 MPa and 20 MPa, by using the flow-type apparatus for high pressure gas-liquid equilibrium. Supposing the lube oil fraction as a pure psudocomponent, the average molecular weight, critical properties and acentric factor were estimated by Kesler-Lee correlation. The solubilities of carbon dioxide in liquid phase and lube oil in gas phase were predicted by using an equation of state. The average absolute deviations between observed and calculated concentration of each phase were not great.