| Title |
Measurement of Viscosity for CO2 Mixture Under Supercritical Condition |
| Authors |
Kyeong Hee Hong ; Rin Yun |
| DOI |
https://doi.org/10.6110/KJACR.2022.34.6.281 |
| Keywords |
이산화탄소 포집 저장기술; 이산화탄소 수송; 불순물; 메탄; 질소; 점성 Carbon capture & storage; CO2 transportation; Impurities; Methane; Nitrogen; Viscosity |
| Abstract |
The purpose of this study was to experimentally investigate the viscosity for carbon dioxide with nitrogen and methane impurities under supercritical conditions. The experimental setup was comprised of a test section, a condensation section for the liquefaction of carbon dioxide before entering the pump, and a heating section for controlling the temperature of the entrance of the test section. The test section was comprised of a capillary tube with a length of 300 mm and a ⅛ inch diameter. The experiment was performed under a mass flux of 200~400 kg/(m2s) at a impurities concentration of 1.0~5.0 mol%. The viscosity of nitrogen mixture was lower by 0.5% for 1% mole fraction, 4.9% for 3% mole fraction, and 23.5% for 5% mole fraction compared with that of pure CO2. The viscosity of methane mixture was lower by 7.3% for 1% mole fraction, 11.2% for 3% mole fraction, and 24.4% for 5% mole fraction compared with that of pure CO2. A model for predicting the viscosity of CO2 mixtures under the supercritical condition was developed by the multi-variable regression analysis. The model included the non-dimensional parameters for temperature, pressure, and density. |