Thermophysical properties correlations and pseudocomponent characterization parameter estimation for fossil fluids
Abstract
This report summarizes work performed during the period September 1, 1984 through August 31, 1985. During this period, the companion correlations for dilute-gas viscosity and thermal conductivity have been developed. Both correlations are applicable to nonpolar, polar and associating fluids. The correlations require four characterization parameters as input, namely, critical temperature, critical volume, acentric factor, and dipole moment. One important feature of these correlations is that none of the characterization parameters has to be regressed from experimental viscosity or thermal conductivity data. This feature allows for apriori prediction of dilute gas viscosity and thermal conductivity. The correlation for dilute gas viscosity eta0 uses the Chapman-Enskog expression. The main departure from other earlier work on eta0 includes the use of the Stockmayer potential for polar and associating compounds. The dipole moment, along with molecular weight, critical temperature, critical volume and accentric factor, was found to be adequate in characterizing both polar and associating fluids studied in this work. A total of 757 data points were used covering 14 nonpolar, 11 polar, and 7 associative fluids. The overall deviation is 1.37%.
- Publication:
-
Annual Report
- Pub Date:
- 1985
- Bibcode:
- 1985uok..rept.....S
- Keywords:
-
- Characterization;
- Correlation;
- Fossil Fuels;
- Thermodynamic Properties;
- Acetone;
- Density (Mass/Volume);
- Dipole Moments;
- Distillation;
- Estimates;
- Forecasting;
- Independent Variables;
- Molecular Weight;
- Temperature Dependence;
- Vapors;
- Viscosity;
- Fluid Mechanics and Heat Transfer