A+ regression binary interaction parameter?
Thread Content
RT. During regression, due to the lack of VLE experimental data, only the txy data at normal pressure (101.33 kPa) could be obtained. Can the parameters derived from this set of data be used for predicting the vapor-liquid equilibrium under reduced pressure (70 kPa) or increased pressure (2000 kPa)? Can, or cannot, or not sure? Please give your reason!
Extrapolation: no comparison, no conclusion.
Agree with what was said above. 1. It’s better to have it than not ； 2. Without comparison, there is no conclusion. Therefore, it is necessary to consult more literature or conduct two sets of low-pressure or high-pressure tests; by comparing the results, it will be possible to determine the extent of the deviation.
Thank you for your reply and good suggestions!
Reduced pressure (70 kPa) is acceptable, while increased pressure (2000 kPa) is not. With low pressure, the gas can be treated as an ideal gas for calculations. And at high pressures, it can no longer be treated as an ideal gas.