Correlation for saturated liquid densities of Hankinson and Thomson (COSTALD)
✍ Scribed by P. Maccone; J. Abusleme
- Publisher
- American Institute of Chemical Engineers
- Year
- 1992
- Tongue
- English
- Weight
- 181 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0001-1541
No coin nor oath required. For personal study only.
✦ Synopsis
Hankinson and Thomson (1979)
developed a correlation for saturated densities of liquids and their mixtures, which overcame mathematical discontinuity (Yen and Woods, 1966;Gunn and Yamada, 1971) and pure compound limiting problems (Spencer and Danner, 1972) in the equations used. In addition, the COSTALD correlation leads to an average absolute percent error in pure compounds and mixtures liquid densities lower than in the Yen-Woods and Spencer-Danner correlations. Moreover, COSTALD was later successfully extended to compressed liquids and liquid mixtures (Thomson et al., 1982). These features make it possible to label this correlation as highly predictive, accurate and reliable.
The aim of this work is to enhance the capability of prediction of this correlation by introducing the group-contribution approach in the single adjustable parameter v*, called the characteristic volume, required for each pure compound.
COSTALD Correlation
From Hankinson and Thomson (1979), we have the following pure compounds: