| 학회 |
한국화학공학회 |
| 학술대회 |
2009년 봄 (04/23 ~ 04/24, 광주 김대중컨벤션센터) |
| 권호 |
15권 1호, p.711 |
| 발표분야 |
열역학 |
| 제목 |
Group Contribution Lattice Fluid Equation of State and the Application to High Pressure Phase Equilibria |
| 초록 |
The recently proposed multi-fluid nonrandom lattice fluid (MF-NLF) model was used to purpose a method for estimating the equation of state (EOS) parameters using a group contribution (GC) scheme. The group parameters consist of close packed volume and segment number parameters and temperature depended energy interaction parameters. For reliably reproduce equilibrium data near the critical region a new contribution based of Veytsman statistics was introduced into the EOS framework to account for long range density fluctuations, which are know to induce molecular clustering near the critical region. The probability of clustering is modified to be dominant in the critical region. The combination of the GC parameter estimation method and the modified Veytsman contribution were evaluated for various pure and binary equilibrium systems over a wide temperature and pressure range. The results show a remarkable agreement with the presented experimental data, even in temperature and pressure regions near the critical point. |
| 저자 |
알렉산더1, 강정원2, 유기풍1
|
| 소속 |
1서강대, 2고려대 |
| 키워드 |
lattice fluid; equation of state; group contribution; high pressure
|
| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
