Yıl 2018, Cilt 21, Sayı 3, Sayfalar 158 - 172 2018-09-01

Wagner Equation Predicting Entire Curve for Pure Fluids from Limited VLE Data: Critical and Normal Boiling Points & Acentric Factor

Todd Nichols [1] , Vivek Utgikar [2]

22 35

Wagner constants are estimated from VLE predictions based solely on the critical and normal boiling points, and acentric factor.  The predictions come from the standard forms of 1) Riedel and 2) Ambrose-Walton, 3) a modified Riedel equation resulting from forcing the value of K to provide zero error at the reduced temperature of 0.7, and 4) a modified Ambrose-Walton equation resulting from using a pseudo acentric factor that provides zero error at the normal boiling point.  Reduced vapor pressure values obtained using these Wagner constants are compared to those generated by using literature-reported Wagner constants that are applicable for the entire two-phase VLE curve for 72 species. It is shown that the Wagner equation parameterized using VLE predictions from such correlations can provide better accuracy than the underlying source correlations themselves, and it can exhibit less error than a parameterization using a limited interval of experimental data.

Vapor-liquid equilibrium, Wagner equation, Riedel equation, Ambrose-Walton equation
  • Dr. Ahmed Bellagi, U. R. Thermique et Thermodynamique des Procedes Industriels, Ecole Nationale d'ingenieurs de Monastir (E.N.I.M.), Avenue Ibn El Jazzar, 5060 Monastir, Tunisia, E-mail address: a.bellagi@enim.rnu.tn
  • Dr. Joachim Gross, Institute of Thermodynamics and Thermal Process Engineering, University of Stuttgart, Pfaffenwaldring 9, D-70569 Stuttgart, Germany, E-mail: gross@itt.uni-stuttgart.de
  • Dr. Santiago Velasco, Departamento de Fisica Aplicada, Universidad de Salamanca, E-37008 Salamanca, Spain, E-mail: santi@usal.es
  • Dr. Ehsan Sanjari, Department of Mechanics, Tiran Branch, Islamic Azad University, Isfahan, Iran, E-mail: sanjary@gmail.com
Birincil Dil en
Konular Mühendislik
Dergi Bölümü Regular Original Research Article
Yazarlar

Orcid: 0000-0002-1808-1916
Yazar: Todd Nichols (Sorumlu Yazar)
Ülke: United States


Orcid: 0000-0001-9039-9091
Yazar: Vivek Utgikar
Ülke: United States


Bibtex @araştırma makalesi { ijot426202, journal = {International Journal of Thermodynamics}, issn = {1301-9724}, eissn = {2146-1511}, address = {Yaşar DEMİREL}, year = {2018}, volume = {21}, pages = {158 - 172}, doi = {10.5541/ijot.426202}, title = {Wagner Equation Predicting Entire Curve for Pure Fluids from Limited VLE Data: Critical and Normal Boiling Points \& Acentric Factor}, key = {cite}, author = {Utgikar, Vivek and Nichols, Todd} }
APA Nichols, T , Utgikar, V . (2018). Wagner Equation Predicting Entire Curve for Pure Fluids from Limited VLE Data: Critical and Normal Boiling Points & Acentric Factor. International Journal of Thermodynamics, 21 (3), 158-172. DOI: 10.5541/ijot.426202
MLA Nichols, T , Utgikar, V . "Wagner Equation Predicting Entire Curve for Pure Fluids from Limited VLE Data: Critical and Normal Boiling Points & Acentric Factor". International Journal of Thermodynamics 21 (2018): 158-172 <http://dergipark.gov.tr/ijot/issue/38992/426202>
Chicago Nichols, T , Utgikar, V . "Wagner Equation Predicting Entire Curve for Pure Fluids from Limited VLE Data: Critical and Normal Boiling Points & Acentric Factor". International Journal of Thermodynamics 21 (2018): 158-172
RIS TY - JOUR T1 - Wagner Equation Predicting Entire Curve for Pure Fluids from Limited VLE Data: Critical and Normal Boiling Points & Acentric Factor AU - Todd Nichols , Vivek Utgikar Y1 - 2018 PY - 2018 N1 - doi: 10.5541/ijot.426202 DO - 10.5541/ijot.426202 T2 - International Journal of Thermodynamics JF - Journal JO - JOR SP - 158 EP - 172 VL - 21 IS - 3 SN - 1301-9724-2146-1511 M3 - doi: 10.5541/ijot.426202 UR - http://dx.doi.org/10.5541/ijot.426202 Y2 - 2018 ER -
EndNote %0 International Journal of Thermodynamics Wagner Equation Predicting Entire Curve for Pure Fluids from Limited VLE Data: Critical and Normal Boiling Points & Acentric Factor %A Todd Nichols , Vivek Utgikar %T Wagner Equation Predicting Entire Curve for Pure Fluids from Limited VLE Data: Critical and Normal Boiling Points & Acentric Factor %D 2018 %J International Journal of Thermodynamics %P 1301-9724-2146-1511 %V 21 %N 3 %R doi: 10.5541/ijot.426202 %U 10.5541/ijot.426202
ISNAD Nichols, Todd , Utgikar, Vivek . "Wagner Equation Predicting Entire Curve for Pure Fluids from Limited VLE Data: Critical and Normal Boiling Points & Acentric Factor". International Journal of Thermodynamics 21 / 3 (Eylül 2018): 158-172. http://dx.doi.org/10.5541/ijot.426202