Some correlation questions.
Some correlation questions.
(OP)
Hello.
Has anyone ever heard of Lucas in Reid, Prausnitz and Poling? I don't have the book, if someone does have this book; can you tell me exactly what this correlation or method is entails?
Also, who has a a good explanation of the Chen correlation. I was googling it and did not find much.
I also need the actual Chen correlation itself, sorry I cannot find these formulas; I don't have the right books.
Thank you!
Has anyone ever heard of Lucas in Reid, Prausnitz and Poling? I don't have the book, if someone does have this book; can you tell me exactly what this correlation or method is entails?
Also, who has a a good explanation of the Chen correlation. I was googling it and did not find much.
I also need the actual Chen correlation itself, sorry I cannot find these formulas; I don't have the right books.
Thank you!





RE: Some correlation questions.
The Chen correlation was designed to estimate enthalpy of vaporization using vapor pressure data and eliminating the acentric factor. It averages ~ 2% error overall. It's real good for sat'd and unsat'd hydrocarbons (0.4-1.2% error). Not so good for alcohols and oxides (4-5 % error).
ΔHvb=RTcTbr(3.978Tbr-3.938+1.555ln(Pc))/(1.07-Tbr)
ΔHvb=ΔHv at the normal boiling point in cal/g-mol
R=gas constant, 1.987 cal/g-mol K
Tc=critical temperature in K
Tbr=reduced normal boiling point (Tb/Tc)
Pc=critical pressure in atm
Good luck,
Latexman
RE: Some correlation questions.
RE: Some correlation questions.
I do not know the relation of viscosity and pressure of water for instance, does someone happen to know this?
RE: Some correlation questions.
Good luck,
Latexman
RE: Some correlation questions.