Klincewicz method

The quality of the Klincewicz method is not superior to older methods, especially the method of Ambrose^[2] gives somewhat better results as stated by the original authors and by Reid et al.^[3] The advantage of the Klincewicz method is that it is less complex.

The quality and complexity of the Klincewicz method is comparable to the Lydersen method^[4] from 1955 which has been used widely in chemical engineering.

The aspect where the Klincewicz method is unique and useful^[3] are the alternative equations where only very basic molecular data like the molecular weight and the atom count are used.

The diagrams show estimated critical data of hydrocarbons together with experimental data.^[5] An estimation would be perfect if all data points would lie directly on the diagonal line. Only the simple correlation of the Klincewicz method with the molecular weight and the atom count have been used in this example.

• 
  Critical temperatures
• 
  Critical pressures
• 
  Critical volumes

${\displaystyle T_{c}\,=\,45,40-0,77*MW+1,55*T_{b}+\sum _{j=1}^{35}n_{j}\Delta _{j}}$

${\displaystyle (MW/P_{c})^{1/2}\,=\,0.335+0.010*MW+\sum _{j=1}^{35}n_{j}\Delta _{j}}$

${\displaystyle V_{c}\,=\,25,2+2,80*MW+\sum _ {j=1}^{35}n_ {j}\Delta _ {j}}$

${\displaystyle T_{c}\,=\,50.2-0.16*MW+1.41*T_{b}}$

${\displaystyle (MW/P_{c})^{1/2}\,=\,0,335+0,009*MW+0,019A}$

${\displaystyle V_{c}\,=\,20+0.088*MW+13.4*A}$

con

*Punto de ebullición normal utilizado T _b = 329,250 K

Peso molecular utilizado: 58,080 ^g / _mol

Cantidad de átomos utilizados: 10

A modo de comparación, los valores experimentales para Tc, Pc y Vc son 508,1 K, 47,0 bar y 209 ^cm³  / mol, respectivamente. ^{[ 3 ]}