Uso das equações generalizadas de pitzer para avaliação termodinâmica de gases

The Virial equation was the basis for generalized Pitzer equation and considered the interaction forces between molecules, as preponderant to know the mechanical behavior of process. The Virial equation was based on polynomial equation whose degree takes into account the number of molecules that int...

Full description

Saved in:
Bibliographic Details
Main Authors: Muachia, Alfredo, Manuel, Anatalisio, Marques, Jane, Barros, Antonio André Chivanga, Lemos, Maria
Format: Article
Language:Portuguese
Published: 2020
Subjects:
State Equations
Thermodinamic
Pitzer Equation
Compressibility Factor
Ecuación de estado
termodinámica
Pitzer
factor de compresibilidad
Equação de estado
termodinâmica
fator de compressibilidade
Online Access:https://dialnet.unirioja.es/servlet/oaiart?codigo=7490821
Source:SAPIENTIAE, ISSN 2183-5063, Vol. 6, Nº. 1, 2020 (Ejemplar dedicado a: JULHO-DEZEMBRO 2020), pags. 35-43
Tags: Add Tag
No Tags: Be the first to tag this record
Uso das equações generalizadas de pitzer para avaliação termodinâmica de gases
Summary: The Virial equation was the basis for generalized Pitzer equation and considered the interaction forces between molecules, as preponderant to know the mechanical behavior of process. The Virial equation was based on polynomial equation whose degree takes into account the number of molecules that interact with each other. The absence of experimental data for the application of the Virial equation resulted in the proposal of generalized correlations that make it possible to determine the thermodynamic parameters, based on the critical and reduced properties of each gas, in addition to the acentric factor that relates the size of the molecules. For this correlation, was insited the acentric factor that relates with moleculares size. In this way, here were evaluate the behavior of gas compressibility factor (Zi) as function of pressure and temperature, based on a numerical study carried out from a computer program, developed in C++ language, using generalized Pitzer`s equation, for three differents gases. From the results obtained, it was possible to observe the similarity of Zi behavour and its dependence with pressure and temperature. For this, we concluded that molecular attraction and repulsion forces are more effective for systems with high pressure. The attractive forces are more intense above 200 bar, when the repulsive forces prevail. It was also concluded that thermodynamic gases behavior is directly related to characteristics of type of gas evaluate.

Similar Items