1. Thermodynamic models in aspen hysys
Lecturer: Amirhossein Eghbalmanesh
Scientific association of Chemical engineering
University of tehran

2. Physical property
It can calculate number of phases, mole and mass fractions from temperature and pressure.
Calculate fraction of components in equilibrium state.
Calculate volume of each phase
Calculate molar enthalpy, molar entropy and heat capacity.
Calculate other properties of mixture
Amirhossein Eghbalmanesh

3. Physical Properties: Filters
Equation Of State (EOS)
Activity Models (ACM)
Chao Seader Models (CS)
Vapour Pressure Models (VP)
Miscellaneous Types (MT)
Amirhossein Eghbalmanesh

4. Equation Of State (EOS)
Equations of state work reasonably well for non-polar fluids.
For highly non-ideal systems another method is needed to estimate the thermodynamic properties.
This method is activity models
Amirhossein Eghbalmanesh

5. Activity Models (ACM)
Amirhossein Eghbalmanesh

6. Chao Seader Models (CS)
For heavy hydrocarbons
Pressure is less than 1500 psia
Temperature range ºF
CS-Grayson Streed Recommended for simulating heavy hydrocarbon systems with a high hydrocarbon content
Amirhossein Eghbalmanesh

7. Vapour Pressure Models (VP)
Used for ideal mixtures at low pressures
Ideal mixtures include hydrocarbon systems and mixtures such as ketenes and alcohols
Used as first approximations for non-ideal systems
Antoine applicable for low pressure systems that behave ideally
Braun K10 Applicable to heavy hydrocarbon systems at low pressures
Esso Tabular Applicable to hydrocarbon systems at low Pressures, Employs a modification of the Maxwell-Bonnel, vapour pressure model
Amirhossein Eghbalmanesh

8. Micellaneous Types (MT)
Contains property package that are unique and do not fit into groups that are previously mentioned
ASME Steam Restricted to H2O, Uses ASME 1967 Steam Table
NBS Steam Restricted to H2O, Utilizes the NBS 1984 Steam Tables
Amirhossein Eghbalmanesh

9. Amirhossein Eghbalmanesh

10. Amirhossein Eghbalmanesh

11. Physical property Chemical systems Primary models Secondary models
Air seperatiom
Peng-Robinson
Soave-Redlich-Kwong
Gas processing
BWRS
Gas Treating
Kent-Eisenberg
Electrolyte NRTL
Petroleum Refining
BK10
Chao-Seader
Grayson-Streed
Lee-Kesler-Plocker
Amirhossein Eghbalmanesh

12. Chemical systems Primary models Secondary models Petrochemicals-VLE
Peng-Robinson
Soave-Redlich-Kwong
PSRK
NRTL
UNIQUAC
UNIFAC
Petrochemicals-LLE
Chemicals
Steam
NBS/NRC
Electrolytes
Electrolyte NRTL
Zemaitis
Pitzer
Oligomers
Polymer NRTL
Polymers
PC-SAFT
Sanchez-Lacombe
SAFT
UNIFAC-FV
Environmental
UNIFAC+ Henry's Law
Amirhossein Eghbalmanesh