Special thermodynamic data banks for the PSRK method

By default, a Fluid Type that uses the Predictive Soave-Redlich-Kwong (PSRK) method as its system method includes the System:PSRKALPH data bank and the System:PSRKTCPC data bank.

The PSRKALPH data bank is an ALPHA data bank that includes PSRK-specific data for the c1, c2, and c3 coefficients for the Mathias-Copeman alpha function. It includes data for 873 components. We have tried to include all the components that you may need in your chemical processes. However, if your Fluid Type includes components that are not available in the PSRKALPH data bank, you may want to create your own ALPHA data bank to supplement the PSRKALPH data bank and add it to your Fluid Type.

The PSRKTCPC data bank is a PURECOMP data bank that includes PSRK-specific data for the critical temperature and critical pressure of 877 components. We have tried to include all the components that you may need in your chemical processes. The Fluid Type uses this data bank as a pure component property override data bank. Fluid Types currently support only a single data bank for pure component property overrides.

If your Fluid Type includes components that are not available in the PSRKTCPC data bank, we recommend that you contact our customer support to request an extended copy of the PSRKTCPC data bank that includes all your required components. You can then replace the PSRKTCPC data bank in your Fluid Type with the extended data bank.

You should use the PSRKTCPC data bank only with the PSRK method.