BugFix SingleCompFlash - Solid sublimation

[Greg66]

Added and fixed solid sublimation for all kinds flash in this PP

[DanWBR]

@Greg66 did you test your modifications with compounds that have no temperature of fusion defined, i.e. pseudocompounds, user-defined, compounds from dbs other than chemsep...

[Greg66]

Yes, i did some tests for that scenario as well. It's all behaving well.

A basic scenario was checked with all available flash procedures. Pure CO2 was tested for all situations: vapor, liquid, solid, partial sublimation and partial evaporation from liquid.

After that i modified the CO2 component by replacing temperature of fusion and enthalpy of fusion with a value of zero ("0") to simulate a not well defined component. This later situation is a fall back to your original calculation procedures and works without problems. As no data for solid is defined a liquid phase is calculated instead of solid now. The liquid range extends down to 0 K (which is not a realistic behavior).

[DanWBR]

@Greg66 Ok, great!