hmolar, smolar etc. are incorrect for HEOS backend with PD inputs

[mayersre]

The two examples with result show the problem
Coolprop 5.0.2/Python 3.4/Windows 8

cp.PropsSI('H','P',50000,'D',2.22,'R407C')
result = 2527963510.2319546

cp.PropsSI('H','P',50000,'D',2.22,'REFPROP::R407C')
result = 392821.67054645496

[ibell]

In any case, its a bug and we will fix it in 5.0.1

[ibell]

Off the top of your head - any idea which one is right?

On Wed, Dec 3, 2014 at 1:15 PM, mayersre notifications@github.com wrote:

The two examples with result show the problem
Coolprop 5.0.2/Python 3.4/Windows 8

cp.PropsSI('H','P',50000,'D',2.22,'R407C')
result = 2527963510.2319546

cp.PropsSI('H','P',50000,'D',2.22,'REFPROP::R407C')
result = 392821.67054645496

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#273.

[ibell]

Sounds like we are getting the liquid solution instead of the vapor solution

Interestingly, we get the same temperature:

In [1]: import CoolProp

In [2]: CoolProp.CoolProp.PropsSI('H','P',50000,'D',2.22,'R407C')
Out[2]: 2527963510.2319517

In [3]: CoolProp.CoolProp.PropsSI('H','P',50000,'D',2.22,'REFPROP::R407C')
Out[3]: 392821.6705464548

In [4]: CoolProp.CoolProp.PropsSI('T','P',50000,'D',2.22,'R407C')
Out[4]: 238.05110549432456

In [5]: CoolProp.CoolProp.PropsSI('T','P',50000,'D',2.22,'REFPROP::R407C')
Out[5]: 238.05110553305806

[ibell]

Looks like it is only a question of reference state:

In [7]: CoolProp.CoolProp.PropsSI('P','T',T,'D',2.22,'REFPROP::R407C')
Out[7]: 50000.0

In [8]: CoolProp.CoolProp.PropsSI('P','T',T,'D',2.22,'R407C')
Out[8]: 50000.00000863266

[ibell]

Need to add a test for reference state for enthalpy for pseudo-pure as well: #276

[ibell]

Hmm. Now I am confused.