Water PH flash failures

[LugPaw]

In an Excel/VBA simulation that I was running, REFPROP Version 10.0.0.98a complained about a “type mismatch” trying to extract the temperature of WATER from the given pair of pressure and enthalpy values in the shaded row of the table below.

This is weird because the inputs are nowhere near edge of the range of validity. In fact, perturbing the enthalpy by 0.5 and 1 kJ/kg on the minus side gives the correct values, while I have to perturb it by a full 1 kJ/kg to get it to evaluate correctly on the plus side.

Is there a patch that fixes this issue?

[ianhbell]

You'll need the beta. Please email me at [email protected] for a fix for this case