Calculator the IAPWS-IF97 region number given (any combination of) property values Used in the same way as Solver2::solve but the solution is not done, only the region is found.

fp Value of FirstProp property
sp Value of SecondProp property
To find the region for steam with u = 1500 kJ/kg and v = 0.02 m/kg, use the following:
Solver2<SpecificEnergy,SpecificVolume> SS;
cerr << SS.whichRegion(1500. * kJ_kg, 0.02 * m3_kg);

Generated on Tue Feb 10 18:37:37 2009 for freesteam by  doxygen 1.5.6