Discrepancy between properties returned via different methods in 7.0 release #2590
Description
When CoolProp 7.0 was released, the CI for the IDAES interface to CoolProp began failing. This failure was not the result of new syntax being introduced, but because of inconsistency in the information returned by get_fluid_param_string and PropsSI.
import json
import CoolProp.CoolProp as CP
prop_str = CP.get_fluid_param_string("benzene", "JSON")
prop_dict = json.loads(prop_str)[0]
print(f"Critical temperature from string: {prop_dict["STATES"]["critical"]["T"]}")
print(f"Critical temperature from PropsSI: {CP.PropsSI("Tcrit","benzene")}")
print(f"Critical pressure from string: {prop_dict["STATES"]["critical"]["p"]}")
print(f"Critical pressure from PropsSI: {CP.PropsSI("Pcrit","benzene")}")
Critical temperature from string: 562.02
Critical temperature from PropsSI: 562.0196911219722
Critical pressure from string: 4894000.0
Critical pressure from PropsSI: 4906288.781088226
This inconsistency isn't that large (about 0.25% in the case of critical pressure), but is still discomfiting. Is this new behavior intended?