The main 4 functions in this package are the functions returning the appropriate region for two input variables.
In addition, functions of the boiling and condensation curves compute the specific enthalpy, specific entropy, or density on these
curves. The functions for the saturation pressure and temperature are included in the package Basic because they are part of
the original IAPWS/IF97 standards document. These functions are also aliased to
be used directly from package Water.
All other functions are auxiliary functions called from the region functions to check a specific boundary.
| Name | Description |
|---|
 boundary23ofT
| Boundary function for region boundary between regions 2 and 3 (input temperature) |
| boundary23ofp
| Boundary function for region boundary between regions 2 and 3 (input pressure) |
| hlowerofp5
| Explicit lower specific enthalpy limit of region 5 as function of pressure |
| hupperofp5
| Explicit upper specific enthalpy limit of region 5 as function of pressure |
| slowerofp5
| Explicit lower specific entropy limit of region 5 as function of pressure |
| supperofp5
| Explicit upper specific entropy limit of region 5 as function of pressure |
| hlowerofp1
| Explicit lower specific enthalpy limit of region 1 as function of pressure |
| hupperofp1
| Explicit upper specific enthalpy limit of region 1 as function of pressure (meets region 4 saturation pressure curve at 623.15 K) |
| slowerofp1
| Explicit lower specific entropy limit of region 1 as function of pressure |
| supperofp1
| Explicit upper specific entropy limit of region 1 as function of pressure (meets region 4 saturation pressure curve at 623.15 K) |
| hlowerofp2
| Explicit lower specific enthalpy limit of region 2 as function of pressure (meets region 4 saturation pressure curve at 623.15 K) |
| hupperofp2
| Explicit upper specific enthalpy limit of region 2 as function of pressure |
| slowerofp2
| Explicit lower specific entropy limit of region 2 as function of pressure (meets region 4 saturation pressure curve at 623.15 K) |
| supperofp2
| Explicit upper specific entropy limit of region 2 as function of pressure |
| d1n
| Density in region 1 as function of p and T |
| d2n
| Density in region 2 as function of p and T |
| dhot1ofp
| Density at upper temperature limit of region 1 |
| dupper1ofT
| Density at upper pressure limit of region 1 |
| hl_p_R4b
| Explicit approximation of liquid specific enthalpy on the boundary between regions 4 and 3 |
| hv_p_R4b
| Explicit approximation of vapour specific enthalpy on the boundary between regions 4 and 3 |
| sl_p_R4b
| Explicit approximation of liquid specific entropy on the boundary between regions 4 and 3 |
| sv_p_R4b
| Explicit approximation of vapour specific entropy on the boundary between regions 4 and 3 |
| rhol_p_R4b
| Explicit approximation of liquid density on the boundary between regions 4 and 3 |
| rhov_p_R4b
| Explicit approximation of vapour density on the boundary between regions 4 and 2 |
| boilingcurve_p
| Properties on the boiling curve |
| dewcurve_p
| Properties on the dew curve |
| hvl_p
| |
| hl_p
| Liquid specific enthalpy on the boundary between regions 4 and 3 or 1 |
| hv_p
| Vapour specific enthalpy on the boundary between regions 4 and 3 or 2 |
| hvl_p_der
| Derivative function for the specific enthalpy along the phase boundary |
| rhovl_p
| |
| rhol_p
| Density of saturated water |
| rhov_p
| Density of saturated vapour |
| rhovl_p_der
| |
| sl_p
| Liquid specific entropy on the boundary between regions 4 and 3 or 1 |
| sv_p
| Vapour specific entropy on the boundary between regions 4 and 3 or 2 |
| rhol_T
| Density of saturated water |
| rhov_T
| Density of saturated vapour |
| region_ph
| Return the current region (valid values: 1,2,3,4,5) in IF97 for given pressure and specific enthalpy |
| region_ps
| Return the current region (valid values: 1,2,3,4,5) in IF97 for given pressure and specific entropy |
| region_pT
| Return the current region (valid values: 1,2,3,5) in IF97, given pressure and temperature |
| region_dT
| Return the current region (valid values: 1,2,3,4,5) in IF97, given density and temperature |
| hvl_dp
| Derivative function for the specific enthalpy along the phase boundary |
| dhl_dp
| Derivative of liquid specific enthalpy on the boundary between regions 4 and 3 or 1 w.r.t. pressure |
| dhv_dp
| Derivative of vapour specific enthalpy on the boundary between regions 4 and 3 or 1 w.r.t. pressure |
| drhovl_dp
| |
| drhol_dp
| Derivative of density of saturated water w.r.t. pressure |
| drhov_dp
| Derivative of density of saturated steam w.r.t. pressure |
Modelica.Media.Water.IF97_Utilities.BaseIF97.Regions.boundary23ofT