66.6Control statements
6.7 Using Intrinsic Variables and Functions, and User- User-defined Functions
6.7.3 Steam table functions
6.7.3 Steam table functions
Table 6.6-3 lists the steam table functions that can be used in scripts. The steam table uses SI units. The details about each item are described in [1] and later sections.
Table 6.6-3 Steam table functions that can be used in scripts
No. Function Description
1 CPSLP(P) Calculates the specific heat of saturated water under constant pressure from the pressure.
2 CPSLT(T) Calculates the specific heat of saturated water under constant pressure from the temperature.
3 CPSVP(P) Calculates the specific heat of saturated steam under constant pressure from the pressure.
4 CPSVT(T) Calculates the specific heat of saturated steam under constant pressure from the temperature.
5 HPT(P,T) Calculates the specific enthalpy from the pressure and the temperature.
6 HSLP(P) Calculates the specific enthalpy of saturated water from the pressure.
7 HSLT(T) Calculates the specific enthalpy of saturated water from the temperature.
8 HSVP(P) Calculates the specific enthalpy of saturated steam from the pressure.
9 HSVT(T) Calculates the specific enthalpy of saturated steam from the temperature.
10 PSLT(T) Calculates the pressure of saturated water from the temperature.
11 SPH(P,H) Calculates the specific entropy from the pressure and the specific enthalpy.
12 SPT(P,T) Calculates the specific entropy from the pressure and the temperature.
13 SSLP(P) Calculates the specific entropy of saturated water from the pressure.
14 SSLT(T) Calculates the specific entropy of saturated water from the temperature.
15 SSVP(P) Calculates the specific entropy of saturated steam from the pressure.
16 SSVT(T) Calculates the specific entropy of saturated steam from the temperature.
17 TPH(P,H) Calculates the temperature from the pressure and the specific enthalpy.
18 TSLP(P) Calculates the saturation temperature from the pressure.
19 VPH(P,H) Calculates the specific volume from the pressure and the specific enthalpy.
20 VPT(P,T) Calculates the specific volume from the pressure and the temperature.
6
23 VSVP(P) Calculates the specific volume of saturated steam from the pressure.
24 VSVT(T) Calculates the specific volume of saturated steam from the temperature.
25 XLALP(P) Calculates the thermal conductivity of saturated water from the pressure.
26 XLALT(T) Calculates the thermal conductivity of saturated water from the temperature.
27 XLAVP(P) Calculates the thermal conductivity of saturated steam from the pressure.
28 XLAVT(T) Calculates the thermal conductivity of saturated steam from the temperature.
29 XMULP(P) Calculates the coefficient of viscosity of saturated water from the temperature.
30 XMULT(T) Calculates the coefficient of viscosity of saturated water from the temperature.
31 XMUVP(P) Calculates the coefficient of viscosity of saturated steam from the pressure.
32 XMUVT(T) Calculates the coefficient of viscosity of saturated steam from the temperature.
33 XNULP(P) Calculates the coefficient of kinematic viscosity of saturated water from the pressure.
34 XNULT(T) Calculates the coefficient of kinematic viscosity of saturated water from the temperature.
35 XNUVP(P) Calculates the coefficient of kinematic viscosity of saturated steam from the pressure.
36 XNUVT(T) Calculates the coefficient of kinematic viscosity of saturated steam from the temperature.
37 PRSLP(P) Calculates the Prandtl number of saturated water from the pressure.
38 PRSLT(T) Calculates the Prandtl number of saturated water from the temperature.
39 PRSVP(P) Calculates the Prandtl number of saturated steam from the pressure.
40 PRSVT(T) Calculates the Prandtl number of saturated steam from the temperature.
41 HPS(P, S) Calculates the specific enthalpy from the pressure and the specific entropy
6
(1) CPSLP
Feature Calculates the specific heat of saturated water under constant pressure from the pressure.
Format CPSLP(P)
Variables See the following table:
(2) CPSLT
Feature Calculates the specific heat of saturated water under constant pressure from the temperature.
Format CPSLT(T)
Variables See the following table:
(3) CPSVP
Feature Calculates the specific heat of saturated steam under constant pressure from the pressure.
Format CPSVP(P)
Variables See the following table:
Varia ble
I/O Data type
Definition Unit Input range
Cp Output double Specific heat of saturated water under constant pressure
kJ/kg K ―
P Input double Pressure kPa 0.981 kPa ≤ P ≤ 22119.884 kPa (0.01
at - 225.56 at)
Varia ble
I/O Data type
Definition Unit Input range
Cp Output double Specific heat of saturated water under constant pressure
kJ/kg K ―
Definition Unit Input range
Cp Output double Specific heat of saturated steam under constant pressure
kJ/kg K ―
P Input double Pressure kPa 0.981 kPa ≤ P ≤ 22119.884 kPa (0.01
at - 225.56 at)
6
(4) CPSVT
Feature Calculates the specific heat of saturated steam under constant pressure from the temperature.
Format CPSVT(T)
Variables See the following table:
(5) HPT
Feature Calculates the specific enthalpy from the pressure and the temperature.
Format HPT(P,T)
Variables See the following table:
(6) HSLP
Feature Calculates the specific enthalpy of saturated water from the pressure.
Format HSLP(P)
Variables See the following table:
Varia ble
I/O Data type
Definition Unit Input range
Cp Output double Specific heat of saturated steam under constant pressure
kJ/kg K ―
Definition Unit Input range
H Output double Specific enthalpy kJ/kg ―
P Input double Pressure kPa 9.81 kPa ≤ P ≤ 22119.884 kPa (0.1 at
-400 at)
Definition Unit Input range
H Output double Specific enthalpy of saturated water
kJ/kg ―
P Input double Pressure kPa 0.981 kPa ≤ P ≤ 22119.884 kPa (0.01
at - 225.56 at)
6
(7) HSLT
Feature Calculates the specific enthalpy of saturated water from the temperature.
Format HSLT(T)
Variables See the following table:
(8) HSVP
Feature Calculates the specific enthalpy of saturated steam from the pressure.
Format HSVP(P)
Variables See the following table:
(9) HSVT
Feature Calculates the specific enthalpy of saturated steam from the temperature.
Format HSVT(T)
Variables See the following table:
Varia ble
I/O Data type
Definition Unit Input range
H Output double Specific enthalpy of saturated water
Definition Unit Input range
H Output double Specific enthalpy of saturated steam
kJ/kg ―
P Input double Pressure kPa 0.981 kPa ≤ P ≤ 22119.884 kPa (0.01 at - 225.56 at)
Varia ble
I/O Data type
Definition Unit Input range
H Output double Specific enthalpy of saturated steam
kJ/kg ―
T Input double Temperature °C 6.69°C ≤ T ≤ 374.15°C
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(10) PSLT
Feature Calculates the pressure of saturated water from the temperature.
Format PSLT(T)
Variables See the following table:
(11) SPH
Feature Calculates the specific entropy from the pressure and the specific enthalpy.
Format SPH(P,H)
Variables See the following table:
(12) SPT
Feature Calculates the specific entropy from the pressure and the temperature.
Format SPH(P,T)
Variables See the following table:
Varia ble
I/O Data type
Definition Unit Input range
P Output double Pressure of saturated water kPa ―
T Input double Temperature °C 6.69°C ≤ T ≤ 374.15°C
Varia ble
I/O Data type
Definition Unit Input range
S Output double Specific entropy kJ/kg K ―
P Input double Pressure kPa 9.807 kPa ≤ P ≤ 39226.608 kPa (0.1 at -400 at)
H Input double Specific enthalpy kJ/kg 41.868 kJ/kg ≤ H ≤ 3684.382 kJ/kg (10 kcal/kg - 880 kcal/kg)
Varia ble
I/O Data type
Definition Unit Input range
S Output double Specific entropy kJ/kg K ―
P Input double Pressure kPa 9.807 kPa ≤ P ≤ 39226.608 kPa (0.1 at - 400 at)
T Input double Temperature °C 10°C ≤ T ≤ 650°C
6
(13) SSLP
Feature Calculates the specific entropy of saturated water from the pressure.
Format SSLP(P)
Variables See the following table:
(14) SSLT
Feature Calculates the specific entropy of saturated water from the temperature.
Format SSLT(T)
Variables See the following table:
(15) SSVP
Feature Calculates the specific entropy of saturated steam from the pressure.
Format SSVP(P)
Variables See the following table:
Variab le
I/O Data type
Definition Unit Input range
S Output double Specific entropy of saturated water
Definition Unit Input range
S Output double Specific entropy of saturated water
kJ/kg K ―
T Input double Temperature °C 6.69°C ≤ T ≤ 374.15°C
Varia ble
I/O Data type
Definition Unit Input range
S Output double Specific entropy of saturated steam
kJ/kg K ―
P Input double Pressure kPa 0.981 kPa ≤ P ≤ 22119.884 kPa (0.01 at - 225.56 at)
6
(16) SSVT
Feature Calculates the specific entropy of saturated steam from the temperature.
Format SSVT(T)
Variables See the following table:
(17) TPH
Feature Calculates the temperature from the pressure and the specific enthalpy.
Format TPH(P,H)
Variables See the following table:
(18) TSLP
Feature Calculates the saturation temperature from the pressure.
Format TSLP(P)
Variables See the following table:
Varia ble
I/O Data type
Definition Unit Input range
S Output double Specific entropy of saturated steam
kJ/kg K ―
T Input double Temperature °C 6.69°C ≤ T ≤ 374.15°C
Varia ble
I/O Data type
Definition Unit Input range
T Output double Temperature °C ―
P Input double Pressure kPa 9.807 kPa ≤ P ≤ 39226.608 kPa (0.1 at - 400 at)
H Input double Specific enthalpy kJ/kg 41.868 kJ/kg ≤ H ≤ 3684.382 kJ/kg (10 kcal/kg - 880 kcal/kg)
Varia ble
I/O Data type
Definition Unit Input range
T Output double Saturation temperature
°C ―
P Input double Pressure kPa 0.981 kPa ≤ P ≤ 22119.884 kPa (0.01 at - 225.56 at)
6
(19) VPH
Feature Calculates the specific volume from the pressure and the specific enthalpy.
Format VPH(P,H)
Variables See the following table:
(20) VPT
Feature Calculates the specific volume from the pressure and the temperature.
Format VPT(P,T)
Variables See the following table:
(21) VSLP
Feature Calculates the specific volume of saturated water from the pressure.
Format VSLP(P)
Variables See the following table:
Varia ble
I/O Data type
Definition Unit Input range
V Output double Specific volume m3/kg ―
P Input double Pressure kPa 9.807 kPa ≤ P ≤ 39226.608 kPa (0.1 at - 400 at)
H Input double Specific enthalpy kJ/kg 41.868 kJ/kg ≤ H ≤ 3684.382 kJ/kg (10 kcal/kg - 880 kcal/kg)
Varia ble
I/O Data type
Definition Unit Input range
V Output double Specific volume m3/kg ―
P Input double Pressure kPa 9.807 kPa ≤ P ≤ 39226.608 kPa (0.1 at - 400 at)
T Input double Temperature °C 10°C ≤ T ≤ 650°C
Variab le
I/O Data type
Definition Unit Input range
V Output double Specific volume of saturated water
m3/kg ―
P Input double Pressure kPa 0.981 kPa ≤ P ≤ 22119.884 kPa (0.01 at - 225.56 at)
6
(22) VSLT
Feature Calculates the specific volume of saturated water from the temperature.
Format VSLT(T)
Variables See the following table:
(23) VSVP
Feature Calculates the specific volume of saturated steam from the pressure.
Format VSVP(P)
Variables See the following table:
(24) VSVT
Feature Calculates the specific volume of saturated steam from the temperature.
Format VSVT(T)
Variables See the following table:
Varia ble
I/O Data type
Definition Unit Input range
V Output double Specific volume of saturated water
m3/kg ―
T Input double Temperature °C 6.69°C ≤ T ≤ 374.15°C
Varia ble
I/O Data type
Definition Unit Input range
V Output double Specific volume of saturated steam
Definition Unit Input range
V Output double Specific volume of saturated steam
m3/kg ―
T Input double Temperature °C 6.69°C ≤ T ≤ 374.15°C
6
(25) XLALP
Feature Calculates the thermal conductivity of saturated water from the pressure.
Format XLALP(P)
Variables See the following table:
(26) XLALT
Feature Calculates the thermal conductivity of saturated water from the temperature.
Format XLALT(T)
Variables See the following table:
(27) XLAVP
Feature Calculates the thermal conductivity of saturated steam from the pressure.
Format XLAVP(P)
Variables See the following table:
Varia ble
I/O Data type
Definition Unit Input range
λ Output double Thermal conductivity of saturated water
Definition Unit Input range
λ Output double Thermal conductivity of saturated water
W/m K ―
T Input double Temperature °C 6.69°C ≤ T ≤ 374.15°C
Varia ble
I/O Data type
Definition Unit Input range
λ Output double Thermal conductivity of saturated steam
W/m K ―
P Input double Pressure kPa 0.981 kPa ≤ P ≤ 22119.884 kPa (0.01 at - 225.56 at)
6
(28) XLAVT
Feature Calculates the thermal conductivity of saturated steam from the temperature.
Format XLAVT(T)
Variables See the following table:
(29) XMULP
Feature Calculates the coefficient of viscosity of saturated water from the pressure.
Format XMULP(P)
Variables See the following table:
(30) XMULT
Feature Calculates the coefficient of viscosity of saturated water from the temperature.
Format XMULT(T)
Variables See the following table:
Varia ble
I/O Data type
Definition Unit Input range
λ Output double Thermal conductivity of saturated steam
W/m K ―
T Input double Temperature °C 6.69°C ≤ T ≤ 374.15°C
Varia ble
I/O Data type
Definition Unit Input range
μ Output double Coefficient of viscosity of saturated water
Definition Unit Input range
μ Output double Coefficient of viscosity of saturated water
Pa s ―
T Input double Temperature °C 6.69°C ≤ T ≤ 374.15°C
6
(31) XMUVP
Feature Calculates the coefficient of viscosity of saturated steam from the pressure.
Format XMUVP(P)
Variables See the following table:
(32) XMUVT
Feature Calculates the coefficient of viscosity of saturated steam from the temperature.
Format XMUVT(T)
Variables See the following table:
(33) XNULP
Feature Calculates the coefficient of kinematic viscosity of saturated water from the pressure.
Format XNULP(P)
Variables See the following table:
Varia ble
I/O Data type
Definition Unit Input range
μ Outpu
t
double Coefficient of viscosity of saturated steam
Pa s ―
P Input double Pressure kPa 0.981 kPa ≤ P ≤22119.884 kPa (0.01 at - 225.56 at)
Varia ble
I/O Data type
Definition Unit Input range
μ Output double Coefficient of viscosity of saturated steam
Pa s ―
T Input double Temperature °C 6.69°C ≤ T ≤ 374.15°C
Varia ble
I/O Data type
Definition Unit Input range
ν Output double Coefficient of kinematic viscosity of saturated water
m2/s ―
P Input double Pressure kPa 0.981 kPa ≤ P ≤ 22119.884 kPa (0.01 at - 225.56 at)
6
(34) XNULT
Feature Calculates the coefficient of kinematic viscosity of saturated water from the temperature.
Format XNULT(T)
Variables See the following table:
(35) XNUVP
Feature Calculates the coefficient of kinematic viscosity of saturated steam from the pressure.
Format XNUVP(P)
Variables See the following table:
(36) XNUVT
Feature Calculates the coefficient of kinematic viscosity of saturated steam from the temperature.
Format XNUVT(T)
Variables See the following table:
Varia ble
I/O Data type
Definition Unit Input range
ν Output double Coefficient of kinematic viscosity of saturated water
m2/s ―
T Input double Temperature °C 6.69°C ≤ T ≤ 374.15°C
Varia ble
I/O Data type
Definition Unit Input range
ν Output double Coefficient of kinematic viscosity of saturated steam
Definition Unit Input range
ν Output double Coefficient of kinematic viscosity of saturated steam
m2/s ―
T Input double Temperature °C 6.69°C ≤ T ≤ 374.15°C
6
(37) PRSLP
Feature Calculates the Prandtl number of saturated water from the pressure.
Format PRSLP(P)
Variables See the following table:
(38) PRSLT
Feature Calculates the Prandtl number of saturated water from the temperature.
Format PRSLT(T)
Variables See the following table:
(39) PRSVP
Feature Calculates the Prandtl number of saturated steam from the pressure.
Format PRSVP(P)
Variables See the following table:
Varia ble
I/O Data type
Definition Unit Input range
Pr Output double Prandtl number of saturated water
Definition Unit Input range
Pr Output double Prandtl number of saturated water
― ―
T Input double Temperature °C 6.69°C ≤ T ≤ 374.15°C
Varia ble
I/O Data type
Definition Unit Input range
Pr Output double Prandtl number of saturated steam
― ―
P Input double Pressure kPa 0.981 kPa ≤ P ≤ 22119.884 kPa (0.01 at - 225.56 at)