Steam_Water - IF97
IF97 Steam Table은 다음 코드를 사용합니다
- xsteam2 by kpatvt
Javascript로 계산되는 항목은 xsteam2 모듈을 사용합니다.
Steam function UNIT
| Abbr. | INPUT Unit | RESULT Unit | Function Description |
|---|---|---|---|
| psat_T | Temperature, °C | bar | Saturation pressure |
| p_hs | Enthalpy, kJ/kg Entropy, kJ/(kgK) | bar | Pressure as a function of h and s |
| p_hrho | Enthalpy, kJ/kg Density, kg/m3 | bar | Pressure as a function of h and rho (density). Very inaccurate for solid water region since it's almost incompressible! |
| Tsat_p | Pressure, bar | °C | Saturation temperature |
| T_ph | Pressure, bar Enthalpy, kJ/kg | °C | Temperature as a function of pressure and enthalpy |
| T_ps | Pressure, bar Entropy, kJ/(kgK) | °C | Temperature as a function of pressure and entropy |
| T_hs | Enthalpy, kJ/kg Entropy, kJ/(kgK) | °C | Temperature as a function of enthalpy and entropy |
| hV_p | Pressure, bar | kJ/kg | Saturated Vapor enthalpy |
| hL_p | Pressure, bar | kJ/kg | Saturated liquid enthalpy |
| hV_T | Temperature, °C | kJ/kg | Saturated Vapor enthalpy |
| hL_T | Temperature, °C | kJ/kg | Saturated liquid enthalpy |
| h_pT | Pressure, bar Temperature, °C | kJ/kg | Enthalpy as a function of pressure and temperature |
| h_ps | Pressure, bar Entropy, kJ/(kgK) | kJ/kg | Enthalpy as a function of pressure and entropy |
| h_px | Pressure, bar | kJ/kg | Enthalpy as a function of pressure and Vapor fraction |
| h_Tx | Temperature, °C | kJ/kg | Enthalpy as a function of temperature and Vapor fraction |
| h_prho | Pressure, bar Density, kg/m3 | kJ/kg | Enthalpy as a function of pressure and density. Observe for low temperatures (liquid) this equation has 2 solutions. (Not valid!!) |
| vV_p | Pressure, bar | m3/kg | Saturated Vapor volume |
| vL_p | Pressure, bar | m3/kg | Saturated liquid volume |
| vV_T | Temperature, °C | m3/kg | Saturated Vapor volume |
| vL_T | Temperature, °C | m3/kg | Saturated liquid volume |
| v_pT | Pressure, bar Temperature, °C | m3/kg | Specific volume as a function of pressure and temperature |
| v_ph | Pressure, bar Enthalpy, kJ/kg | m3/kg | Specific volume as a function of pressure and enthalpy |
| v_ps | Pressure, bar Entropy, kJ/(kgK) | m3/kg | Specific volume as a function of pressure and entropy |
| rhoV_p | Pressure, bar | kg/m3 | Saturated Vapor density |
| rhoL_p | Pressure, bar | kg/m3 | Saturated liquid density |
| rhoV_T | Temperature, °C | kg/m3 | Saturated Vapor density |
| rhoL_T | Temperature, °C | kg/m3 | Saturated liquid density |
| rho_pT | Pressure, bar Temperature, °C | kg/m3 | Density as a function of pressure and temperature |
| rho_ph | Pressure, bar Enthalpy, kJ/kg | kg/m3 | Density as a function of pressure and enthalpy |
| rho_ps | Pressure, bar Entropy, kJ/(kgK) | kg/m3 | Density as a function of pressure and entropy |
| sV_p | Pressure, bar | kJ/(kgK) | Saturated Vapor entropy |
| sL_p | Pressure, bar | kJ/(kgK) | Saturated liquid entropy |
| sV_T | Temperature, °C | kJ/(kgK) | Saturated Vapor entropy |
| sL_T | Temperature, °C | kJ/(kgK) | Saturated liquid entropy |
| s_pT | Pressure, bar Temperature, °C | kJ/(kgK) | Specific entropy as a function of pressure and temperature (Returns saturated Vapor Enthalpy if mixture.) |
| s_ph | Pressure, bar Enthalpy, kJ/kg | kJ/(kgK) | Specific entropy as a function of pressure and enthalpy |
| uV_p | Pressure, bar | kJ/kg | Saturated Vapor internal energy |
| uL_p | Pressure, bar | kJ/kg | Saturated liquid internal energy |
| uV_T | Temperature, °C | kJ/kg | Saturated Vapor internal energy |
| uL_T | Temperature, °C | kJ/kg | Saturated liquid internal energy |
| u_pT | Pressure, bar Temperature, °C | kJ/kg | Specific internal energy as a function of pressure and temperature |
| u_ph | Pressure, bar Enthalpy, kJ/kg | kJ/kg | Specific internal energy as a function of pressure and enthalpy |
| u_ps | Pressure, bar Entropy, kJ/(kgK) | kJ/kg | Specific internal energy as a function of pressure and entropy |
| CpV_p | Pressure, bar | kJ/(kg°C) | Saturated Vapor heat capacity |
| CpL_p | Pressure, bar | kJ/(kg°C) | Saturated liquid heat capacity |
| CpV_T | Temperature, °C | kJ/(kg°C) | Saturated Vapor heat capacity |
| CpL_T | Temperature, °C | kJ/(kg°C) | Saturated liquid heat capacity |
| Cp_pT | Pressure, bar Temperature, °C | kJ/(kg°C) | Specific isobaric heat capacity as a function of pressure and temperature |
| Cp_ph | Pressure, bar Enthalpy, kJ/kg | kJ/(kg°C) | Specific isobaric heat capacity as a function of pressure and enthalpy |
| Cp_ps | Pressure, bar Entropy, kJ/(kgK) | kJ/(kg°C) | Specific isobaric heat capacity as a function of pressure and entropy |
| CvV_p | Pressure, bar | kJ/(kg°C) | Saturated Vapor isochoric heat capacity |
| CvL_p | Pressure, bar | kJ/(kg°C) | Saturated liquid isochoric heat capacity |
| CvV_T | Temperature, °C | kJ/(kg°C) | Saturated Vapor isochoric heat capacity |
| CvL_T | Temperature, °C | kJ/(kg°C) | Saturated liquid isochoric heat capacity |
| Cv_pT | Pressure, bar Temperature, °C | kJ/(kg°C) | Specific isochoric heat capacity as a function of pressure and temperature |
| Cv_ph | Pressure, bar Enthalpy, kJ/kg | kJ/(kg°C) | Specific isochoric heat capacity as a function of pressure and enthalpy |
| Cv_ps | Pressure, bar Entropy, kJ/(kgK) | kJ/(kg°C) | Specific isochoric heat capacity as a function of pressure and entropy |
| wV_p | Pressure, bar | m/s | Saturated Vapor speed of sound |
| wL_p | Pressure, bar | m/s | Saturated liquid speed of sound |
| wV_T | Temperature, °C | m/s | Saturated Vapor speed of sound |
| wL_T | Temperature, °C | m/s | Saturated liquid speed of sound |
| w_pT | Pressure, bar Temperature, °C | m/s | Speed of sound as a function of pressure and temperature |
| w_ph | Pressure, bar Enthalpy, kJ/kg | m/s | Speed of sound as a function of pressure and enthalpy |
| w_ps | Pressure, bar Entropy, kJ/(kgK) | m/s | Speed of sound as a function of pressure and entropy |
| my_pT | Pressure, bar Temperature, °C | Pa·s | Viscosity as a function of pressure and temperature |
| my_ph | Pressure, bar Enthalpy, kJ/kg | Pa·s | Viscosity as a function of pressure and enthalpy |
| my_ps | Pressure, bar Entropy, kJ/(kgK) | Pa·s | Viscosity as a function of pressure and entropy |
| pr_pT | Pressure, bar Temperature, °C | - | Prandtl number as a function of pressure and temperature |
| pr_ph | Pressure, bar Enthalpy, kJ/kg | - | Prandtl number as a function of pressure and enthalpy |
| tcL_p | Pressure, bar | W/(mK) | Saturated liquid thermal conductivity |
| tcV_p | Pressure, bar | W/(mK) | Saturated vapor thermal conductivity |
| tcL_T | Temperature, °C | W/(mK) | Saturated liquid thermal conductivity |
| tcV_T | Temperature, °C | W/(mK) | Saturated vapor thermal conductivity |
| tc_pT | Pressure, bar Temperature, °C | W/(mK) | Thermal conductivity as a function of pressure and temperature |
| tc_ph | Pressure, bar Enthalpy, kJ/kg | W/(mK) | Thermal conductivity as a function of pressure and enthalpy |
| tc_hs | Enthalpy, kJ/kg Entropy, kJ/(kgK) | W/(mK) | Thermal conductivity as a function of enthalpy and entropy |
| st_T | Temperature, °C | N/m | Surface tension for two phase water/steam as a function of temperature |
| st_p | Pressure, bar | N/m | Surface tension for two phase water/steam as a function of pressure |
| x_ph | Pressure, bar Enthalpy, kJ/kg | - | Vapor fraction as a function of pressure and enthalpy |
| x_ps | Pressure, bar Entropy, kJ/(kgK) | - | Vapor fraction as a function of pressure and entropy |
| vx_ph | Pressure, bar Enthalpy, kJ/kg | - | Vapor volume fraction as a function of pressure and enthalpy |
| vx_ps | Pressure, bar Entropy, kJ/(kgK) | - | Vapor volume fraction as a function of pressure and entropy |
Surface tension IAPWS Release on Surface tension of Ordinary Water Substance, September 1994
Vapor volume fraction Observe that Vapor volume fraction is very sensitive. Vapor volume is about 1000 times greater than liquid volume and therefore Vapor volume fraction gets close to the accuracy of steam IF-97
Thermal Conductivity Revised release on the IAPS Formulation 1985 for the Thermal Conductivity of ordinary water substance (IAPWS 1998)
Dynamic Viscosity Viscosity is not part of IAPWS Steam IF97. Equations from “Revised Release on the IAPWS Formulation 1985 for the Viscosity of Ordinary Water Substance”, 2003 are used. Viscosity in the mixed region (4) is interpolated according to the density. This is not true since it will be two fases.