Hydrogen
Hydrogen function UNIT (WEB-EXCEL ONLY)
Notes
- Pressure: bara (absolute)
- Temperature: °C
- Enthalpy: kJ/kg
- Entropy: kJ/(kgK)
- Density: kg/m3, Specific volume: m3/kg
Temperature
Section titled “Temperature”| Abbr. | INPUT Unit | RESULT Unit | Function Description |
|---|---|---|---|
| HydrogenTsat_p | Pressure, bara | °C | Saturation temperature as a function of pressure |
| HydrogenT_ph | Pressure, bara Enthalpy, kJ/kg | °C | Temperature as a function of pressure and enthalpy |
| HydrogenT_ps | Pressure, bara Entropy, kJ/(kgK) | °C | Temperature as a function of pressure and entropy |
| HydrogenT_hs | Enthalpy, kJ/kg Entropy, kJ/(kgK) | °C | Temperature as a function of enthalpy and entropy |
Pressure
Section titled “Pressure”| Abbr. | INPUT Unit | RESULT Unit | Function Description |
|---|---|---|---|
| Hydrogenpsat_T | Temperature, °C | bara | Saturation pressure as a function of temperature |
| Hydrogenp_hs | Enthalpy, kJ/kg Entropy, kJ/(kgK) | bara | Pressure as a function of enthalpy and entropy |
| Hydrogenp_hrho | Enthalpy, kJ/kg Density, kg/m3 | bara | Pressure as a function of enthalpy and density |
Enthalpy
Section titled “Enthalpy”| Abbr. | INPUT Unit | RESULT Unit | Function Description |
|---|---|---|---|
| HydrogenhV_p | Pressure, bara | kJ/kg | Saturated vapor enthalpy |
| HydrogenhL_p | Pressure, bara | kJ/kg | Saturated liquid enthalpy |
| HydrogenhV_T | Temperature, °C | kJ/kg | Saturated vapor enthalpy |
| HydrogenhL_T | Temperature, °C | kJ/kg | Saturated liquid enthalpy |
| Hydrogenh_pT | Pressure, bara Temperature, °C | kJ/kg | Enthalpy as a function of pressure and temperature |
| Hydrogenh_ps | Pressure, bara Entropy, kJ/(kgK) | kJ/kg | Enthalpy as a function of pressure and entropy |
| Hydrogenh_px | Pressure, bara Vapor fraction (quality) | kJ/kg | Enthalpy as a function of pressure and vapor fraction |
| Hydrogenh_Tx | Temperature, °C Vapor fraction (quality) | kJ/kg | Enthalpy as a function of temperature and vapor fraction |
| Hydrogenh_prho | Pressure, bara Density, kg/m3 | kJ/kg | Enthalpy as a function of pressure and density |
Specific Volume
Section titled “Specific Volume”| Abbr. | INPUT Unit | RESULT Unit | Function Description |
|---|---|---|---|
| HydrogenvV_p | Pressure, bara | m3/kg | Saturated vapor specific volume |
| HydrogenvL_p | Pressure, bara | m3/kg | Saturated liquid specific volume |
| HydrogenvV_T | Temperature, °C | m3/kg | Saturated vapor specific volume |
| HydrogenvL_T | Temperature, °C | m3/kg | Saturated liquid specific volume |
| Hydrogenv_pT | Pressure, bara Temperature, °C | m3/kg | Specific volume as a function of pressure and temperature |
| Hydrogenv_ph | Pressure, bara Enthalpy, kJ/kg | m3/kg | Specific volume as a function of pressure and enthalpy |
| Hydrogenv_ps | Pressure, bara Entropy, kJ/(kgK) | m3/kg | Specific volume as a function of pressure and entropy |
Density
Section titled “Density”| Abbr. | INPUT Unit | RESULT Unit | Function Description |
|---|---|---|---|
| HydrogenrhoV_p | Pressure, bara | kg/m3 | Saturated vapor density |
| HydrogenrhoL_p | Pressure, bara | kg/m3 | Saturated liquid density |
| HydrogenrhoV_T | Temperature, °C | kg/m3 | Saturated vapor density |
| HydrogenrhoL_T | Temperature, °C | kg/m3 | Saturated liquid density |
| Hydrogenrho_pT | Pressure, bara Temperature, °C | kg/m3 | Density as a function of pressure and temperature |
| Hydrogenrho_ph | Pressure, bara Enthalpy, kJ/kg | kg/m3 | Density as a function of pressure and enthalpy |
| Hydrogenrho_ps | Pressure, bara Entropy, kJ/(kgK) | kg/m3 | Density as a function of pressure and entropy |
Entropy
Section titled “Entropy”| Abbr. | INPUT Unit | RESULT Unit | Function Description |
|---|---|---|---|
| HydrogensV_p | Pressure, bara | kJ/(kgK) | Saturated vapor entropy |
| HydrogensL_p | Pressure, bara | kJ/(kgK) | Saturated liquid entropy |
| HydrogensV_T | Temperature, °C | kJ/(kgK) | Saturated vapor entropy |
| HydrogensL_T | Temperature, °C | kJ/(kgK) | Saturated liquid entropy |
| Hydrogens_pT | Pressure, bara Temperature, °C | kJ/(kgK) | Specific entropy as a function of pressure and temperature |
| Hydrogens_ph | Pressure, bara Enthalpy, kJ/kg | kJ/(kgK) | Specific entropy as a function of pressure and enthalpy |
Heat Capacity
Section titled “Heat Capacity”| Abbr. | INPUT Unit | RESULT Unit | Function Description |
|---|---|---|---|
| HydrogenCpV_p | Pressure, bara | kJ/(kgK) | Saturated vapor heat capacity |
| HydrogenCpL_p | Pressure, bara | kJ/(kgK) | Saturated liquid heat capacity |
| HydrogenCpV_T | Temperature, °C | kJ/(kgK) | Saturated vapor heat capacity |
| HydrogenCpL_T | Temperature, °C | kJ/(kgK) | Saturated liquid heat capacity |
| HydrogenCp_pT | Pressure, bara Temperature, °C | kJ/(kgK) | Specific isobaric heat capacity as a function of pressure and temperature |
| HydrogenCp_ph | Pressure, bara Enthalpy, kJ/kg | kJ/(kgK) | Specific isobaric heat capacity as a function of pressure and enthalpy |
| HydrogenCvV_p | Pressure, bara | kJ/(kgK) | Saturated vapor isochoric heat capacity |
| HydrogenCvL_p | Pressure, bara | kJ/(kgK) | Saturated liquid isochoric heat capacity |
| HydrogenCvV_T | Temperature, °C | kJ/(kgK) | Saturated vapor isochoric heat capacity |
| HydrogenCvL_T | Temperature, °C | kJ/(kgK) | Saturated liquid isochoric heat capacity |
| HydrogenCv_pT | Pressure, bara Temperature, °C | kJ/(kgK) | Specific isochoric heat capacity as a function of pressure and temperature |
| HydrogenCv_ph | Pressure, bara Enthalpy, kJ/kg | kJ/(kgK) | Specific isochoric heat capacity as a function of pressure and enthalpy |
Speed of Sound
Section titled “Speed of Sound”| Abbr. | INPUT Unit | RESULT Unit | Function Description |
|---|---|---|---|
| Hydrogenw_pT | Pressure, bara Temperature, °C | m/s | Speed of sound as a function of pressure and temperature |
| Hydrogenw_ph | Pressure, bara Enthalpy, kJ/kg | m/s | Speed of sound as a function of pressure and enthalpy |
| Hydrogenw_ps | Pressure, bara Entropy, kJ/(kgK) | m/s | Speed of sound as a function of pressure and entropy |
Viscosity
Section titled “Viscosity”| Abbr. | INPUT Unit | RESULT Unit | Function Description |
|---|---|---|---|
| Hydrogenmy_pT | Pressure, bara Temperature, °C | Pa·s | Viscosity as a function of pressure and temperature |
| Hydrogenmy_ph | Pressure, bara Enthalpy, kJ/kg | Pa·s | Viscosity as a function of pressure and enthalpy |
| Hydrogenmy_ps | Pressure, bara Entropy, kJ/(kgK) | Pa·s | Viscosity as a function of pressure and entropy |
Thermal Conductivity
Section titled “Thermal Conductivity”| Abbr. | INPUT Unit | RESULT Unit | Function Description |
|---|---|---|---|
| HydrogentcL_p | Pressure, bara | W/(mK) | Saturated liquid thermal conductivity |
| HydrogentcV_p | Pressure, bara | W/(mK) | Saturated vapor thermal conductivity |
| HydrogentcL_T | Temperature, °C | W/(mK) | Saturated liquid thermal conductivity |
| HydrogentcV_T | Temperature, °C | W/(mK) | Saturated vapor thermal conductivity |
| Hydrogentc_pT | Pressure, bara Temperature, °C | W/(mK) | Thermal conductivity as a function of pressure and temperature |
| Hydrogentc_ph | Pressure, bara Enthalpy, kJ/kg | W/(mK) | Thermal conductivity as a function of pressure and enthalpy |
| Hydrogentc_hs | Enthalpy, kJ/kg Entropy, kJ/(kgK) | W/(mK) | Thermal conductivity as a function of enthalpy and entropy |
Surface Tension
Section titled “Surface Tension”| Abbr. | INPUT Unit | RESULT Unit | Function Description |
|---|---|---|---|
| Hydrogenstvap_T | Temperature, °C | N/m | Surface tension as a function of temperature |
| Hydrogenstvap_p | Pressure, bara | N/m | Surface tension as a function of pressure |