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Some scientific and engineering data online

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Calculation of thermodynamic state variables of ammonia

lower limit for calculation: -50 C, 1 bar      upper limit: 300 C, 500 bar

Pressure:
Temperature:



Calculation of thermodynamic state variables of ammonia on the boiling curve

lower limit for calculation: -75 C, 0.08 bar bar      upper limit: 130 C, 108 bar.

Druck:
OR
Temperatur:

The following thermodynamic properties will be calculated:
density, dynamic viscosity, kinematic viscosity, specific enthalpy, specific entropy, specific isobar heat capacity cp, thermic conductivity, coefficient of thermal expansion, heat conductance, thermal diffusivity, Prandtl-number, coefficient of compressibility Z, speed of sound.
Calculation of Ammonia : if you found an error, please mail to: wischnewski@mpib-berlin.mpg.de. No garanty for correctness.

Thermodynamic constants of Ammonia - NH3:

molar mass
17.0305 [ kg / kmol ]
gasconstant R
488.2175 [ J / (kg K) ]
isentropic exponent
1.312
critical state variables:
pcrit
 113.39 [ bar ]
Tcrit
 405.4 bzw. 132.25 [ K bzw. C]
densitycrit
 225 [ kg / m3 ]
tripelpoint pressure pTr
 0.0608 [ bar]
tripelpoint temperature
 195.5 bzw. -77.65 [ K bzw. C]

 

Ammonia at normconditions, tnorm= 0oC,    pnorm= 1013,25 mbar:

density
 0.772 [ kg / m3 ]
isobar heat capacity cp
 2.056 [ kJ / (kg K) ]
isochor heat capacity cv
 0.6552 [ kJ / (kg K) ]
speed of sound
 314.8 [ m / s ]

 



Released june 2007

Wikipedia ->Ammoniak