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Some scientific and engineering data online

german

Calculation of thermodynamic state variables of tetrafluorethane - R134a

Lower limit for calculation: -70 C, 1 bar      upper limit: 180 C, 300 bar.

Pressure:
Temperature:



Calculation of thermodynamic state variables of Tetrafluorethan - R134a in saturation state, boiling curve

Lower limit for calculation: -90 C, 0.015 bar bar      upper limit: 100 C, 39 bar.

Pressure:
OR
Temperature:



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 tetrafluorethane : if you found an error, please mail to: wischnewski@mpib-berlin.mpg.de. No garanty for correctness.

Thermodynamic constants of 1,1,1,2-Tetrafluorethane - R134a - C2H2F4:

molar mass
102.032 [ kg / kmol ]
gasconstant R
81.488856 [ J / (kg K) ]
isentropic exponent
1.13
critical state variables:
pcrit
 40.56 [ bar ]
Tcrit
 374.18 bzw. 101.03 [ K bzw. C]
densitycrit
 508 [ kg / m3 ]
tripelpoint pressure pTr
 0.0039 [ bar]
tripelpoint temperature
 169.85 bzw. -103.3 [ K bzw. C]

 

 



Released june 2007

Wikipedia -> R134a