Fitting

Specific heat


Symbol	Definition	Unit
T _refS	Specific heat reference temperature	°C
C _ref	Specific heat at T _refS and P _ref	J/K/Kg
a	Specific heat first order temperature coefficient at T _refS and P _ref (K-1)	K-1
b	Specific heat second order temperature coefficient at T _refS and P _ref (K-2)	K-2

Note: All the parameters defined in the previous table are defined for the reference pressure Pref mentioned in the gas mass density section.

Note: For a given temperature, the gas specific heat (J/K/kg) changes with the pressure following the perfect gas law.

The specific heat C computed at a pressure P is computed as below:


Symbol	Definition	Unit
P _ref	Reference pressure	Pa
C _P	Specific heat at the pressure P	J/K/Kg
C _Pref	Specific heat at the pressure P _ref	J/K/Kg