Humid Specific Heat:
The enthalpy of moist air may also be written as following
h=(Cpa + ωCpv) t + ω(hfg)0oC
= Cpt + ω(hfg)0oC .........6.30
here Cp= Cpa + ωCpv ...6.31
= (1.005 + 1.88 ω) kJ/ (kg d.a.) (K)
is known as the humid specific heat. This is the specific heat of moist air (1 + ω) kg per kg of dry air.