Enthalpy
Enthalpy of a system is defined as the mass of the
system, m, multiplied by the specific enthalpy of the system, h i.e.
H=m h
Specific Enthalpy
Specific enthalpy of a working fluid, h, is a property of the fluid
which is defined as:
h=u+P v
where,
u= Specific internal energy
P= Pressure
v= Specific volume
Specific enthalpy has the same dimension as [energy/mass].
The SI unit of specific enthalpy is J/kg. Other units are:
- 1 kJ/kg= 1000 J/kg
- 1 erg/g= 1E-4 J/kg
- 1 Btu/lbm= 2326 J/kg
- 1 cal/g= 4184 J/kg
Copyright © 1998 Taftan Data. All Rights Reserved