thermodynamics 1

2 Determine the enthalpy change of nitrogen, in kJ/kg, as it is heated from 600 to 1000 K, using (a) the empirical specific heat equation as a function of temperature, (b) the specific heat value at the average temperature, (c) the specific heat value at room temperature, and (d) calculate the percentage error in parts (b and c). [Ans. (a) 447.8kJ/kg ]