Answer to Question #104348 in Mechanical Engineering for aya

Question

Calculate the internal energy and the enthalpy of 1 kg of air occupying 0.05 m3
at
20 oC at 20 bar. If the internal energy is increased by 120 kJ as the air compressed
to 50 bar. Calculate the new volume occupied by 1 kg of air.

Answer 1

We will assume that gas is ideal. So, the internal energy of air

For air and

The enthalpy of air