0.8 kg/s of air flows through a compressor in steady state conditions. The properties - of air at the entry are: pressure 1 bar, velocity 10 m/s, specific volume 0.95 m3/kg and internal energy 30...

0.8 kg/s of air flows through a compressor in steady state conditions. The properties - of air at the entry are: pressure 1 bar, velocity 10 m/s, specific volume 0.95 m3/kg and internal energy 30 kJ/kg. The corresponding values at the exit are 8 bar, 6 m/s, 0.2 m3/kg and 124 kJ/kg. Neglecting the change in PE, determine the power input and the pipe diameters of the entry and exit.