Ethylene (C2H4) with a temperature of 320 K, a pressure of 20 bar and a real gas behavior is compressed in a compressor, and these values are 380 K and 100 bar at the compressor outlet. During the compression process, there is a heat transfer of 150 kJ/kg to the environment.

Calculate the work required (kJ/kg) and the lost work (kJ/kg) for this process using the van der Waals equation of state. The ambient temperature is 293K, kinetic and potential energy changes are neglected. Cpig H= 49.24 kJ/kmolK Cpig S= 49.16 kJ/kmolK