Carbon dioxide gas is being compressed in a closed system using a polytropic process. The gas is initially at 120kPa and 10C, and reaches a pressure of 800kPa during the compression. For a polytropic coefficient of n=1.2, determine the Specific work done on the gas 99.4kJ/kg Final gas temperature 388.2K Change on specific internal energy 72.8kJ/kg Find: Specific heat transfer to the system (ans: 26.6kJ/kg )