1. The problem statement, all variables and given/known data Air is to be compressed from 120 kPa and 310 K to 700 kPa and 430 K. A heat loss of 20 kj/kg occurs during the compression process. For air: cv=0.7165 kj/kg.K and R=0.287 kj/kg.K . A) Neglecting kinetic energy changes determine the power input required for a mass flow rate of 90 kg/min. 3. The attempt at a solution m = 90 kg/min = 1.5kg/s Apply 1st law of thermodynamics - energy conservation Ein = Eout Win + Mh1 = Qout + mh2 Therefore: Win + mCpT1 = Qout + mCpT2 Cp = 1.005 Kj/Kg.K Win + 1.5kg X 1.005 KJ/Kg.K X 310K = 20KJ/Kg/K + 1.5Kg/s X 1.005 KJ/Kg.K X 430K= Win = 201Kw. Is this correct?