Liquid propane (C3H8) enters a combustion chamber at 25oC, 100 kPa at a rate of 0.5 kg/min where it is mixed and burned with 150% theoretical air which enters at 10oC. Only 90% of C is converted to CO2, the rest to CO while the hydrogen burns completely into H2O. The products leave at 1000 K and 100 kPa. Determine
(a) The mass flow rate of air,
(b) The rate of heat transfer and
(c) The rate of entropy generation assuming the surroundings to be at 300 K.