Air (cp = 1.005 KJ/Kg/c)is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enter the furnace. Air enter the heat exchanger at 95 kPa and 20c at a rate of 0.6 m3/s. the combustion gases (cp=1.10 Kj/Kg.c)enter at 160 c at a rate of 0.95 Kg/s and leave at 95 c Determine the rate of heat transfer to the air and its outlet temperature.