= Problem #2 Air (Sp 1.005 kJ/kg - K) is to be preheated by hot exhaust gases in a cross-flow heat ex- changer before it enter the furnace. The combustion gases (cp = 1.10 kJ/kg - K) enters at 160°C at a rate of 0.95 kg/s and leave at 95°C. Determine the rate of heat transfer from the exhaust gases. 545/15-4 15/45-K