Steve enjoys skiing in the winter time. However, Steve is a wimp and only likes to ski very slowly down the bunny trails. He sees everyone around him waxing the
bottom of their skis, but he refuses. He won't wax his skis because he has studied
physics and knows waxing will

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/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.