(Solved): Question 1 [10] Air is to be preheated by hot exhaust gases by means of a crossflow heat exchanger b ...
Question 1 [10] Air is to be preheated by hot exhaust gases by means of a crossflow heat exchanger before it enters a furnace. Air enters the heat exchanger at 101.3-kPa and 22°C and leaves at 120°C. If the exhaust gases enter the heat exchanger at 160°C at a rate of 0.95-kg/s and leaves at 95°C, determine the rate of heat transfer to the air, and the volume flow rate of the air to maintain the exit temperature. Take Cp for air as 1.005-kJ/kg.K and for the exhaust gases Cp = 1.10-kJ/kg.K. Air 101.3kPa 22°C 0.6 m³/s Exhaust gases 95°C
Question 1 [10] Air is to be preheated by hot exhaust gases by means of a crossflow heat exchanger before it enters a furnace. Air enters the heat exchanger at 101.3−kPa and 22∘C and leaves at 120∘C. If the exhaust gases enter the heat exchanger at 160∘C at a rate of 0.95kg/s and leaves at 95∘C, determine the rate of heat transfer to the air, and the volume flow rate of the air to maintain the exit temperature. Take Cp for air as 1.005−kJ/kg.K and for the exhaust gases Cp=1.10−kJ/kg.K.