A balanced counter flow heat exchanger has a surface area of 20 m 2 and overall heat transfer coefficient of 20 W/m 2 –K. Air (C P = 1000 J/kg - K) entering at 0.4 kg/s and 280 K is to be preheated by the air leaving the system at 0.4 kg/s and 300 K. The outlet temperature (in K) of the heated air is ___

GATE Mechanical Engineering (ME) 2015 Shift 2 Solved Paper

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A balanced counter flow heat exchanger has a surface area of 20 m² and overall heat transfer coefficient of 20 W/m²–K. Air (C_P = 1000 J/kg - K) entering at 0.4 kg/s and 280 K is to be preheated by the air leaving the system at 0.4 kg/s and 300 K. The outlet temperature (in K) of the heated air is ___

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