Question

Hot air at $66^{0}C$ is cooled up to $38^{0}C$ by means of cold air entering at $15.5^{0}C$ Mass flow rates of hot and cold air are 1.25 kg/s and 1.6kg/s respectively sp. heat of hot and cold air = 1.05kJ/kg k $U=80 w/m^{2}k$ Find the area of the heat exchanger for parallel flow configuration. If the same exchanger is operated in counter flow mode, find the exit temperatures of both the fluids.

Answer 1

Sorry I don't know that so sorry