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Water at 15 C flows inside a tube at a rate of 0.03 kg/s. It is heated to 65 C with hot air entering

Water at 15 C flows inside a tube at a rate of 0.03 kg/s. It is heated to 65 C with hot air entering the shell at 140 C and a flow rate of 0.2 kg/s. The outside diameter of the tube is 2.5 cm and the overall heat transfer coefficient is 24 W/m-C. The tube makes 28 passes through the shell. Use the LMTD method to determine the tube length.

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