Question: Problem 3 . 2 Water is to be heated by flowing through a long tube where it is heated by electrical resistance. If the flow

Problem 3.2
Water is to be heated by flowing through a long tube where it is heated by electrical
resistance. If the flow-rate of the water is 0.3ms-1 the inside diameter of the tube is 10
mm , the heat flux from the resistance heater is 36kWm-2, and the water enters the tube
at 15C, calculate the length of the tube required for the water to exit the tube at 45C.
Problem 3 . 2 Water is to be heated by flowing

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