The flow of water entering a pipe is 0.25 kg / s and its temperature is 20 ° C. The diameter of the pipe is 20 mm and the wall temperature of the pipe is 100 ° C. If the average value of the heat transfer coefficient is 700 W / m C, what is the length of the pipe required to raise the water temperature to 80 ° C?

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Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.