1. Water flows in a heated tube. The constant heat flux of 2 MW/m 2 is applied to the tube wall….

1. Water flows in a heated tube. The constant heat flux of 2
MW/m2 is applied to the tube wall. Water enters the tube at a rate
of 1 kg/s and an inlet temperature of 35 C. Find the water exit temperature.
The tube inside diameter is 2 cm and the tube length is 1 m.

2. Consider the flow of water in a heat flux controlled
channel. The channel length and diameter are D and L, respectively. The heat
flux at the wall varies linearly along the channel. Show that the water
temperature at the exit of the channel is given by:

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