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Simulation Results

The stream conditions for the pump are shown in Figure 3.

Figure 3: Stream conditions

Answer

With the 10% efficient pump, the outlet temperature of the water is  285 °F.

Discussion

This example shows that  pumping liquid can increase their temperature. In this case, the pump was only 10%  efficient and it caused 15 °F in the temperature of the water. The less efficient a pump is, the greater the increase in the temperature of the fluid being pumped. This arise because in a low efficient pump, more energy is need to pump the liquid to get the same outlet pressure of a more efficient pump. So the extra energy get transferred to the fluid.