Water is pumped from a lower reservoir to a higher reservoir by a pump that provides 20 kW of shaft power.

Question

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lizawr

Asked: April 11, 20222022-04-11T19:03:34+00:00 2022-04-11T19:03:34+00:00In: Physics

Water is pumped from a lower reservoir to a higher reservoir by a pump that provides 20 kW of shaft power.

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Water is pumped from a lower reservoir to a higher reservoir by a pump that provides 20 kW of shaft power. The free surface of the upper reservoir is 46 m higher than that of the lower reservoir. If the flow rate of water is measured to be 0.03 m³/s, determine mechanical power that is converted to thermal energy during this process due to frictional effects.

♦ Relevant knowledge

The term thermal energy refers to the energy that the system or object because of the motion of molecules or the atoms. When particles move rapidly and the system or object is able to absorb a significant amount in thermal energy. If they’re moving slow it’s not as much thermal energy. The term “heat” refers to the movement of energy in thermal form from a higher concentration an lower one; or moving from a hotter item as well as system cooler one. Since heat and thermal energy are closely linked the term thermal energy is commonly called “heat energy.”