er. The totally free surface that the upper reservoir is 45 m greater than the surface ar of the reduced reservoir. If the flow rate of water is measured to it is in 0.03 m3/s, identify the irreversible head loss of the system and the shed mechanical power throughout this process. Take the thickness of water to it is in 1000 kg/m3.

You are watching: Water is pumped from a lower reservoir to a higher reservoir



According come the details presented, the is crucial to take into account the principles related come mass flow, particular potential energy and also the strength that will recognize the total work done in the system.

By meaning we understand that the readjust in mass circulation is provided by

*

*

Remember the the Discharge is defined as Q = AV, where A is the Area and V is the speed.

Substituting v the worths we have we recognize that the mass flow is identified by

*

*

To calculation the strength we require to achieve the certain potential energy, i m sorry is given by

*

*

*

So the power needed to supply the water into the warehouse tank would certainly be

*

*

*

Finally the mechanical power that is convert to heat energy because of friction impacts is:

*

*

*

Therefore the mechanical power as result of friction impact is 6.77kW


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