3) A pump with an efficiency of mm% is used to pump water from a tank (stationary water inside) at the ground to an open swimming pool (atmospheric pressure) at the top of a residence, where surface of the swimming pool has an elevation of 35m. The pressure in the tank in the ground is measured to be 2nn kPa absolute. The electric consumption of the pump is measured to be 1kW. What is the mass flow rate of the

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suppose that, the last 2 digits of student number is 57

3) A pump with an efficiency of mm% is used to pump water from a tank (stationary water inside) at the
ground to an open swimming pool (atmospheric pressure) at the top of a residence, where surface of the
swimming pool has an elevation of 35m. The pressure in the tank in the ground is measured to be 2nn kPa
absolute. The electric consumption of the pump is measured to be 1kW. What is the mass flow rate of the
pump?
Write the general first law of thermodynamics for an open system between two points, reduce it to steady-
state mechanical energy equation for incompressible flows (like water). Take atmospheric pressure to be 100
kPa absolute.
Note: mm is the last 2 digits of your student number. nn=mm-65
(If mm is smaller than 65, then do it like this: e.g. mm= 15, nn= 15-65= -50, “2nn" kPa= 200-50= 150 kPa)
Transcribed Image Text:3) A pump with an efficiency of mm% is used to pump water from a tank (stationary water inside) at the ground to an open swimming pool (atmospheric pressure) at the top of a residence, where surface of the swimming pool has an elevation of 35m. The pressure in the tank in the ground is measured to be 2nn kPa absolute. The electric consumption of the pump is measured to be 1kW. What is the mass flow rate of the pump? Write the general first law of thermodynamics for an open system between two points, reduce it to steady- state mechanical energy equation for incompressible flows (like water). Take atmospheric pressure to be 100 kPa absolute. Note: mm is the last 2 digits of your student number. nn=mm-65 (If mm is smaller than 65, then do it like this: e.g. mm= 15, nn= 15-65= -50, “2nn" kPa= 200-50= 150 kPa)
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