How much falling water to generate 3KW

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SUMMARY

To generate 3 kilowatts (KW) of electrical energy using falling water, a height drop of 5 meters is considered. The potential energy change can be calculated using the formula mgh, where g is 9.81 m/s². For a 5-meter drop, the energy produced is 49.05m joules. To determine the mass of water required to achieve 3 KW, one must convert the energy output into joules per second, as 3 KW equals 3000 joules per second.

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  • Understanding of potential energy calculations
  • Familiarity with electrical power concepts (KW, ACV, A)
  • Basic knowledge of turbine generator efficiency
  • Knowledge of gravitational acceleration (9.81 m/s²)
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  • Calculate the mass of water needed for 3 KW using the potential energy formula
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multivits
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Hello Forum
How much falling water would I need to potentially generate 3 KWatts (240 ACV @ 13 A) of electrical energy?

Assume we have 100% efficient electrical turbine generator.

Our location is residential so the height drop is restricted to say 5 meters max, the lower the better.


TIA

Multivits
 
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The change in potential energy in a 5 m height is mgh= m(9.81)(5)= 49.05m joules. How many Joules are there in 3 kw?
 

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