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15th July 2022 22:14
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Avalon Member
Harnessing kinetic energy of rotating mass.
Can a 25W motor turn 100W generator to produce usable electric energy?
According to the law of energy conservation is impossible.
But the law of energy conversation law only applies to the close system where there is no exchange of energy with other systems.
Creating an open system does not violate the law of energy conservation. Will it?
Let's assume there is a 25W motor connected to 100W generator.
To turn the generator using 25W motor requires at least 5 times greater torque than the motor's static torque. It requires 75W energy or maybe more.
To create a open system, we need to add two components.
Energy measurement unit and energy supply unit to the motor and generator assembly.
The energy supply unit will turn the motor until the motor starts spinning the generator shaft.
As the motor spins faster and faster, magnitude of dynamic torque from the motor and the generator reduces. Once it reaches the optimal rotation speed of the generator that produces around 90W of electric power, the input energy for the system becomes minimal (I estimate it's less than 25W due to the inertia of rotating mass effect).
This motor generator will produce 65W electric energy running by itself.
Adding extra rotating mass, i.e. metal flywheel to the system will reduce input energy consumption also.
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16th July 2022 19:18
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