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wolram
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If i had a driven flywheel with a hollow outer rim, and could rapidly fill it with water while in motion, would i gain any energy?
Jeff Reid said:Assume that the flywheel has water in it but it's walls are frictionless so the water isn't moving. Then assume vanes in the flywheel are deployed to accelerate the water up to flywheel speed. Ignoring losses to heat, it's a closed system, so energy and momentum are preserved.
A water-filled flywheel works by using the kinetic energy of water to store and release energy. The flywheel consists of a large spinning wheel filled with water, which is connected to a motor. When the motor spins the flywheel, the water inside also begins to spin, storing energy in the process. This stored energy can then be released as needed to power various devices.
One of the main advantages of a water-filled flywheel is its ability to store large amounts of energy in a small space. Additionally, it is a more environmentally friendly option compared to other energy storage methods, as it does not require the use of harmful chemicals or produce emissions. It also has a longer lifespan and can be easily scaled up or down depending on energy needs.
One limitation of a water-filled flywheel is its weight. The flywheel itself can be quite heavy due to the amount of water it holds, which can make transportation and installation challenging. Another limitation is the potential for leaks, which can be costly and time-consuming to repair. Additionally, flywheels are not suitable for long-term energy storage, as they can lose energy over time due to friction and evaporation.
Compared to other energy storage methods such as batteries or compressed air, a water-filled flywheel has a higher energy density, meaning it can store more energy in a smaller space. It also has a longer lifespan and can withstand frequent charging and discharging without degradation. However, it may not be suitable for all energy storage needs and should be used in conjunction with other methods for a more efficient and reliable energy system.
Yes, there are several real-world applications for a water-filled flywheel. Some examples include using it to store renewable energy from sources like solar or wind power, providing backup power during blackouts or emergencies, and balancing the energy grid by providing a stable supply of energy. It can also be used in various industries such as transportation, manufacturing, and agriculture to power machinery and equipment.