Can you harvest electrical power from water pressure, or gravity?

Yes, you could use both of these forces to turn a turbine, which would turn a generator, to crease electricity. They would be very inefficient with today's technology though.

Can you harvest electrical power from water pressure, or gravity?

Is there any way to harvest electrical energy from the following?

1. Water pressure, deep under water

2. Gravity

To produce electric power, the source must have more energy than the consumer.

1. Water pressure, deep under water!

The source of the energy is the pressure of the water above the electric power plant. To produce electricity, the coils of wire in the electric generator or alternator must spin around the magnets.

The means water must flow through the turbine which spins the coils of wire in the generator or alternator. The water pressure on the cross sectional area of the turbine blades, provides the force that turns the turbine, which causes the coils of wire to spin around the magnet.

Pressure = Density of water * depth

At any specific depth the pressure in all directions is the same. So the force in all direction is the same. So the net force which would cause the water to flow through the turbine, which spins the coils of wire in the generator or alternator, which would produce electric energy = 0 N.

IF you placed a hose on the bottom of the ocean, the water pressure at the bottom of the oceans could not force water from the bottom to a height greater than the surface of the ocean.

Water flowing over a dam, drops a specific distance to the power plant, flows through the turbine, which spins the coils of wire in the generator or alternator, which produces electric energy; and the water run out of the power plant and into a river which is much lower than the bottom of the lake behind the dam, which is much higher that the river.

As water flows downhill, its potential energy is converted into kinetic energy, which provides the energy required to turn turbine, which provides the energy required to spin the coils of wire, which produces the electric energy for the consumers.

Water must flow from a high vertical position to a lower vertical position to convert its potential energy into kinetic energy which can be converted into electric energy by the generator or alternator.

Gravity is the acceleration of an object due to the force of attraction which is caused by the mass of the object and the mass of the earth.

Water falls from the higher vertical position to the lower vertical position due the force of attraction between the mass of the water and the mass of the earth.

However, initially the water must naturally be in a place which is higher than the power plant. Let’s assume that you haul the water up the mountain and then let it flow down the river to the dam where the power plant is. The vehicle that hauls the water uphill will use more energy as it transports the water uphill, than the same water can convert into mechanical energy of the turning turbine and coils of wire, which produce the electric energy!!

Water power can generate electricity if there is a pressure differential. Gravity alone does not drive a water turbine, it is the falling water that does. The same is true for water under pressure. The water has to be able to move freely from high pressure to low for it to drive a generator.

Deep under water, where there is high pressure, there is no movement from high to low pressure so it will not turn a turbine or generate any electricity.

For number 2 there is a method called "free energy".

Which really is not "Producing" energy, rather transfere energy from the gravity fields, the

unseeable forces, to gain electricity!

Because you cannot see the forcefields it's wrongly assumed to be "creating" energy.

Which, ofcourse, is silly and impossible..

1

Think Hoover Dam.

If you use the motor pump to fill the tank, you save nothing, & you'll lack pressure.