Презентация на тему Energy generation

is electric current that is used as a power

This electric current is generated in a power plant, and then sent out
over a power grid to your homes, and ultimately to your power outlets.

Today we will explore electrical energy, better known as electricity

current generation - whether from fossil fuels, nuclear, renewable

Simple Equation For Electricity Generation

generated unless the magnetic field is moving
relative

If you place a magnet and a conductor (copper wire), in a room together
there will be no electric current generated.

This is because motion, from our equation for electricity, is missing!

in power plants contain, magnets
and copper wire that

The major problem in
electricity generation
Is where does the
Motion come from
that keeps the
copper wire and
magnets moving
relative to one
another.

In this case, wind power applies a force to the blades that turns them.
The spinning blades, spin an armature that turns the copper wire
relative to the magnetic field. As long as the blades spin, electricity
will be generated!

Resistance losses are smallest at high voltages and low

Electricity Transmission

that was generated by
generators in the power
plant

The electric current,
running through the
copper wire causes
the armature to spin
which is how most
motors generate
motion.

Conversion from potential energy of
water to electric

-Hydroelectric projects in the United
States have rated capacities from
950 – 6480 MW

The use of Water Power is much
greater in some other countries.
Norway obtains 99% of its electricity
from water power. Nepal, Brazil, and
New Zealand are close seconds.

to 10% of US electricity
- Large fluctuations in output

sun energy to either boil water or directly converts

Ocean Thermal Energy Conversion – uses temperature differences
between different depths of ocean water to drive a heat engine. Working
fluid is ammonia which is gas at room temperature.

-Biomass Energy: Municipal Solid Waste – burning wastes to drive heat
engines

Geothermal Energy – based on naturally occurring heat in the Earth in the
Earth due to radioactive decay

Tidal Energy – uses the gravitational pull of the moon on our oceans to
drive turbines