I'm not going to go through the formulas for the Turbulent flows.

Those are in the textbook that you have for the

course as well as most fluid power [SOUND] mechanic's books.

So let's take a look at an example.

Now, wind turbines are starting to use hydraulic,

or fluid power systems to carry the power from.

The top down to the bottom, and using a, hydraulic pump

at the top to, convert from the wind energy to mechanical energy.

[COUGH] So here on the left we've got a, schematic diagram

of a wind, turbine, so here's the, propeller blades up at top.

And they are spinning a, hydraulic pump which

is shooting pressurized fluid down to the base and

then down at the base you have a, hydraulic

motor that's turning a generator that creates the electricity.

Some of these wind turbines can be very

tall so current wind turbines can be 100 meters.

Tall or 100 meters long, so which means that

you've got these, conduits that are 100 meters long.

And so it's, important to know what

the pressure drop is, across this pipe, because

that's wasted pressure, or wasted, power that's

not going to be used to generate the, electricity.

So in this example, we've got a, a three megawatt wind turbine.