# What is the wind power density?

## What is the wind power density?

Wind Power Density (WPD) is a quantitative measure of wind energy available at any location. It is the mean annual power available per square meter of swept area of a turbine, and is calculated for different heights above ground.

How is wind power density calculated?

Wind power density = 1/2 X air density of the site X wind speed cubed. Wind power density = (1/2 X air density of the site X wind speed cubed. )

How is wind power defined?

Wind power or wind energy describes the process by which the wind is used to generate mechanical power or electricity. Wind turbines convert the kinetic energy in the wind into mechanical power.

### What is air density in wind turbine?

Clearly the most important variable is windspeed. The area swept out by of the turbine is a constant and the density of air is generally taken as 1.225 kg/m^3, its value at sea level at 15 degrees C.

What is the ideal wind speed for turbines?

The wind turbines are designed to run when wind speeds range between nine and 56 miles per hour and are able to withstand wind speeds of up to 133 mph. Optimal output is achieved by the turbines during wind speeds of 31.3 mph, a speed that will rotate the blades on each turbine 16.8 times per minute.

What is the average solar wind density?

The average density of the Solar Wind is 4.0 atoms per cubic centimeter. Which is pretty small if you think about it, especially since the Solar Wind is responsible for deflecting the tails of comets away from the Earth. The Solar Wind is constantly being blown off from the Sun at speeds of about 400-500 km per second.

## How is wind energy obtained and used?

Wind energy is energy obtained from moving air. The motion results from the heating and cooling of the Earth; thus, wind energy is an indirect form of solar energy. It is normally turned into useful energy by the action of wind currents on moving surfaces such as the sails of a ship or the blades of a windmill.

What is wind potential energy?

Wind potential energy is measured in joules. A joule is defined as the work needed to produce one watt of power for a one second period. The basic theory behind wind potential energy states that wind at a certain speed and strength can create enough joules of energy to perform a certain task.