| Energy Weighted Air Density | |
The energy-weighted air density is the air density multiplied by the wind power density, divided by the mean wind power density. Windographer calculates the energy-weighted air density in a particular time step using the following equation:
where: | ||
| rew | is the energy-weighted air density in that time step [kg/m3] | |
| r | is the actual air density in that time step [kg/m3] | |
| WPD | is the wind power density in that time step [W/m2] | |
| WPD | is the simple mean wind power density [W/m2] |
The mean energy-weighted air density provides an alternative measure of the average air density, more relevant to wind energy potential since each time step is given a weight equal to its importance in terms of potential wind power production.
The mean and mean-of-monthly-means, min, max, and standard deviation of the energy-weighted air density appears in the Environmental Summary table on the Tables window, and you can create a calculated column containing the energy-weighted air density in the Data Columns tab of the Configure Dataset window.
See also