A graph representing the relationship between the power available from the wind and the wind speed. The power from the wind increases proportionally with the cube of the wind speed.
The change in the power available in the wind due to changes in the wind speed or velocity profile; the windpower profile is proportional to the cube of the wind speed profile.
A row of dust, dirt, and dry leaves that have been swept together.
Found in a log, the separation along the growth ring circumference, caused by wind stress during the growth period of the tree.
Facing into the wind.
Building part, which is connected to, but leading away from the main structure.
A building structural element that is built onto a building's exterior along the inner edges of all the windows, and extending from the ground to the eaves. Wingwalls help ventilate rooms that have only one exterior wall which leads to poor cross ventilation. Wingwalls cause fluctuations in the natural wind direction to create moderate pressure differences across the windows. They are only effective on the windward side of the building.
Winter degree day
Term, given to days with a mean temperature below the set value, used to estimate heating fuel requirements. A unit of measure representing one degree of declination from a standard temperature in the average temperature of one day, used in determining fuel needed to maintain a given temperature between the mean and 65 degrees over 24 hours requirements.
Adapting a structure or machinery for operation or storage during cold weather by sealing cracks, putting up storm windows, etc. in a home or adding anti-freeze to machines.
A type of joint, made with hot lead, which was used to connect cast iron piping. It is not often used at this time.