The rotation of a horizontal axis wind turbine around its tower or vertical axis.
An octagonal shaped shelter that originated in Mongolia, and traditionally made from leather or canvas for easy transportation.
An area within the interior space of a building, such as an individual room(s), to be cooled, heated, or ventilated. A zone has its own thermostat to control the flow of conditioned air into the space.
The combining of rooms in a structure according to similar heating and cooling patterns. Zoning requires using more than one thermostat to control heating, cooling, and ventilation equipment.