The effect of cooling by the radiation of heat from a building to the night sky.

In a wind energy conversion system, to pitch the turbine blades so as to reduce their lift capacity as a method of shutting down the turbine during high wind speeds.

A thermal storage wall is a south-facing wall that is glazed on the outside. Solar heat strikes the glazing and is absorbed into the wall, which conducts the heat into the room over time. The walls are at least 8 in thick. Generally, the thicker the wall, ...

The amount of work accomplished by electrical power, usually measured in kilowatt-hours (kWh). One kWh is 1,000 Watts and is equal to 3,413 Btu.2.The energy of moving electrons.

A unit of measurement for the ability of a material to retard the diffusion of water vapor at 73.4 F (23 C). A perm, short for permeance, is the number of grains of water vapor that pass through a square foot of material per hour at a differential vapor p ...

The decomposition of organic material to alcohol, methane, etc., by organisms, such as yeast or bacteria, usually in the absence of oxygen.

A battery-powered electrically driven vehicle.

A registered trademark name for houses built with tires, aluminum cans, and earth.

A measure of the electrical resistance of a material equal to the resistance of a circuit in which the potential difference of 1 volt produces a current of 1 ampere.

The discomfort or interference with visual perception when viewing a bright object against a dark background.

A construction element that inhibits termites from entering building foundations and walls.

A generic term for an electrical conductor.

A device for converting continuous circular motion into reciprocating rectilinear motion.

A device that tracks the movement of the sun; used to orient solar concentrating systems.

The wind speed with 50 percent probability of occurring.

The quantity of heat necessary to raise the temperature of a specific mass of a substance by one degree.

A house built into the ground or slope of a hill, or which has most or all exterior surfaces covered with earth.

The sum of all the costs both recurring and nonrecurring, related to a product, structure, system, or service during its life span or specified time period.

The arrangement, proportion, and design of windows in a building.

A mechanical/electrical device used to pull air out of an interior space; usually located in the highest location of a building, in the ceiling, and venting to the attic or directly to the outside.