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

A raw material that can be converted to one or more products.

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.

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

A battery-powered electrically driven vehicle.

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 generic term for an electrical conductor.

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

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

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.

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

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

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

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.

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.