The apparent angle of the sun north or south of the eath's equatorial plane. The earth's rotation on its axis causes a daily change in the declination.

An axail flow fan mounted in a section of duct to move conditioned air.

The process of storing, or converting energy from one form to another, for later use; storage devices and systems include batteries, conventional and pumped storage hydroelectric, flywheels, compressed gas, and thermal mass.

Restrictions on the use of a property.

This committee has oversight over the generation and marketing of electric power from federal water projects by federally charted or Federal RPM authorities, measures and matters concerning water resources planning, compacts relating to use and apportionm ...

A turbine that has a runner with attached blades similar to a propeller used to drive a ship. As water passes over the curved propeller blades, it causes rotation of the shaft.

The process by which sunlight directly enters a building through the windows and is absorbed and stored in massive floors or walls.

A tax credit granted for specific types of investments.

The lower or net heat of combustion for a fuel that assumes that all products of combustion are in a gaseous state. (See Net Heating Value below.)

The time of the day, at a specific location, when the sun reaches its highest, apparent point in the sky; equal to true or due, geographic south.

A deposition process whereby heat is used to break molecules into elemental sources that are then spray deposited on a substrate.

The potentially useful byproducts of ethanol fermentation process.

The air that is supplied to the combustion chamber of a furnace.

A window located on the roof of a structure to provide interior building spaces with natural daylight, warmth, and ventilation.

A measure of the unavailable or unusable energy in a system; energy that cannot be converted to another form.

A source of power (electricity) that can displace power from another source so that source's power can be transmitted to more distant loads.

see Peak Watt.

The damping of interior temperature fluctuations by massive construction.

The ratio of the sum of the noncoincidental maximum demands of two or more loads to their coincidental maximum demands for the same period.

The mean distance a free electron or hole moves before recombining with another hole or electron.