The damping of interior temperature fluctuations by massive construction.

The percentage of a building's seasonal energy requirements that can be met by a solar energy device(s) or system(s).

Usually refers to ethanol to 160 to 200 proof.

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

see Solar Spectrum above.

A type of window glazing films used to block the infrared (heat) portion of the solar spectrum but admit a higher portion of visible light.

The quantity of heat that a cooling appliance is capable of removing from a room in one hour.

A solar power station investigated by NASA that entailed a satellite in geosynchronous orbit that would consist of a very large array of solar photovoltaic modules that would convert solar generated electricity to microwaves and beam them to a fixed point ...

Those gases, such as water vapor, carbon dioxide, tropospheric ozone, methane, and low level ozone that are transparent to solar radiation, but opaque to long wave radiation, and which contribute to the greenhouse effect.

One layer of glass in a window frame. It has very little insulating value (R-1) and provides only a thin barrier to the outside and can account for considerable heat loss and gain.

An interior or exterior movable panel that operates on hinges or slides into place, used to protect windows or provide privacy.

A measure of light quality. The maximum CRI value of 100 is given to natural daylight and incandescent lighting. The closer a lamp's CRI rating is to 100, the better its ability to show true colors to the human eye.

A type of insulation that is molded or expanded to produce coarse, closed cells containing air. The rigid cellular structure provides thermal and acoustical insulation, strength with low weight, and coverage with few heat loss paths. Often used to insulat ...

The weight of water vapor, per unit weight of dry air.

Thermal energy that is used in agricultural and industrial operations.

A unit for the quantity of electricity transported in 1 second by a current of 1 ampere.

A fuel gas with a heating value between 90 and 200 Btu per cubic foot.

A type of water heater in which heated water is stored within the tank. Hot water is released from the top of the tank when a hot water faucet is turned. This water is replaced with cold water that flows into the tank and down to just above the bottom pla ...

A steady-state fermentation process.

A device that converts high-pressure steam, produced in a boiler, into mechanical energy that can then be used to produce electricity by forcing blades in a cylinder to rotate and turn a generator shaft.