The rate of heat production by a steady current in any part of an electrical circuit that is proportional to the resistance and to the square of the current, or, the internal energy of an ideal gas depends only on its temperature.

A WECS that is used to grind grain, and that typically has a high-solidity rotor; commonly used to refer to all types of WECS.

The pressure of the steam or water in a boiler as measured; usually expressed in pounds per square inch gauge (psig).

The maximum possible voltage across a photovoltaic cell; the voltage across the cell in sunlight when no current is flowing.

The amount of BTU's/hour or kW's produced by a heating system from the burning of a fuel.

A charge for the maximum rate at which energy is used during peak hours of a billing period. That part of a utility service charged for on the basis of the possible demand as distinguished from the energy actually consumed.

A building energy auditing technique used to determine and/or locate air leaks in a building shell or envelope.

A type of insulation, composed of small diameter pink, yellow, or white glass fibers, formed into blankets or batts, or used in loose-fill and blown-in applications.

A device for converting a solid fuel to a gaseous fuel.

The first law states that energy can not be created or destroyed; the second law states that when a free exchange of heat occurs between two materials, the heat always moves from the warmer to the cooler material.

Waste material from households and businesses in a community that is not regulated as hazardous.

The prescribed level of pollutants allowed in outside or indoor air as established by legislation.

A type of wind turbine in which the axis of rotation is perpendicular to the wind stream and the ground.

Draft that is caused by temperature differences in the air.

The storage of heat energy during utility off-peak times at night, for use during the next day without incurring daytime peak electric rates.

A material used to seal gaps around windows and exterior doors.

A drag-type wind machine that can react to wind from any direction.

A material that can be used to store thermal energy as latent heat. Various types of materials have been and are being investigated such as inorganic salts, eutectic compounds, and parrafins, for a variety of applications, including solar energy storage ( ...

These brines are hot (300 F to 400 F) (149 C to 204 C) pressurized waters that contain dissolved methane and lie at depths of 10,000 ft (3048 m) to more than 20,000 ft (6096 m) below the earth's surface. The best known geopressured reservoirs lie along th ...

Gasoline fuel additives such as ethanol, ETBE, or MTBE that add extra oxygen to gasoline to reduce carbon monoxide pollution produced by vehicles.