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.

The point or outdoor temperature where the heating capacity of a heat pump matches the heating requirements of a building.

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

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 ...

A unit of electrical capacitance; the capacitance of a capacitor between the plates of which there appears a difference of 1 Volt when it is charged by one coulomb of electricity.

A profile of how the wind speed changes with height above the surface of the ground or water.

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 thin sheet of material (metal) of a heat exchanger that conducts heat to a fluid.

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

A device mounted in the vent connector that closes the vent when the heating unit is not firing. This traps heat inside the heating system and house rather than letting it draft up and out the vent system.

The unit price and quantity to which it applies as specified in a rate schedule or contract.

The visible portion of the electromagnetic spectrum with wavelengths from 0.4 to 0.76 microns

Fuel gas with a heating value of between 200 and 300 Btu per cubic foot.

The physically connected generation, transmission, and distribution facilities and components operated as a unit.

A device for converting mechanical energy to electrical energy.

The natural, convective movement of air or water due to differences in temperature. In solar passive design a thermosyphon collector can be constructed and attached to a house to deliver heat to the home by the continuous pattern of the convective loop (o ...

A type of (geothermal) heat pump that uses well (ground) or surface water as a heat source. Water has a more stable seasonal temperature than air thus making for a more efficient heat source.

An incorporated right, liberty, privilege, or use of another entity's property, distinct from ownership, without profit or compensation; a right-of-way.

A type of turbine in which combusted, pressurized gas is directed against a series of blades connected to a shaft, which forces the shaft to turn to produce mechanical energy.

The measure of seasonal or annual efficiency of a heat pump operating in the heating mode. It takes into account the variations in temperature that can occur within a season and is the average number of Btu of heat delivered for every watt-hour of electri ...