Fuels formed in the ground from the remains of dead plants and animals. It takes millions of years to form fossil fuels. Oil, natural gas, and coal are fossil fuels.

The supportive structure of a building.

Fuel Quantity Indicator Floristic Quality Index (ecological index) FQI Fuel Quantity Indicator FQI Federal Quality Institute FQI Fibre Quality Index (textiles) FQI Food Quality Indicator FQI Final Quality Inspection (Mazda Motor Corp.) ...

An electric motor rated at less than one horse power (hp).

The outer casing of a window that sits in a designated opening of a structure and holds the window panes in place.

The structural materials and elements used to construct a wall.

A type of hydropower turbine that contains a runner that has water passages through it formed by curved vanes or blades. As the water passes through the runner and over the curved surfaces, it causes rotation of the runner. The rotational motion is transm ...

A registered trademark for a cholorflourocarbon (CFC) gas that is highly stable and that has been historically used as a refrigerant.

The number of cycles through which an alternating current passes per second; in the U.S. the standard for electricity generation is 60 cycles per second (60 Hertz).

An optical device for concentrating light that is made of concentric rings that are faced at different angles so that light falling on any ring is focused to the same point.

The energy lost from the movement of a fluid in a conduit (pipe) due to the disturbances created by the contact of the moving fluid with the surfaces of the conduit, or the additional pressure that a pump must provide to overcome the resistance to fluid f ...

Any material that can be burned to make energy.

An electrochemical device that converts chemical energy directly into electricity.

The ratio of heat produced by a fuel for doing work to the available heat in the fuel.

Usually refers to ethanol to 160 to 200 proof.

Any liquid petroleum product burned for the generation of heat in a furnace or firebox, or for the generation of power in an engine. Domestic (residential) heating fuels are classed as Nos. 1, 2, 3; Industrial fuels as Nos. 4, 5, and 6.

The amount of fuel necessary to generate one kilowatt-hour of electricity.

The amount of power density in sunlight received at the earth's surface at noon on a clear day (about 1,000 Watts/square meter).

Plant-like organisms with cells with distinct nuclei surrounded by nuclear membranes, incapable of photosynthesis. Fungi are decomposers of waste organisms and exist as yeast, mold, or mildew.

The process of forcing, either manually or automatically, a wind turbine's blades out of the direction of the wind in order to stop the blades from turning.