A device for optimizing the anaerobic digestion of biomass and/or animal manure, and possibly to recover biogas for energy production. Digester types include batch, complete mix, continuous flow (horizontal or plug-flow, multiple-tank, and vertical tank), ...

A cell produces electric energy by the galvanic oxidation of carbon; commonly used in household appliances.

The maximum load that a generating unit, power plant, or other electrical apparatus can carry under specified conditions for a given period of time, without exceeding its approved limits of temperature and stress.

The pressure of the air at sea level; one standard atmosphere at zero degrees centigrade is equal to 14.695 pounds per square inch (1.033 kilograms per square centimeter).

Power generated by a utility unit that operates at a very high capacity factor.

The device in an air conditioner that distributes the filtered air from the return duct over the cooling coil/heat exchanger. This circulated air is cooled/heated and then sent through the supply duct, past dampers, and through supply diffusers to the liv ...

A turbine in which the flow of a steam or gas is essentially parallel to the rotor axis.

A vessel or tank where heat produced from the combustion of fuels such as natural gas, fuel oil, or coal is used to generate hot water or steam for applications ranging from building space heating to electric power production or industrial process heat.

Any number of solar photovoltaic modules or solar thermal collectors or reflectors connected together to provide electrical or thermal energy.

A reserve appliance; for example, a standby generator for a home or commercial building.

A type of ceiling and roof assembly that has no attic.

The load that a power generation unit or other electrical apparatus or heating unit is rated by the manufacture to be able to meet or supply.

The minimum demand experienced by a power plant.

An electrical device that adjusts the leading current of an applied alternating current to balance the lag of the circuit to provide a high power factor.

A method of growing large size, high quality semiconductor crystal by slowly lifting a seed crystal from a molten bath of the material under careful cooling conditions.

The incremental cost to an electric power producer to generate or purchase a unit of electricity or capacity or both.

A type of radiant heating system where the radiator is located along an exterior wall where the wall meets the floor.

The difference between net electrical system capability and system maximum load requirements (peak load); the margin of capability available to provide for scheduled maintenance, emergency outages, system operating requirements and unforeseen loads.

Primitive plants, usually aquatic, capable of synthesizing their own food by photosynthesis.

A type of air compressor in which air is compressed in a series of stages as it flows axaily through a decreasing tubular area.