Energy efficiency

Energy efficiency

Industry: Energy

Add a new term

Contributors in Energy efficiency

Become a Contributors

Energy efficiency

Heat rate

Energy; Energy efficiency

The ratio of fuel energy input as heat per unit of net work output; a measure of a power plant thermal efficiency, generally expressed as Btu per net kilowatt-hour.

Fuel efficiency

Energy; Energy efficiency

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

Ballast factor

Energy; Energy efficiency

The ratio of light output of a fluorescent lamp operated on a ballast to the light output of a lamp operated on a standard or reference ballast.

Fill factor

Energy; Energy efficiency

The ratio of a photovoltaic cell's actual power to its power if both current and voltage were at their maxima. A key characteristic in evaluating cell performance.

Power factor (PF)

Energy; Energy efficiency

The ratio of actual power being used in a circuit, expressed in watts or kilowatts, to the power that is apparently being drawn from a power source, expressed in volt-amperes or kilovolt-amperes.