Energy efficiency

Energy efficiency

Industry: Energy

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Energy efficiency

Band gap energy

Energy; Energy efficiency

The amount of energy (in electron volts) required to free an outer shell electron from its orbit about the nucleus to a free state, and thus promote it from the valence to the conduction level.

Instantaneous efficiency of a solar collector

Energy; Energy efficiency

The amount of energy absorbed (or converted) by a solar collector (or photovoltaic cell or module) over a 15 minute period.

Reflectance

Energy; Energy efficiency

The amount (percent) of light that is reflected by a surface relative to the amount that strikes it.

Firing rate

Energy; Energy efficiency

The amount of BTUs/hour or kWs produced by a heating system from the burning of a fuel.

Design cooling load

Energy; Energy efficiency

The amount of conditioned air to be supplied by a cooling system; usually the maximum amount to be delivered based on a specified number of cooling degree days or design temperature.

The round or rectangular tube(s), generally constructed of sheet metal, fibreglass board, or a flexible plastic-and-wire composite, located within a wall, floor, and ceiling that distributes heated ...