Backup Energy System
- A reserve appliance; for example, a standby generator for a home or commercial building.
Energy terms . 2014.
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Backup fuel — In a central heat pump system, the fuel used in the furnace that takes over the space heating when the outdoor temperature drops below that which is feasible to operate a heat pump. U.S. Dept. of Energy, Energy Information Administration s… … Energy terms
energy — /en euhr jee/, n., pl. energies. 1. the capacity for vigorous activity; available power: I eat chocolate to get quick energy. 2. an adequate or abundant amount of such power: I seem to have no energy these days. 3. Often, energies. a feeling of… … Universalium
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