afue
1AFUE — an abbreviation for annual fuel utilization efficiency, a measure of the efficiency of a gas furnace. The rating is designed to represent the percentage of the fuel energy actually delivered as heat energy, averaged over the course of a… …
2AFUE — (Annual Fuel Utilization Efficiency) A measure of heating efficiency, in consistent units, determined by applying the federal test method for furnaces. This value is intended to represent the ratio of heat transferred to the conditioned space… …
3Annual Fuel Utilization Efficiency — (AFUE) The measure of seasonal or annual efficiency of a residential heating furnace or boiler. It takes into account the cyclic on/off operation and associated energy losses of the heating unit as it responds to changes in the load, which in… …
4Annual fuel utilization efficiency — The annual fuel utilization efficiency (AFUE; pronounced A Few ) is a thermal efficiency measure of combustion equipment like furnaces, boilers, and water heaters. The AFUE differs from the true thermal efficiency in that it is not a steady state …
5Condensing boiler — A condensing boiler utilizes the latent heat of water produced from the burning of fuel, in addition to the standard sensible heat, to increase its efficiency. Contents 1 Principles of work 2 Usage 3 Efficiency 4 …
6Furnace — For other uses, see Furnace (disambiguation). Industrial Furnace from 1907 A furnace is a device used for heating. The name derives from Latin fornax, oven. In American English and Canadian English, the term furnace on its own is generally used… …
7Fuel efficiency — is a form of thermal efficiency, meaning the efficiency of a process that converts chemical potential energy contained in a carrier fuel into kinetic energy or work. Overall fuel efficiency may vary per device, which in turn may vary per… …
8Energy conservation — This article is about decreasing energy consumption. For the law of conservation of energy in physics, see Conservation of energy. Sustainable energy …
9Forced-air — A Forced air or Warm air heating system is one which uses air as its heat transfer medium. These systems use ductwork and vents as a means of air distribution. The return plenum carries the air from several large return grills (vents) to a… …
10Thermal efficiency — In thermodynamics, the thermal efficiency (eta {th} ,) is a dimensionless performance measure of a thermal device such as an internal combustion engine, a boiler, or a furnace, for example. The input, Q {in} ,, to the device is heat, or the heat… …
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