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It was originally defined as the rate of heat transfer that results in the freezing or melting of 1 short ton (2,000 lb; 907 kg) of pure ice at 0 °C (32 °F) in 24 hours. [1] [2] The modern definition is exactly 12,000 Btu IT /h (3.516853 kW). Air-conditioning and refrigeration equipment capacity in the U.S. is often specified in "tons" (of ...
The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work (energy) required. [ 1 ] [ 2 ] Higher COPs equate to higher efficiency, lower energy (power) consumption and thus lower operating costs.
An air conditioning system, or a standalone air conditioner, provides cooling and/or humidity control for all or part of a building. Air conditioned buildings often have sealed windows, because open windows would work against the system intended to maintain constant indoor air conditions.
These systems range from a conceptual system of perfect displacement, which removes and replaces all air in a space, to a short circuit flow in which very little of the existing air is replaced. [2] The actual amount of air changed in a well mixed ventilation scenario will be 63.2% after 1 hour and 1 ACH. [3]
An evaporative cooler (also known as evaporative air conditioner, swamp cooler, swamp box, desert cooler and wet air cooler) is a device that cools air through the evaporation of water. Evaporative cooling differs from other air conditioning systems, which use vapor-compression or absorption refrigeration cycles.
A multistorey car park in Hradec Králové, Czech Republic The interior of a shopping mall's parking garage in Kungälv, Sweden. A multistorey car park [1] [2] (Commonwealth English) or parking garage (American English), [1] also called a multistorey, [3] parking building, parking structure, parkade (mainly Canadian), parking ramp, parking deck, or indoor parking, is a building designed for ...
The Chevrolet Silverado/GMC Sierra 3500, Ford F-350, and Ram 3500 are known as "one ton" pickups. [26] Similar schemes exist for vans and SUVs (e.g. a 1-ton Dodge Van or a 1 ⁄ 2-ton GMC Suburban), medium duty trucks (e.g. the 1 1 ⁄ 2-ton Ford F-550) and some military vehicles, like the ubiquitous deuce-and-a-half.
Potential benefits associated with shared ground heat exchange. A shared ground array comprises connected ground heat exchangers for use by more than one home. [1] They can deliver low-carbon heating where individual ground-coupled heat exchangers are not viable, such as in terraced housing with little outside space.