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The efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER), which is defined by the Air Conditioning, Heating and Refrigeration Institute in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [61]
A key aspect of earth-air heat exchangers is the passive nature of operation and consideration of the wide variability of conditions in natural systems. Earth-air heat exchangers can be very cost effective in both up-front/capital costs as well as long-term operation and maintenance costs.
Central, "all-air" air-conditioning systems (or package systems) with a combined outdoor condenser/evaporator unit are often installed in North American residences, offices, and public buildings, but are difficult to retrofit (install in a building that was not designed to receive it) because of the bulky air ducts required. [32] (Minisplit ...
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.
Solar air conditioning, ... eliminate the cost of conventional air conditioning equipment. ... Geral de Depósitos in Lisbon with 1,579 square metres (17,000 sq ft) ...
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