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In the United States, 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, a trade association, in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [1]
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]
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Heating, cooling, and combustion are often measured in BTUs per hour or refrigeration tons, and powerplant efficiency is often measured by its "heat rate", in BTU per kilowatt hour. The rated power of engines, electric motors, and power plant steam turbines is frequently measured in horsepower. Power plant output is generally expressed in ...
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