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Air-conditioner sizes are often given as "tons" of cooling, where 1 ton of cooling equals 12,000 BTU/h (3.5 kW). 1 ton of cooling equals the amount of power that needs to be applied continuously over a 24-hour period to melt 1 ton of ice. The annual cost of electric energy consumed by an air conditioner may be calculated as follows:
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]
The levelized cost of electricity (LCOE) is a metric that attempts to compare the costs of different methods of electricity generation consistently. Though LCOE is often presented as the minimum constant price at which electricity must be sold to break even over the lifetime of the project, such a cost analysis requires assumptions about the value of various non-financial costs (environmental ...
The $51 estimate was lower than the European Union's carbon price but higher than the Chinese carbon price. [53] Additionally, the administration set the social cost of methane at $1,500 per tonne. [54] In March 2022, the court allowed the Biden administration to use the social cost of carbon, thus reversing a previous court ruling. [55]
In 2024 the social cost of carbon ranges to over $1000/tCO 2, [6] while the carbon pricing only ranges to about $160/tCO 2. [7] From a technological cost perspective, the 2018 IPCC report suggested that limiting global warming below 1.5 °C requires technology costs around $135 to $5500 in 2030 and $245 to $13000/tCO2 in 2050. [8]
This is an accepted version of this page This is the latest accepted revision, reviewed on 23 January 2025. U.S. state This article is about the U.S. state. For other uses, see Arizona (disambiguation). State in the United States Arizona State Flag Seal Nicknames: The Grand Canyon State; The Copper State; The Valentine State Motto: Ditat Deus ('God enriches') Anthem: "The Arizona March Song ...
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