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  2. Cost of electricity by source - Wikipedia

    en.wikipedia.org/wiki/Cost_of_electricity_by_source

    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 ...

  3. Comparison of commercial battery types - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_commercial...

    Cell chemistry Also known as Electrode Re­charge­able Com­mercial­ized Voltage Energy density Specific power Cost † Discharge efficiency Self-discharge rate

  4. Watt hour - Wikipedia

    en.wikipedia.org/?title=Watt_hour&redirect=no

    This page was last edited on 1 April 2020, at 21:36 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...

  5. Power-on hours - Wikipedia

    en.wikipedia.org/wiki/Power-On_Hours

    Power-on hours (POH) is the length of time, usually in hours, [1] that electrical power is applied to a device. A part of the S.M.A.R.T. attributes (originally known as IntelliSafe, before its introduction to the public domain on 12 May 1995, by the computer hardware and software company Compaq ), [ 2 ]

  6. Refrigerator - Wikipedia

    en.wikipedia.org/wiki/Refrigerator

    General Electric "Monitor-Top" refrigerator, introduced in 1927, priced at $525, with the first all-steel cabinet, designed by Christian Steenstrup [24] The first refrigerator to see widespread use was the General Electric "Monitor-Top" refrigerator introduced in 1927, so-called, by the public, because of its resemblance to the gun turret on ...

  7. Watt-hours - Wikipedia

    en.wikipedia.org/?title=Watt-hours&redirect=no

    From Wikipedia, the free encyclopedia. Redirect page

  8. Ton of refrigeration - Wikipedia

    en.wikipedia.org/wiki/Ton_of_refrigeration

    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 ...

  9. Watt-hour per kilogram - Wikipedia

    en.wikipedia.org/wiki/Watt-hour_per_kilogram

    The watt, kilogram, joule, and the second are part of the International System of Units (SI). The hour is not, though it is accepted for use with the SI.Since a watt equals one joule per second and because one hour equals 3600 seconds, one watt-hour per kilogram can be expressed in SI units as 3600 joules per kilogram.

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