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2. Coefficient of performance - Wikipedia

   en.wikipedia.org/wiki/Coefficient_of_performance

   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.

3. Refrigerator - Wikipedia

   en.wikipedia.org/wiki/Refrigerator

   A refrigerator, commonly shortened to fridge, ... (9 cu ft) compartment, and cost $714. (A 1922 Model-T Ford cost about $476.) By 1923, Kelvinator held 80 percent of ...

4. Life-cycle cost analysis - Wikipedia

   en.wikipedia.org/wiki/Life-cycle_cost_analysis

   The term differs slightly from Total cost of ownership analysis (TCOA). LCCA determines the most cost-effective option to purchase, run, sustain or dispose of an object or process, and TCOA is used by managers or buyers to analyze and determine the direct and indirect cost of an item. [1] The term is used in the study of Industrial ecology (IE ...

5. Maintenance - Wikipedia

   en.wikipedia.org/wiki/Maintenance

   A tractor being mechanically repaired in Werneuchen, 1966 Field repair of aircraft engine (1915–1916). The technical meaning of maintenance involves functional checks, servicing, repairing or replacing of necessary devices, equipment, machinery, building infrastructure and supporting utilities in industrial, business, and residential installations.

6. AOL.com - News, Sports, Weather, Entertainment, Local & Lifestyle

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   AOL latest headlines, entertainment, sports, articles for business, health and world news.

7. News, Politics, Sports, Mail & Latest Headlines - AOL.com

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   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.