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  2. Applications of the Stirling engine - Wikipedia

    en.wikipedia.org/wiki/Applications_of_the...

    Heat pumps are by far the most energy-efficient types of heating systems, since they "harvest" heat from the environment, rather than only turning their input energy into heat. In accordance with the second law of thermodynamics, heat pumps always require the additional input of some external energy to "pump" the collected heat "uphill" against ...

  3. Heat pump - Wikipedia

    en.wikipedia.org/wiki/Heat_pump

    A heat pump is a device that consumes energy (usually electricity) to transfer heat from a cold heat sink to a hot heat sink. Specifically, the heat pump transfers thermal energy using a refrigeration cycle , cooling the cool space and warming the warm space. [ 1 ]

  4. Air source heat pump - Wikipedia

    en.wikipedia.org/wiki/Air_source_heat_pump

    An air source heat pump (ASHP) is a heat pump that can absorb heat from air outside a building and release it inside; it uses the same vapor-compression refrigeration process and much the same equipment as an air conditioner, but in the opposite direction. ASHPs are the most common type of heat pump and, usually being smaller, tend to be used ...

  5. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    For example, a conventional heat pump system used to heat a building in Montana's −57 °C (−70 °F) low temperature or cool a building in the highest temperature ever recorded in the US—57 °C (134 °F) in Death Valley, California, in 1913 would require a large amount of energy due to the extreme difference between inside and outside air ...

  6. International Comfort Products - Wikipedia

    en.wikipedia.org/wiki/International_Comfort_Products

    ICP is a Carrier subsidiary. ICP makes oil and gas furnaces, heat pumps, and central air-conditioning systems for residential and commercial customers. [1] It manufacturers, markets, and sells residential heating and cooling systems under the Arcoaire, Comfortmaker, Day & Night, Heil, KeepRite, Lincoln, and Tempstar brands; its commercial units, with up to 25 tons of cooling capacity, are sold ...

  7. 11-Year-Old Girl Who Tried to Save Boy, 12, After He Fell ...

    www.aol.com/lifestyle/11-old-girl-tried-save...

    An 11-year-old girl who was taken to a hospital in critical condition after attempting to save her 12-year-old classmate's life when he fell through the surface of an icy upstate New York lake has ...

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