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  2. Ground source heat pump - Wikipedia

    en.wikipedia.org/wiki/Ground_source_heat_pump

    There are variations that allow for split systems, high-velocity systems, and ductless systems. ... 3.4 ton/yr Russia: 351 ... The rapid escalation in system price ...

  3. Seasonal energy efficiency ratio - Wikipedia

    en.wikipedia.org/wiki/Seasonal_energy_efficiency...

    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:

  4. Ton of refrigeration - Wikipedia

    en.wikipedia.org/wiki/Ton_of_refrigeration

    Just as horsepower and candlepower were intuitive units of measure for people living through the transition from horse to steam power [3] and from flame-based to electric lighting, so was the ton of refrigeration an intuitive unit of measure during a technological change, as the ice trade gradually included growing percentages of artificial ice ...

  5. Heat pump - Wikipedia

    en.wikipedia.org/wiki/Heat_pump

    Air source heat pumps are the most common models, while other types include ground source heat pumps, water source heat pumps and exhaust air heat pumps. [3] Large-scale heat pumps are also used in district heating systems. [4] The efficiency of a heat pump is expressed as a coefficient of performance (COP), or seasonal coefficient of ...

  6. Soon-to-be college graduate died from allergic reaction on ...

    www.aol.com/news/soon-college-graduate-died...

    Mavericks-Suns brawl ends with 3 ejected after punch thrown. Sports. Associated Press. Mitchell scores 33, Cavs beat Nuggets 149-135 for 6th straight win. Weather. Weather. CBS News.

  7. 5 Items From the 1970s That Are Worth a Lot of Money - AOL

    www.aol.com/5-items-1970s-worth-lot-170007423.html

    The Atari video computer system, known as the Atari 2600 after 1977, was a trailblazer in gaming entertainment. Here are some examples of what just basic vintage games could make you if you sell them.

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