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2. Freeze stat - Wikipedia

   en.wikipedia.org/wiki/Freeze_stat

   Air coil freeze stat. A freeze stat is a temperature sensing device for HVAC that monitors a heat exchanger to prevent its coils from freezing.Freeze stats can be used on both refrigerant-to-air, and refrigerant-to-liquid type heat exchangers and serve different purposes with similar goals for each.

3. Ground source heat pump - Wikipedia

   en.wikipedia.org/wiki/Ground_source_heat_pump

   Ground source heat pumps are recognized as one of the most efficient heating and cooling systems on the market. They are often the second-most cost-effective solution in extreme climates (after co-generation), despite reductions in thermal efficiency due to ground temperature. (The ground source is warmer in climates that need strong air ...

4. Auto-defrost - Wikipedia

   en.wikipedia.org/wiki/Auto-defrost

   "Frost-Free" refrigerator/freezer units usually use a heating element to defrost their evaporators, a pan to collect and evaporate water from the frost that melts from the cold plate and/or evaporator coil, a timer which turns off the compressor and turns on the defrost element usually from once to 4 times a day for periods usually ranging from ...

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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.

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. New Hampshire - Wikipedia

   en.wikipedia.org/wiki/New_Hampshire

   New Hampshire's residential electricity use is low compared with the national average, in part because demand for air conditioning is low during the generally mild summer months and because few households use electricity as their primary energy source for home heating. Nearly half of New Hampshire households use fuel oil for winter heating ...

8. Cold Regions Research and Engineering Laboratory - Wikipedia

   en.wikipedia.org/wiki/Cold_Regions_Research_and...

   CRREL staff explored and helped develop a new overland supply route across the Ross Ice Shelf over the Antarctic Range and the Antarctic ice cap to lower the cost of supplying the South Pole Station. [39] [40] In 2016, CRREL research civil engineers designed, built and tested a new snow runway for the McMurdo Station, called "Phoenix". It is ...

9. Spray pond - Wikipedia

   en.wikipedia.org/wiki/Spray_pond

   Specific spray pond surface areas tend to range between 1.2 and 1.7 m 2 per m 3 /h of water to be cooled. The width chosen for a drift channel around the active zone of the pond (containing the sprays) is dependent on a number of factors, including the prevailing wind strength, the average size of the spray droplets produced by the nozzles, and the presence of any nearby structures which may ...