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  2. 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 ).

  3. Chilled water - Wikipedia

    en.wikipedia.org/wiki/Chilled_water

    The use of utility supplied chilled water is most cost effective when it is designed into the building's infrastructure or when chiller/cooling tower equipment must be replaced. Commercial customers often lower their air conditioning costs from 10 to 20% by purchasing chilled water. [3]

  4. Refrigeration - Wikipedia

    en.wikipedia.org/wiki/Refrigeration

    The measured capacity of refrigeration is often dimensioned in the unit of kW or BTU/h. Domestic and commercial refrigerators may be rated in kJ/s, or Btu/h of cooling. For commercial and industrial refrigeration systems, the kilowatt (kW) is the basic unit of refrigeration, except in North America, where both ton of refrigeration and BTU/h are ...

  5. Chiller - Wikipedia

    en.wikipedia.org/wiki/Chiller

    A liquid (glycol based) chiller with an air cooled condenser on the rooftop of a medium size commercial building. In air conditioning systems, chilled coolant, usually chilled water mixed with ethylene glycol, from a chiller in an air conditioning or cooling plant is typically distributed to heat exchangers, or coils, in air handlers or other types of terminal devices which cool the air in ...

  6. Coefficient of performance - Wikipedia

    en.wikipedia.org/wiki/Coefficient_of_performance

    The COP of absorption chillers can be improved by adding a second or third stage. Double and triple effect chillers are significantly more efficient than single effect chillers, and can surpass a COP of 1. They require higher pressure and higher temperature steam, but this is still a relatively small 10 pounds of steam per hour per ton of cooling.

  7. District cooling - Wikipedia

    en.wikipedia.org/wiki/District_cooling

    Chillers in a district cooling at University of Rochester in Rochester, New York. District cooling is the cooling equivalent of district heating.Working on principles broadly similar to district heating, district cooling delivers chilled water to buildings like offices and factories.

  8. 'Largest floating crane' at Baltimore bridge site isn't the ...

    www.aol.com/largest-floating-crane-baltimore...

    The Port of Baltimore shared an image of the crane barge, Donjon's Chesapeake 1000, which ABC News reported was onsite Friday morning at the site of the Francis Scott Key Bridge. The span ...

  9. Chiller boiler system - Wikipedia

    en.wikipedia.org/wiki/Chiller_boiler_system

    A chiller boiler system is a hydronic system. It uses water instead of air to heat and cool a structure. A properly designed hydronic system is usually more efficient than a standard forced air system. [1] Chiller boiler systems use radiant heating and cooling or fan coil systems to condition a home or business. This allows for multiple zones ...

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