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  2. Auto-defrost - Wikipedia

    en.wikipedia.org/wiki/Auto-defrost

    While this technique was originally applied to the refrigerator compartment, it was later used for freezer compartment as well. A combined refrigerator/freezer which applies self-defrosting to the refrigerator compartment only is usually called "partial frost free" or semi-automatic defrost (some brands call these "Auto Defrost" while Frigidaire referred to their semi-automatic models as ...

  3. Direct cool - Wikipedia

    en.wikipedia.org/wiki/Direct_cool

    Direct cool is one of the two major types of techniques used in domestic refrigerators, the other being the "frost-free" type. Direct-cool refrigerators produce the cooling effect by a natural convection process from cooled surfaces in the insulated compartment that is being cooled. Water vapor that contacts the cooled surface freezes.

  4. Refrigerator - Wikipedia

    en.wikipedia.org/wiki/Refrigerator

    Food in a refrigerator with its door open. A refrigerator, commonly shortened to fridge, is a commercial and home appliance consisting of a thermally insulated compartment and a heat pump (mechanical, electronic or chemical) that transfers heat from its inside to its external environment so that its inside is cooled to a temperature below the room temperature. [1]

  5. 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 ...

  6. Absorption refrigerator - Wikipedia

    en.wikipedia.org/wiki/Absorption_refrigerator

    Common absorption refrigerators use a refrigerant with a very low boiling point (less than −18 °C (0 °F)) just like compressor refrigerators.Compression refrigerators typically use an HCFC or HFC, while absorption refrigerators typically use ammonia or water and need at least a second fluid able to absorb the coolant, the absorbent, respectively water (for ammonia) or brine (for water).

  7. Vaccine refrigerator - Wikipedia

    en.wikipedia.org/wiki/Vaccine_refrigerator

    Vaccines are also compromised through improper use of the door gasket to feed cables from data loggers and thermometers, allowing excess warm air in, and cold air out of the refrigerator or freezer. Over time this causes the compressor to work a longer duty cycle and eventually leads to failure.

  8. The USWNT reclaimed soccer's mountaintop in 2024. Its next ...

    www.aol.com/sports/uswnt-reclaimed-soccers...

    On a bitterly cold night in The Hague, at the end of a long, wearying season, with stars resting, they took the field for a friendly full of built-in caveats and excuses — and refused to use them.

  9. 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.

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