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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. ULT freezer - Wikipedia

    en.wikipedia.org/wiki/ULT_freezer

    An ultra low temperature (ULT) freezer is a refrigerator that stores contents at −80 to −86 °C (−112 to −123 °F). [1] An ultra low temperature freezer is commonly referred to as a "minus 80 freezer" or a "negative 80 freezer", referring to the most common temperature standard. [2] ULT freezers come in upright and chest freezer formats.

  4. Refrigerator - Wikipedia

    en.wikipedia.org/wiki/Refrigerator

    Commercial refrigerator and freezer units were in use for almost 40 years prior to the common home models. The freezer-over-refrigerator style had been the basic style since the 1940s, until modern, side-by-side refrigerators broke the trend. A vapor compression cycle is used in most household refrigerators, refrigeratorfreezers and freezers.

  5. 10 Foods People Don't Know They Can Freeze - AOL

    www.aol.com/finance/10-foods-youre-not-freezing...

    Grated Cheese. Throwing a bag of grated cheese in the freezer just feels … wrong. But multiple Redditors say that shredded cheese fares better than blocks or slices.

  6. Frozen food - Wikipedia

    en.wikipedia.org/wiki/Frozen_food

    The freezing technique itself, just like the frozen food market, is developing to become faster, more efficient and more cost-effective. As demonstrated by Birdseye's work, faster freezing means smaller ice crystals and a better-preserved product. [8] Birdseye's original cryogenic freezing approach using immersion in liquid nitrogen is still ...

  7. Refrigeration - Wikipedia

    en.wikipedia.org/wiki/Refrigeration

    Refrigeration has thus rapidly evolved in the past century, from ice harvesting to temperature-controlled rail cars, refrigerator trucks, and ubiquitous refrigerators and freezers in both stores and homes in many countries. The introduction of refrigerated rail cars contributed to the settlement of areas that were not on earlier main transport ...

  8. Absorption refrigerator - Wikipedia

    en.wikipedia.org/wiki/Absorption_refrigerator

    The refrigerator is a small unit placed over a campfire, that can later be used to cool 15 litres (3.3 imp gal; 4.0 US gal) of water to just above freezing for 24 hours in a 30 °C (86 °F) environment. [4] The concept was similar to an early refrigeration device known as an Icyball.

  9. Heat pump and refrigeration cycle - Wikipedia

    en.wikipedia.org/wiki/Heat_pump_and...

    Thermodynamic heat pump cycles or refrigeration cycles are the conceptual and mathematical models for heat pump, air conditioning and refrigeration systems. [1] A heat pump is a mechanical system that transmits heat from one location (the "source") at a certain temperature to another location (the "sink" or "heat sink") at a higher temperature. [2]

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