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  2. Individual quick freezing - Wikipedia

    en.wikipedia.org/wiki/Individual_Quick_Freezing

    Cryogenic IQF freezers immerse the product in liquid nitrogen at very low temperatures, freezing it rapidly while continuously moving the product to avoid block or lump formation. [5] Although this method shows good freezing results, it might lead to higher processing costs per weight of product due to the cost of the liquid nitrogen required.

  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. Supercooling - Wikipedia

    en.wikipedia.org/wiki/Supercooling

    Supercooled water, still in liquid state Start of solidification as a result of leaving the state of rest. Supercooling, [1] also known as undercooling, [2] [3] is the process of lowering the temperature of a liquid below its freezing point without it becoming a solid.

  5. Cryogenics - Wikipedia

    en.wikipedia.org/wiki/Cryogenics

    Nitrogen is a liquid under −195.8 °C (77.3 K).. In physics, cryogenics is the production and behaviour of materials at very low temperatures.. The 13th International Institute of Refrigeration's (IIR) International Congress of Refrigeration (held in Washington DC in 1971) endorsed a universal definition of "cryogenics" and "cryogenic" by accepting a threshold of 120 K (−153 °C) to ...

  6. Low-temperature technology timeline - Wikipedia

    en.wikipedia.org/wiki/Low-temperature_technology...

    The following is a timeline of low-temperature technology and cryogenic technology (refrigeration down to close to absolute zero, i.e. –273.15 °C, −459.67 °F or 0 K). [1] It also lists important milestones in thermometry , thermodynamics , statistical physics and calorimetry , that were crucial in development of low temperature systems.

  7. Freeze warnings issued for millions with the coldest ...

    www.aol.com/news/coldest-air-months-way-millions...

    The high temperature in Washington, DC, on Wednesday could top out in the mid-50s — 10 to 15 degrees lower than normal for mid-October. Atlanta could struggle to break into the low 60s on ...

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