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  2. Vacuum cooling - Wikipedia

    en.wikipedia.org/wiki/Vacuum_cooling

    Vacuum cooling is generally used for cooling food products that have a high water content and large porosities, due to its efficacy in losing water from both within and outside the products. (Lettuce is an example of vacuum cooled products.) This is the most widely used technique for rapid cooling of food products which has been proven to be ...

  3. Vacuum - Wikipedia

    en.wikipedia.org/wiki/Vacuum

    A vacuum (pl.: vacuums or vacua) is space devoid of matter. The word is derived from the Latin adjective vacuus (neuter vacuum) meaning "vacant" or "void".

  4. Vacuum furnace - Wikipedia

    en.wikipedia.org/wiki/Vacuum_furnace

    A vacuum furnace is a type of furnace in which the product in the furnace is surrounded by a vacuum during processing. The absence of air or other gases prevents oxidation , heat loss from the product through convection , and removes a source of contamination.

  5. Cold trap - Wikipedia

    en.wikipedia.org/wiki/Cold_trap

    In vacuum applications, a cold trap is a device that condenses all vapors except the permanent gases (hydrogen, oxygen, and nitrogen) into a liquid or solid. [ 2 ] [ needs update ] The most common objective is to prevent vapors being evacuated from an experiment from entering a vacuum pump where they would condense and contaminate it.

  6. Vacuum evaporation - Wikipedia

    en.wikipedia.org/wiki/Vacuum_evaporation

    Vacuum evaporation is the process of causing the pressure in a liquid-filled container to be reduced below the vapor pressure of the liquid, causing the liquid to evaporate at a lower temperature than normal.

  7. Vacuum flask - Wikipedia

    en.wikipedia.org/wiki/Vacuum_flask

    A vacuum flask (also known as a Dewar flask, Dewar bottle or thermos) is an insulating storage vessel that slows the speed at which its contents change in temperature. It greatly lengthens the time over which its contents remain hotter or cooler than the flask's surroundings by trying to be as adiabatic as possible.

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  9. Cascade refrigeration - Wikipedia

    en.wikipedia.org/wiki/Cascade_refrigeration

    Refrigeration power and efficiency are low but Peltier coolers can be small, for small cooling loads resulting in overall low power consumption for a Peltier cooler with three stages. [9] [10] [11] For a Peltier cooler with seven stages, power consumption can be 65 W with a cooling capacity of 80 mW. [12]