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  2. Flameless ration heater - Wikipedia

    en.wikipedia.org/wiki/Flameless_ration_heater

    The heater is a plastic bag filled with magnesium and iron powders and table salt. When a meal pouch is placed in the bag and water is added, an exothermic reaction occurs which rapidly boils the water to heat the food. The U.S. Army began research into a chemical method to heating meals in 1973. The FRH was first issued in May 1990, and an FRH ...

  3. Self-heating food packaging - Wikipedia

    en.wikipedia.org/wiki/Self-heating_food_packaging

    Commercial heat sources for self-heating food packaging use an exothermic (heat releasing) reaction, for which there are several common formulations. These include: Quicklime aka calcium oxide, and water. Quicklime, inexpensive and readily available, is generally recognized by the FDA as safe. [2] The product of the reaction is calcium hydroxide.

  4. Food warmer - Wikipedia

    en.wikipedia.org/wiki/Food_warmer

    Some food cookers can then, in essence, become food warmers as they use a reduced heat to maintain a serving temperature. [1] Electric rice cookers do this automatically. A multicooker is an electric kitchen appliance for automated cooking using a timer. In addition to cooking programs, a multicooker may have functions to keep food warm. [1 ...

  5. Thermal bag - Wikipedia

    en.wikipedia.org/wiki/Thermal_bag

    A thermal bag is a type of thermally insulated shipping container in the form of a bag which can be carried, usually made of thermally insulating materials and sometimes a refrigerant gel. It is used to help maintain the temperature of its contents, keeping cold items cold, and hot items hot.

  6. 30 of the best Valentine's Day gifts for him - AOL

    www.aol.com/lifestyle/best-valentines-day-gifts...

    OCOOPA Rechargeable Hand Warmer (1 pack) For a guy who likes to spend a lot of time outside, we recommend a pair of rechargeable hand warmers like these from Ocoopa.

  7. Hand warmer - Wikipedia

    en.wikipedia.org/wiki/Hand_warmer

    Lighter fuel warmer (Hakukin brand, Peacock model) Lighter fuel hand-warmers use lighter fluid (highly refined petroleum naphtha), in a catalyst combustion unit that runs at a lower temperature than an open flame with a greatly reduced fire risk. After lighting they operate inside a fabric bag typically with a drawstring.