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2. Flameless ration heater - Wikipedia

   en.wikipedia.org/wiki/Flameless_ration_heater

   To heat a meal, the bag is first torn open, and a sealed food pouch is placed inside. About 1 US fluid ounce (30 mL) of water is then added to the bag, using the line printed on the bag as a marker. The chemical reaction begins immediately, and takes about 12 to 15 minutes to heat a food pouch to about 60 °C (140 °F).

3. Self-heating food packaging - Wikipedia

   en.wikipedia.org/wiki/Self-heating_food_packaging

   Self-heating food packaging is active packaging with the ability to heat food contents without external heat sources or power, usually using an exothermic chemical reaction. Packets can also be self-cooling. These packages are useful for military operations, during natural disasters, or whenever conventional cooking is not available.

4. Susceptor - Wikipedia

   en.wikipedia.org/wiki/Susceptor

   A susceptor is a material used for its ability to absorb electromagnetic energy and convert it to heat (which in some cases is re-emitted as infrared thermal radiation). The electromagnetic energy is typically radiofrequency or microwave radiation used in industrial heating processes.

5. Dielectric heating - Wikipedia

   en.wikipedia.org/wiki/Dielectric_heating

   Dielectric heating, also known as electronic heating, radio frequency heating, and high-frequency heating, is the process in which a radio frequency (RF) alternating electric field, or radio wave or microwave electromagnetic radiation heats a dielectric material. At higher frequencies, this heating is caused by molecular dipole rotation within ...

6. Cutting back on indoor heating costs? Here are 25 ways to ...

   www.aol.com/lifestyle/25-ways-stay-warm-winter...

   1. Warm up with store-bought hand warmers, microwavable heating pads, hot water bottles or heated blankets. Following the manufacturer’s instructions and concentrating on your torso are key ...

7. Microwave volumetric heating - Wikipedia

   en.wikipedia.org/wiki/Microwave_Volumetric_Heating

   Microwave volumetric heating (MVH) is a method of using microwaves to evenly heat the entire volume of a flowing liquid, suspension or semi-solid. [1] The process is known as MVH because the microwaves penetrate uniformly throughout the volume of the product being heated, thus delivering energy evenly into the body of the material.