Flameless ration heater
U.S. military self-heating ration technology
Flameless ration heater
A flameless ration heater (FRH), colloquially an MRE heater, is a form of self-heating food packaging included in U.S. military Meal, Ready-to-Eat (MRE) rations since 1993. 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 was included with each MRE since 1993.
Read on Wikipedia · Image Ashley Pomeroy, CC BY-SA 4.0
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