Imagine a personal heating system that works indoors as well as outdoors, can be taken anywhere, requires little energy, and is independent of any infrastructure. It exists – and is hundreds of years old.
Exactly. Solutions that rely on a single means of producing energy (i.e. microwavable bag, electric heat blanket) have a huge disadvantage compared to hot water bottles because hot water bottles can be “powered” through all kinds of water heating methods. Stove top, induction plate, water boiler, fire, etc.
Exactly. Solutions that rely on a single means of producing energy (i.e. microwavable bag, electric heat blanket) have a huge disadvantage compared to hot water bottles because hot water bottles can be “powered” through all kinds of water heating methods. Stove top, induction plate, water boiler, fire, etc.