back packing sauna problem. i want to make a portable heat and steam source for a small 2 man tent sized sauna?
i am trying to design a lightweight portable steamer for a back packing sauna. i do not want to use hot rocks as this is time consuming an the rocks are not always available. idealy the heat source would be outside of the sauna and the steam piped in. i am not sure how much water it is going to take, which means i may have to have some way keeping the boiler etc topped up from a plastic container. i have considered using a conventional wood burning stove with a coil of copper pipe within but cannot get my head around how this would work with out a kettle type reservoir to hear the water, if the water was just heated in the copper pipe coil fed from a lightweight water container i would imagine i would then need much less heat, help please.