Hi, here is my feedback and experience with heating a container using wood.
I built several wood stoves before arriving at my current solution.
My stove is a high-radiation model based on the design of workshop sawdust stoves. It allows me to burn all types of wood: firewood, reclaimed wood, compressed wood, etc.
Although my living space is 12 m², the stove has a power output of 6 kW. The need for extra power is explained by my absence during the day while I work in my workshop.
So I run two heating sessions of 1 hour and 30 minutes each per day.
The stove has two sides covered with bricks, for a total of 20 bricks. They store heat during the heating phase and release it over approximately 6 to 7 hours.
I did not choose a traditional mass rocket stove because I sometimes leave for several days, and in winter the temperature inside the container drops to 0°C. With my stove, I can raise the temperature by 19°C in one hour. However, it would take several hours with a mass rocket stove.
In terms of wood consumption, I need about two steres of firewood per year, or 500 kg of compressed logs.
When I’m not using compressed logs, I prepare my own firewood by cutting down damaged trees using a Japanese hand saw and a reciprocating saw, which I recharge using my solar panels.