As a result, the exhaust temperature of an operating rocket-mass heater can reach an average of 60 to 90 °C (140 to 194 °F), a temperature lower than that of a conventional wood stove, which averages between 400 and 600 °C (752 and 1112 °F). The problem with what you're proposing is that cooking on a rocket stove without the oil barrel is that you usually cook on the heat elevator and end up with a truck full of smoke. In the e-book “The Rocket Powered Oven”, Tim states that “for a rocket stove to work well, dimensions are vitally important. I know that there are portable rocket stoves that are mainly used for cooking, but I don't know if they would provide enough BTUs for heating, plus that some type of ventilation would be needed.
You would be losing most of the heat that way, since the goal and effect of mass are to retain heat for a long time. Larry Winiarski, best friend of ten years and inventor of the rocket stove and author of the “Ten Principles of Combustion”. These rocket mass heaters are more efficient like the heat of steam, but much less dangerous: the surface temperature is simply warm to the touch. RMH burns wood fuel more efficiently and completely and capture more heat than conventional wood stoves.
A rocket-type stove of this size has been tested in the laboratory to emit 90% less pollution and use up to 90% less wood (biomass) than an open fireplace. The weight varies greatly depending on the materials used and the design of the stove, but the masonry of a typical rocket mass heater can weigh 3 to 6 tons. As the fire starts and the combustion tunnel heats up, hot air rushes up the heat elevator, dragging a large amount of air behind it. The DVDs will be about cob-style rocket mass heaters, pebble-style rocket mass heaters, cores that can be shipped, and even the Mass Heater rocket innovators event that Paul organized in his homeland.