Adam Buchler wrote:... So, I was thinking....can I just connect the exhaust from the rocket heater to the heating ducts and have that excess hot air travel through the ducts into the upstairs for additional heat up there? Or is that not wise? Does the exhaust absolutely have to travel out of the house?
That is "exhaust" from combustion, not "hot air." Exhaust from combustion includes much more CO2 than clean air, at times CO (the infamous carbon monoxide that suicides sit and breathe in their garages until they pass out and die rather quickly), and despite the rocket stove's efficiency, some other products of combustion like smoke etc. Especially during start up and odd events, when there may be additional more carbon monoxide and/or smoke-type stuff.
A rocket stove burns at very freaky high temperatures, and ideally should produce only that heat, CO2, and Water vapor !
Unfortunately as each rocket built is a One- of-a-Kind -NO ONE- can promise that your rocket will not produce Carbon Monoxide which
is a clear and Odorless Gas that will kill you !
You may remember the movie Apollo 13 - The movie that gave us the MEME - " Houston we have a Problem"! After the mid-flight Accident
The Astronauts had to create a Carbon Dioxide Scrubber to reduce High levels of Carbon Dioxide before That gas reached fatal amounts !
For the Good of the Crafts ! Big AL
A double bell like the one Max linked to (or simpler for a frst-time builder) might be better at controlling the heat extraction and storage.
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