How to build a Rocket Stove biomass heater
by ALROD53 on MARCH 22, 2011 - 7 Comments in food

I have been doing research all winter long about how to conserve fuel and keep the cabin warm as the  Ol’ All Nighter woodstove really eats up the wood.

So in the name of pure laziness began my search for a way to get maximum heat for minimum work I found the rocket stove mass heater. They appear to use small amounts of wood(sticks and branches) and retain heat for long periods. These are nothing new —  the Romans used them on a very large scale to heat the floors and water in there bath houses.

On a smaller scale  they can be used to heat greenhouse benches indoor benches made from cob as the mass then radiate the heat long after the fire has gone out and best of all can be made from stuff that you can find  for free or really cheap.

Another advantage is that the combustion is so efficient that their is almost no smoke once up to temperature. I found on youtube what I think is the best way to build one of these stoves, but  if you do your own search on this subject you may find a design that will fit your needs..larry



1 mainah { 03.23.11 at 8:38 am }

Unlike the Romans, I am at a severe disadvantage in not having a Slave to feed little sticks into the stove all night.

2 ahi { 04.01.11 at 12:37 pm }

If you want to store heat, check out masonry heaters, kachelofen.

3 Lyndee { 05.13.11 at 11:54 pm }

This has made my day. I wish all pstiogns were this good.

4 Joe Umali { 01.01.12 at 3:17 am }

Up to about what temperature can 5″ pipes connected to the heater get. Can they be used to heat up an enclosed structure to dry grains, for instance?

5 veronica { 01.17.12 at 9:00 am }

love this site!

6 shawn { 03.16.13 at 8:04 pm }

has any one used a Alumina-Silica Ceramic Fiber Blanket in there heaters?

7 John { 12.08.13 at 7:13 pm }

In response to the message about feeding sticks all night long – that would likely not be necessary. One of the features of the design of this “mass heater” is to heat up the mass (usually clay or sand burying parts of the exhaust pipe) which will store and radiate this heat for several hours. As described in the video linked below, once the fire has burned and heated, you will likely not have to feed the fire again until the next day, and your dwelling will remain warm.

And below is a very nice video showing how one is made.

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