tim lane

rocket mass heater in a yurt do they keep the yurt warm at night after the fire is out ? i read in Rocket Mass Heaters: Superefficient Woodstoves YOU Can Build by Ianto Evans that it shouldn't be done in a tent or tipi has it worked for you in your yurt ? thank you

thank you for the quick answer kooks like i will give it a try and build a rmh the stove i currently have heats the yurt up to much so a rmh should warm the room pretty good at 40 % heat off the barrel will the bench keep the room heated all night ? or just help some ?

allen lumley wrote:Tim Lane : Q1 : The heat given off by the barrel is prompt heat , it heats the air and you get it now ,~40%~ of your total heat energy comes off of the barrel !
The Cob Thermal Mass is there to capture the last 50-55% of the heat energy that Would just go up the chimney otherwise ! The Rocket Mass Heater RMH,
heats the Mass and you get slow constant heat off of the thermal mass That delivers heat to warm its immediate surroundings over the Next 20 - 25 hours !

Q2 ) Definitely the RMH, the Pocket Rocket is not meant for indoor use, and it sends most of the heat Energy it produces as wasted heat right up the chimney

For the good of the craft ! As always, your comments and Questions are Solicited and Welcome ! Big AL !

does a rmh heat the room or the bench ? wil it work right in a yurt ? i was reading Rocket Mass HeateRs:
Superefficient Woodstoves YOU Can Build
and it says
Where would I choose not to build a
Rocket Stove? Buildings that are irregularly
occupied such as churches, meeting halls, etc
need to be heated rapidly and don’t benefit
from long-term stored heat. In large houses
with many rooms in very cold zones where
heat needs to reach rooms distant from the
stove, it might make sense to heat selected
rooms by forced hot air. In a work space
such as a carpentry shop where one seldom
sits down it might be better to have a stove
which delivers a lot of radiant heat in place
of storing heat, so that you can quickly adjust
your comfort by moving closer or further
from the stove. In outdoor rooms or living
spaces that are not well sealed such as teepees,
tents, etc the air heated by the storage would
leave the building before you got a chance to
enjoy it. Better maybe to put in a stove that
delivers high temperature radiation such as a
barrel stove or a Rumford fireplace.

q #1 does a rmh heat the room or the bench ?
q #2 would a pocket rocket be more suitable ?

thank you

thinking ill do a heat riser out of piping and perlite and slip to save money whats a good recipe for that ?

Satamax Antone wrote:Thomas, the sheet metal in his case, is on top and around. Won't fail that soon.

Tim, if you can't find rockwool, perlite or vermiculite would do the job, as well as wood ashes. But you need to insulate. If you have clay, clay and straw, or wood dust works too. You could also look for the white insulating firebricks.

i used firebrick is that the same as white brick or do i need insulation ?

i cant find rock wool or ceramic insulation in my area Sacramento and its to expensive online can i get away with no insulation on the fire brick heat riser its the thicker brick 4 inch
permies topic insulation online

thank you for the reply i will use a 6 inch system then maybe even 8 for good flow i was going to do a firebrick heat riser insulated with something like rock wool or ? reason being that metal ect breaks down when i build i try to always use the strongest materials and design will cob and fire clay stick and stay in place ?

i am going with the firebrick like in this video of ernie and erica at 5:20 ernie and erica interview
wondering what they insulated with ?

ok ill start with the set up hi and thank you guys for such an awsome webpage my set up is in a yurt on a well built platform im going to use store bought fire brick and free cycled
red brick im thinking that a 4 inch stove pipe system would work best because its a 16 foot yurt the bench for the small diner table is going to be 5-6 feet long made out of red brick rocks and cob mix with red soil found on the property i live on the heat riser will be made from fire brick #1 what should i insulate the heat riser with ? do i need to insulate the heat riser ? #2 can i use cob slip as the mortar for the heat riser ? if not what is the simplest mix for high fire area on the heat riser ? or what is the easiest way to do refractory cement ? i have seen a video on youtube and they say to use fire clay and something im not sure because its not clear in the video im going to use one of the smaller barrels i think its a 15 gal does that seem like it would heat a 16 foot yurt ps i am going with the rmh so i dont have to get up at night and re stoke the fire does this system seem like it will keep a yurt heated for 8 hours after its been heated ? im currently using a vogalzang box wood stove and it gets to hot easy