allen lumley wrote:Martin van barren : Location, Location, Location !
allen lumley wrote:We have a problem with Any use of Portland Cement near the core of Your Rocket as it can not take the heat and will disintegrate !
allen lumley wrote:If their is a RMH in your future we will help you build it
Satamax Antone wrote:Martin, your leca seems to be expanded clay. Good enough for the insulation of the rocket core and heat riser. May be mixed with some fireclay, and surounded by contained rockwool. For example.
Satamax Antone wrote: lining the feed and burn tunnel with firebrick splits. Tho, i would advise you to build a batch rocket instead of a J tube, looking at your location.
Satamax Antone wrote:Granite cab be used in the mass, and you can do ramed earth mortar between the pieces of granite. If you can find some not far, i'm sure quartzite should hold for a while in a rocket.
allen lumley wrote:Watch out ! Use extreme caution especially with U-Tube Videos of Rocket Mass Heaters There are 'Flaming Units of Death' out there-
and no way for us to remove or block them!
The U-Tube RMH video you picked is much too unnecessarily complicated and appears to use non standard sized bricks !
( I have no idea what is standard for your location ! )
allen lumley wrote:I am trying to find a safe simple build that lends itself to your remote location build !
allen lumley wrote:remember you don't really own a subject until you can explain it to your grand mother !
allen lumley wrote:Himalayan Winter
allen lumley wrote:I'm afraid that you missed my point about barrel size
allen lumley wrote:While a smallish unit is normally a plus in Construction and Use, the higher Temperatures radiating off of the barrel will require MORE space for comfort and safety.
allen lumley wrote:Add to this the increasing difficulty to create a good working, well build RMH smaller than 6'' -especially as a first build- !
allen lumley wrote: Yes there are other options for heat exchanges, our job is to make sure that you get a successful build your very 1st time,
Glenn Herbert wrote:You could use granite for the bell, depending on your masonry experience. How much experience do you have? You would want to be sure that you would not have leaks from the bell that would let flue gases into your room. It might be practical to build a smallish bell with cob mortar at first, hone your skill, and rebuild to a final design later.
martin van baaren wrote:
Should be possible to put a steel plate on top of a masonry bell?
Satamax Antone wrote:And for the interest of what is possible, a pure cooking rocket by tallgrass.
Hope this can give you ideas.
martin van baaren wrote:As it's now you probably should not fall asleep next to it if no sufficient ventilation in the room.
Some modifications of the cooking plate could resolve this.
Testing the cooker. Even with the mix fresh and wet applied around the tea kettle, you can see the burn is complete combustion. There was smoke for only about 25 seconds upon first lighting the fire, then the draw became smooth and the smoke disappeared. Here I am venting the exhaust gasses straight into the room, and the exhaust port is clean and clear.
Satamax Antone wrote:Some idea is ramping up in my mind. And i hope the results will be posted by november.