ianuk
New Member
Posts: 2
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Post by ianuk on Mar 14, 2020 13:09:52 GMT -8
Hi all I am looking to build a rocket stove with, not a J stove a K stove, I believe the ratio is 4:2:1 flue, burn chamber and feed tube, please correct me if I'm incorrect. I have a 2 meter (6foot) length of 6 inch box section and about 5foot of 6 inch tubing I can use for the stove
I would like to use the stove, which will be located outside under a cover, to heat water which will either use thermophysioning and the addition of a water pump on the return side to heat a house radiator located in my very small shed/man cave.
I know that I could use copper pipe wrapped around the flue, however I would like to try and use either the 10L or 20L water tanks I have at my disposal as I feel it would be more efficient.
The stove will mainly be used in the UK autumn and winter time
Any advice and help on this would be greatly appreciated
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Post by martyn on Mar 14, 2020 23:50:41 GMT -8
Well you may come across a couple of issues ...if the rocket stove is working properly then metal is not a good material to use and your rocket stove will be very short lived as the metal will degrade surprisingly quickly! For for a rocket stove to work efficiently and effectively you need to insulate the burn chamber and heat riser, the insulation will be susceptible to damp and will need encasing or damp proofing somehow. So if you want to build something that works, you need to avoid metal in the critical areas and build with high temperature refactory products , add insulation and make sure is does not get wet.
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ianuk
New Member
Posts: 2
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Post by ianuk on Mar 15, 2020 13:17:33 GMT -8
Hi Martyn I do have at my disposal around 130 household bricks would these be any good?
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Post by martyn on Mar 16, 2020 2:04:33 GMT -8
Possibly but probably not, the old style red clay bricks are good for certain areas but not for the high heat areas . I don’t mean to be negative but the nature of a rockets stove involves extremely hot temperatures and using anything else than proper refactory materials will only be a disappointment for you. It is possible to use steel on less efficient stoves but for our use we need things like fire bricks, refactory cement, ceramic fibre and ceramic board. They are quite easy to make but you do need the correct materials. There is another site you can find that might suit your needs more as this one is a bit more specialist and concentrates more on development for the advanced builders. permies.com/f/125/rocket-stoves
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