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Post by malton on Apr 30, 2015 16:06:50 GMT -8
i am wondering about trying to add used engine oil to a rocket stove. how im thinking is drilling a hole in the burn tunnel and hooking up a pipe to drip oil down in once its heated up with wood. i would probably have to have it heated a little to drip easyly and id also add a valve to control flow. i have played a bit with adding oil to the stove im working on now( its my first and its not the smoothest but oh well. so far ive been getting it hot and the adding sawdust and getting that burning clean( no analyzer, just no smoke) and then adding oil. its done great untill i get to carried away.
but just throwing it out the to see everybodys thoughts. my stove is going to heat a 90 foot x 40 foot green house and i thought the oil could be the turbo/ nitrous to crank out the fast heat ??
i will get picks up just need to compress the ones i have or retake them in a smaller size
thx mike
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Post by DCish on Apr 30, 2015 16:54:02 GMT -8
Sounds interesting, I'll be curious what ideas folks have. My impression would be that for it to burn clean it would have to be dripped into the fire box at a rate that sustains the burn rate as the wood burns down a bit. Again, just my initial impression.
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Post by belgiangulch on Apr 30, 2015 17:50:19 GMT -8
hi malton; We had a used oil drip on the large wood burner in the heavy equipment shop when i worked at the saw mill. Simple as a 16 gal pail hanging near the stove to stay warm with a small copper line with a petcock on it to control flow.It regularly belched black smoke out the stack. Pretty much what you just described. A container of oil could be suspended over your feed tube(not your burn tunnel)and a slow drip added but I think you would be safer and cleaner not having hot oil hanging over your head (like we did at the mill) and just splash some on your wood or maybe keep some wood "marinating in a pail of oil that you could add when you want a turbo boost. 90'x40' is a huge greenhouse! Are you thinking of an 8" batch burner ? I have successfully/easily heated my 12x20 greenhouse for 2 montana winters with an 8" J tube at -10 F and no fire for 8-10 hours with temps staying in the low 40's inside. With one as big as yours it's going to take more than that and an 8" batch burner could be the thing for you.
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Post by malton on May 1, 2015 5:59:21 GMT -8
belgiangulch ya we might do 2 rockets. my goal is to make a wood chip burner that will self feed. i wish i knew how hard of a project this wouldve been before i became determined. i have done a couple of burns with a basic chip burner. and it did ok enough to hook me more on the project. ive got most of the stove done but havent commited to feed style. ive been stacking a bunch of different options. i am gaining tons of respect for the big players ( peter, matt , donkey and ernie and others ) and the research they have done. and for them sharing.
dcish some oil burners ive seen get a metal piece ( the piece can be what ever, having mass helps it stay going ) hot enough to ignite the oil and then it continues to heat itself
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Post by belgiangulch on May 1, 2015 7:02:55 GMT -8
Just read a post at permies about bigelow brook farm and a self feeding pellet design RMH they built.... worked great till one night when it plugged up and for the next twelve hours his greenhouse was full of smoke! Needless to say it killed everything ! He also had water mass with fish and his oxygenator pumped smoke thru his fish tank and killed his fish! Moral of this is be very careful with (self feeding ) design, his worked very well until... From what i read about the innovators gathering the 8" batch box is a monster ! two of those in your 90' could be the way to go.
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Post by malton on May 1, 2015 7:20:01 GMT -8
ya i have emailed rob before and after the problem. his design is a big influence in my design thoughts. he is going to rebuild it similar he said. he runs his allot. also i really like the pellet feeder made by zero fossil fuels. i want to copy him but on a larger scale. plus hes doing pelets. i think a similar version might work. www.youtube.com/watch?v=lkvI6Gxn1Roalt-nrg.org/ on the right is his stove
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Post by DCish on May 1, 2015 7:46:27 GMT -8
dcish some oil burners ive seen get a metal piece ( the piece can be what ever, having mass helps it stay going ) hot enough to ignite the oil and then it continues to heat itself Yeah, one I saw was nothing more than a pot made of a 3-4" section of thick pipe with a bottom welded on and some big bolts thrown in for additional surface area to vaporize from.
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Post by Donkey on May 1, 2015 15:58:16 GMT -8
Efficiently burning waste oil is a bit different from efficiently burning wood. Oil usually needs a surface to evaporate off of.. Have a look at waste oil burners.
I've got a friend that put a WVO drip in his rocket stove. It worked as long as there was wood burning in there too. As soon as the wood was gone to ash, the WVO would stop burning properly as well.
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Post by malton on May 4, 2015 9:20:09 GMT -8
ive looked at a bunch of oil burners for a couple of years. mostly on youtube. if it stayed colder longer i might get around to making one . the rmh im building in for 2 houors away in a colder area. one video showed one a guy built in a real cold area that was heating his shop. he basiclly got a brake drum hot and dripped oil on it. during the video he turned around a to show you his 4000$ comercial oil burner . he liked the one he built better.
either way i just thought/ wondered about using something to retain heat enough for the oil or ? to drop on and ignite.
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Post by ringoism on Jan 21, 2016 10:00:12 GMT -8
I too have been thinking of a waste oil feed, even have picked up a tank for it, but details not yet worked out. With the high heat levels would seem a good combination / good way to cleanly burn it. Occasionally have fooled around with waste oil added to other fuels - soaked into sawdust, combined with waste-cardboard bio-mass briquettes, or even simply poured over my 4' high stack of firewood a couple months before winter. All do really enhance the burn and would seem to get you a lot more BTU's, but mostly untested as yet with my rocket setup; Hope to get to that later.
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