Guys, I roast coffee on a VERY small scale for sale at the local market where we sell our produce etc., and I've lately been wondering about roasting in a rocket powered black oven. Coffee roasting produces quite a bit of smoke, and I've long thought, wouldn't it be cool to route that smoke back into a batchbox to be burned in the riser, thus the roasting coffee would actually provide some of its own heat in a cyclical fashion. So then I was thinking, could I make a secondary secondary air inlet that actually pulls from a post-riser black oven in the cookstove I'm building? I'm not sure just yet how that would look in practice, just curious if anyone has had a similar idea and already tried something like this, and what your results were...Thanks.
Interesting idea. I am interested in all things coffee.
I suspect that a black oven would feed back a fair amount of CO2 especially since roasting coffee releases a LOT of CO2 according to what I have read. This might not allow air from that source to work as secondary air. As Eric says, I would love to see an actual working model.
Roasting my own coffee has been a personal goal for a while and I would be interested to see what you come up with. The biggest drawback I see to roasting my own is the smell that wafts around the neighborhood wherever there is a coffee roaster. I think it is better than most industrial applications, but it can still be a little objectionable. The advantages of a wood-fired roastery are obvious though. Coffee roasting seems to be very energy intensive.
The downside to wood-fired roasting is a significant loss in control of temperatures, and therefore consistency. I have postponed any further thought on this project until I finish several other more urgent things that I've already started.
You could be right. Coffee roasting does require a bit narrower range to hit consistent roasts, since the difference between a light and dark roast is really only a few degrees of bean temperature. That said, I have not really run the tests you mention, I just have assumed from watching my stove at home that the heat output would be rather hard to control to that level of consistency. I could be utterly wrong.
There are wood-fired roasters out there, but I know absolutely nothing about their construction. I suspect that they use a steel oven and circulate flame around that. Kind of like the Aprovecho low mass rocket bread oven.
martinm: any one here with info \ experience with heat (from a mass heater) distribution with ducts throughout two storey house ?
Sept 8, 2018 22:58:52 GMT -8
padica: Good morning, this is a wonderful subject, please someone can help me with the theme of double and triple combustion, how it is achieved, theory and design, thank you
Sept 15, 2018 7:13:40 GMT -8
wiscojames: I'm afraid you won't get a response to such a vague question - I suggest reading through some of the threads related to your questions before asking for an explanation. People will be very generous with their knowledge if your question is more specific.
Sept 18, 2018 4:48:00 GMT -8
daniel: in my experience as I am working now on something of that nature, I have thought of making a heat exchanger and distributing the heat through vents using a slower fan. Now after a few years I realize that mass heaters give out primarily radiant heat, for
Nov 30, 2018 12:48:38 GMT -8
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Dec 16, 2018 18:10:49 GMT -8
vesuvius: High Temperature Glass options,
Jan 4, 2019 16:28:17 GMT -8
vesuvius: Do any of you have experience with using the glass from home oven doors on a rocket stove? I'd like to have a viewing port on my stove but don't want to fork out for new ceramic glass. Any thought as to whether it would take the heat of a rocket stove?
Jan 4, 2019 16:30:40 GMT -8
yaya: you dont need the blowair for that temp..
Jan 13, 2019 16:43:57 GMT -8
flybywire: Glass window from an old washing machine is designed to take high temps. Cheap solution to your need.
Jan 27, 2019 0:10:58 GMT -8
coastalrocketeer: Anyone posting in this shout box... if you have something you want people to see and respond to, create a thread in the appropriate forum section... this is not the place to have a discussion... it is for short announcements
Feb 7, 2019 0:11:23 GMT -8
coastalrocketeer: you won’t likely get replies to questions here, and it is not a spot that makes holding an ongoing discussion possible...
Feb 7, 2019 0:12:22 GMT -8
TexasGonzo: Sooooo glad I found this site! Its always rewarding to find such a super group of folks! To any and all, feel free to PM me anytime. Thanks for having me!
Mar 11, 2019 18:56:41 GMT -8
jlmtech: GADGET: CONSIDER USING A JET PUMP INSTEAD OF A BLOWER FAN TO INDUCE DRAFT; NO CLOGGING.
Mar 26, 2019 8:19:28 GMT -8
michaelegan: i am unable to open the sketchup files on my mac. I used sketchup a few years back but apparently the company now requires a subscription. does anyone have any advice/instructions on how to use the program or how to view pictures without spending money?
Aug 20, 2019 18:41:48 GMT -8
mannytheseacow: michaelegan: download AutoCAD student version for free... import .SKP
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topbaza: hi everyone, been searching all over net and this is were i need to be i think!!
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anounaki: Hi, why I cant upload photos when I make new tread to this forum?
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ahansen: photos under 1 mb not possible?
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