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Post by Vortex on Dec 17, 2016 12:19:01 GMT -8
This thread is great. Many thanks to Vortex, patamos, et al. for the great info. I am thrilled about finding this and I will be starting the foundation work for putting one of these in my house (balmy Winnipeg, MB) starting in the new year. I am a pretty avid baker and was trying to consider how to fit an oven into this design. I've seen some heaters done by alex chernov where he uses the baking oven as the first bell. One of the videos out there shows quite a bit of combustion taking place in it and I am wondering if some air leakage around the baking door might be providing the secondary air needed for this. Given the sketch here, do you think locating the baking oven/bell immediately on top of the unit would be possible? If anybody has experience with this, is there a minimum or maximum size the bell should be for draught purposes? Hi fzurzolo. I've just recently finished one with a black oven as a bell on top of the fire box. It's my first with a separate oven and is still drying out so hasn't been properly tested yet. The top of the vortex core has a small secondary burn chamber above it (4.5" high), that exits at the back top up into the oven which exits out the top front. The flue gases then travel down the outsides of the oven and firebox and come back together underneath the ashbox. I would recommend an airtight oven door, the secondary air should be coming in around the throat. If you have a glass oven door you will see secondary combustion happening in the oven at the height of the burn. I'm thinking of putting a full American style grate with a hob to take the vertices heat and run it through bells. This stove is very close to that concept. I need good draught as the house is surrounded by trees taller than the chimney and that's a major problem. So ability to clean regular is a major part of the plan. Should I start this design in a separate thread? Nollaig Shona Dhiabh as we say in Irish Gaelic! Hi Tom, I'm not sure what you mean by "American style grate with a hob to take the vertices heat". can you explain? Are you using an existing chimney or installing new one? A straight insulated chimney is the best. Avoid flexi-pipe. If you're building a Vortex stove you're welcome to share it here, or start a separate thread if you prefer. Are you in Ireland? I'm in West Cork. |
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Post by fzurzolo on Dec 20, 2016 14:06:26 GMT -8
Ok sounds good. let me know how that oven works once you get it going.
Is there a reason why you exit out the top of the oven section instead of the bottom (or lower down on the wall)? I'm just thinking about having the oven volume act as a bell, but with a top exit that doesn't really happen as far as I understand. But you're the builder and I'm just the "soon to be builder" so I'll take your insight any day  |
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Post by Vortex on Dec 21, 2016 3:46:31 GMT -8
The oven is actually a bell that exits at the bottom, it's just happening on the outside of the oven side walls. Otherwise when you opened the oven door it would vent the hot flue gases into your face.
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Post by 1967gto on Dec 21, 2016 8:32:19 GMT -8
Vortex,
When will you have pictures and maybe a video up?
When will you be firing it up?
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Post by Vortex on Dec 21, 2016 9:10:26 GMT -8
I'll be going there sometime over Christmas, will get something up then.
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i0799
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Post by i0799 on Dec 22, 2016 3:58:52 GMT -8
你好！很高兴可以看到你分享的火箭炉。希望可以看到施工图或者视频资料！谢谢！
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Post by pinhead on Dec 22, 2016 6:21:58 GMT -8
你好！很高兴可以看到你分享的火箭炉。希望可以看到施工图或者视频资料！谢谢！ English: "Hello there! It's nice to see you share the rocket stove. Hope to see the construction plans or video information! Thank you!" |
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Post by fzurzolo on Dec 23, 2016 6:41:34 GMT -8
The oven is actually a bell that exits at the bottom, it's just happening on the outside of the oven side walls. Otherwise when you opened the oven door it would vent the hot flue gases into your face. Right . . . good point! Probably best to avoid all face venting of flue gasses
Looking forward to your tests. Merry Christmas/Happy Holidays to all!
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Post by 1967gto on Jan 11, 2017 18:50:15 GMT -8
Hey Vortex (or anyone else),
If you cast this per your plans, would skinning it with brick make the mass too thick? I was reading with a regular masonry heater, that if the mass is too thick it makes the stove inefficient.
Thanks
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Post by Vortex on Jan 12, 2017 2:18:29 GMT -8
I wouldn't recommend it, especially not on a stove this size. The more mass you add to the skin, the slower the flywheel effect (the time it takes for the heat to travel through the mass and radiate into the room) and the lower the temperature that mass will reach (because the heat would be distributed through a greater volume of material).
Also if you add more mass around the firebox it will affect it's ability to gasify, because the firebox wont reach a high enough temperature.
You could plaster the stove like Patamos does, or make a metal skin of steel, stainless or copper like I have, or even tile it. The new version I'm working on has a heavy structural steel body with the mass dry stacked inside. I hope to have something posted up on it in the next few weeks.
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fig
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Post by fig on Jan 12, 2017 7:26:47 GMT -8
Hi Guys,
I stumbled across this thread last night and haven't been able to pull myself away from it. I have read it a few times and would certainly like to copy this brilliant stove.
I have been a pellet burner for the last 10 years. I live in an old small uninsulated splitfaced block farm cottage and propane got so high I was spending a fortune just keeping in somewhat bearable during the winter. I traded a car for a pellet stove and was hooked. I also have a few wood stoves. Sometimes I burn a little corn with the pellets too. The sad part is pellet prices are much more then when I started burning them.
I was thinking if I supplement my heating with a stove such as this I could cut my pellet expense back some. My cookstove is has also broke recently so it only makes sense to build one of these.
I also wanted to mention what a grand camaraderie you gents have here. It's quite nice to see how everyone mingles so well here. The thread really seems indicative of the subject. It's a pleasant change from some other forums I've been.
One of the reasons I'm posting is to ask Vortex about the plans. I have clicks to download the zip file and I get a 404 page does not exist error. This may be something on my end. I'm not very computer savvy I'm afraid. I would greatly appreciate if there were some way I could get the plans. As I'm new to this subject I've got a lot of catching up to do. I'll certainly have to have to research the lingo. There's some terms I'm unfamiliar with. Thank you gents.
Stay warm,
Fig
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Post by Vortex on Jan 12, 2017 9:50:47 GMT -8
Sorry about that, Fig.
I don't know what happened to the zip file. I've re-uploaded it to my server and the link is working again now. The pdf link was working but not everyone's computers can open them.
The plans are mostly for casting the stove in pieces. I went that route because I was planning to build a lot of them and I thought it would save time. Just building one for yourself you can do a lot of it from fire bricks, then you only have to cast the parts of the firebox that are too large to make from brick.
Let us know how you get on.
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fig
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Post by fig on Jan 12, 2017 15:13:54 GMT -8
Vortex
Thanks very much. I'm afraid I can't open pdf's either so I will cheerfully download the zip file. Are there dimension included and patterns for laying the blocks? As an newbie I'm not very clear on calculating those things, or if it's even that critical? I wonder approximately what the weight is. I may need some floor support.
Stay warm
Fig
Update: still no luck. It must be on my end. I'm trying to download to my android phone which is new to me. I've only had a Windows phone before so I'll have to do some research and try to sort this out.
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Post by Vortex on Jan 13, 2017 2:56:16 GMT -8
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fig
New Member
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Post by fig on Jan 13, 2017 6:10:40 GMT -8
Thanks....that worked perfect! I have a cast iron cooktop off of a Logwood stove that has the lift off burners. I was thinking about using this for the cook top portion but I wonder if it would be a bad idea as It isn't airtight due to the fact that the rings lift off? I may also use the door off of It as an access to the back side, thoughts?
I also have a question about the oven. I see the wonderful door in hour pictures but I don't see a place for it in the prints. I must be overlooking something?
Stay warm.
Fig
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