cab
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Post by cab on Feb 14, 2011 5:59:09 GMT -8
yes, I have read things through. The only reference I saw to the syphon depth was one post where you mentioned building it 8" deep. 4" deep, and level, followed by a comment that it didn't work well at all. I assumed that comment was about the level configuration. I couldn't determine what differences were noticed between the 8" and 4" configuration, if any, and which functioned better.....
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Post by peterberg on Feb 14, 2011 7:29:24 GMT -8
cab, None of those 8" deep and level configurations seems to function in the disired way. I've tried different sizes of syphon, best was 4" x 8". Even 3.15" x 9.84" wasn't as good.
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cab
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Post by cab on Feb 14, 2011 15:43:35 GMT -8
your 4" x 8" is 4" deep below the entrance and the 8" dimension is  If I understand correctly, the cross sectional area of the syphon is half the area of the 6" diameter flue...? |
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Post by peterberg on Feb 15, 2011 1:40:10 GMT -8
Oh, come on...
The dimensions are summed up in earlier posts, I'd suggest you read that again.
No, your understanding of the subject is completely and utterly incorrect.
Please read the threads!
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cab
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Post by cab on Feb 15, 2011 5:21:19 GMT -8
Oh, come on... The dimensions are summed up in earlier posts, I'd suggest you read that again. No, your understanding of the subject is completely and utterly incorrect. Please read the threads! As I said, I have read through the prior posts. There have been so many iterations it is difficult to sort it out, that and no clear convention for specifying the dimensions of the syphon make it a bit difficult to understand exactly what you are working with. All I see are graphics with no dimensions on any of them. My apologies for my confusion. Sorry to put you out by asking for clarification. |
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Post by zoidberg on Feb 15, 2011 11:52:52 GMT -8
I suck at visualizing 3D objects, so I set to make a Sketchup model of the syphon in order to have a better idea of how it looks like. Peter, would you confirm that it is correct the way it is ?
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cab
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Post by cab on Feb 15, 2011 13:22:04 GMT -8
I suck at visualizing 3D objects, so I set to make a Sketchup model of the syphon in order to have a better idea of how it looks like. Peter, would you confirm that it is correct the way it is ? Thank you very much! The opening dimension is 4" x 8"? Really appreciate you taking the time to clarify.... |
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Post by zoidberg on Feb 15, 2011 22:45:36 GMT -8
Thank you very much! The opening dimension is 4" x 8"? Yes, it's 8" wide if I understood it right. Really appreciate you taking the time to clarify.... Actually I did it for myself, but I'm glad you like it  Anyway I would like Peter to confirm that I got it right. Unfortunately I have nowhere to post the Sketchup model proper, if somebody suggests a place to hang it up I am willing to share. |
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Post by peterberg on Feb 16, 2011 1:33:41 GMT -8
Peter, would you confirm that it is correct the way it is? You've got it right, conform this picture. You've drawn only the left half, maybe it's clearer to expand it another 4" to the right? The beveled side under the opening is not mandatory. Only done to gain 2 inches, because of restrictions at the back of the bell. The later iterations were flat at the front again and with a 6" higher heat riser. |
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Post by zoidberg on Feb 16, 2011 1:51:45 GMT -8
You've got it right, conform this picture. You've drawn only the left half, maybe it's clearer to expand it another 4" to the right? The beveled side under the opening is not mandatory. Only done to gain 2 inches, because of restrictions at the back of the bell. The later iterations were flat at the front again and with a 6" higher heat riser. I ripped the model open just to show the measurements and exclusively for the purpose of exporting the pic, otherwise I did make the model whole. On the other hand, maybe painting the other half translucent would add clarity. Edit: nope, translucent looks lousy and it's difficult to show internal dimensions anyway. |
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Post by peterberg on Feb 16, 2011 12:58:58 GMT -8
Some weeks ago I'd start with a new implementation of the rocket bell. The upstream channel in the first bell is beside the firebox instead of behind. There's a choice in having the door left or right from the middle.  Here is the link to the drawing. This one is made with Sketch-Up version 8, and here is the link where to find the program. Beware, the Pro version is time limited. The drawing is organized in horizontal layers of bricks. It is easy to use the "move" tool in Sketch-Up to take them out one by one. This implementation of the rocket/bell is a little bit larger than before. Mainly as the result of the experience of two guys, in the Netherlands and Belgium, whom have built their own versions. The measurements are in millimeters, this is where to find a comprehensive set of calculators to change it into imperial values. |
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cab
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Post by cab on Oct 15, 2011 6:34:44 GMT -8
I notice you mention several times that your heaters are built to burn soft woods. Any idea how hard woods would burn in them or what you would need to change to burn hardwoods as well?
Any idea how these heaters would work if the flue outlet in the firebox exited out a side wall instead of the rear wall?
Thanks....
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Post by peterberg on Oct 16, 2011 0:30:43 GMT -8
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cab
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Post by cab on Oct 16, 2011 5:51:54 GMT -8
So it would seem the design as is works fine with hardwoods.....
Due to space constraints, I would like to build one of these that exits the firebox out the right side wall , into bell, then exhausts out the opposite side through a second bell that sits on top of the firebox and first bell. It would be slightly wider than it is tall...
Please keep us posted on the progress of the guy in Belgium....
Thank you for your reply....
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Post by mintcake on Nov 14, 2011 10:31:44 GMT -8
Due to space constraints, I would like to build one of these that exits the firebox out the right side wall into bell, then exhausts out the opposite side through a second bell that sits on top of the firebox and first bell. It would be slightly wider than it is tall... Are you restricted in the front-back distance too? It looks like you've got a more traditional rocket in there than Peter's rocket siphon arrangement (which is aimed at batch-loading, rather than continuous fiddle, if I understand right). Peter's siphon exits to the back. I guess it might be possible to have the door on the side, but I don't know what'd happen with the air pipes, etc. Your sketch has a few areas I would make differently: 1. The riser from bell 1 to bell2 should end as soon as it enters bell2. That means that if there's cold air being drawn in after the burn then it doesn't need to mix with the hot air above it. 2. The mini-bell you've got at the exit looks like a good way of making sure you only get the coldest gases from bell2 into the flue, but if the flue connection were at the bottom rather than half way up then you could get some more heat stored in there too. |
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