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Post by shilo on Dec 22, 2014 11:22:28 GMT -8
what do you say about this heater?
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Post by pinhead on Dec 22, 2014 12:57:03 GMT -8
I don't see anything.
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Post by shilo on Dec 22, 2014 14:43:22 GMT -8
sorry, i will attach the file soon
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Post by shilo on Dec 24, 2014 18:59:27 GMT -8
170 system Two half barrel in each floor (One bell in each floor) isolated chimney between the floors Attachments:attachment.skp (123.55 KB)
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Post by shilo on Dec 25, 2014 8:41:22 GMT -8
anybody?
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Post by peterberg on Dec 25, 2014 9:03:47 GMT -8
Could be done, I'd say. By 170, do you mean 170mm diameter of the riser? You need to calculate the internal surface area of the bells. It looks like it's too large as drawn but according to my calculation the two half barrel bells are 3.6m2 together. Add the barrel around the riser and this would be about 5.5m2. A double bell in an all steel 170mm system could be as large as that. When you want the benches to be cobbed in there's a pretty good chance it will work right.
The top bell isn't a bell, the exit opening should be close to the floor for that.
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Post by shilo on Dec 25, 2014 9:40:29 GMT -8
"The top bell isn't a bell, the exit opening should be close to the floor for that" Of course. This is only a general sketch
yes, 170mm hitriser.
thanks!
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Post by shilo on Dec 25, 2014 9:45:01 GMT -8
"isolated chimney between the floors" Is it really essential?
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Post by shilo on Dec 25, 2014 9:49:16 GMT -8
"A double bell in an all steel 170mm system could be as large as that" are you consider it as a double bell? you don't count the vertical barrel?
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Post by Daryl on Dec 25, 2014 10:50:12 GMT -8
There is another thread where Peter discusses how this can be done. I think the original poster was showing an example of a two story standard masonry stove with a bench on the second floor. I know it is on here somewhere.
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Post by DCish on Dec 25, 2014 11:24:54 GMT -8
"isolated chimney between the floors" Is it really essential? If not isolated it will radiate heat and thus be counted as part of the ISA. You would have to decide if that is the place you want to dissipate heat (choice may be influenced by material cost). If it is not isolated then you'd have to reduce ISA somewhere else to compensate.
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Post by shilo on Dec 25, 2014 12:08:16 GMT -8
"isolated chimney between the floors" Is it really essential? If not isolated it will radiate heat and thus be counted as part of the ISA. You would have to decide if that is the place you want to dissipate heat (choice may be influenced by material cost). If it is not isolated then you'd have to reduce ISA somewhere else to compensate. 170mm=8m isa 8X0.85 (double bell)=6.8 6.8-5.5=1.3m unused 17cmX3.14X230cm=1.2m bingo
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Post by peterberg on Dec 25, 2014 12:53:04 GMT -8
Insulating the pipe between the floors was your own idea. But I would say it's a good idea.
The benches could be built as bells, yes. One on the ground floor and one on the second floor, that's what you wrote. The barrel could be also a bell whith the top gap between riser and barrel quite large. Let's say 4 ft? Otherwise, all the gases will follow the same path and no segregation of colder gases will take place.
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Post by peterberg on Dec 25, 2014 13:11:37 GMT -8
170mm=8m isa 8X0.85 (double bell)=6.8 6.8-5.5=1.3m unused 17cmX3.14X230cm=1.2m bingo No bingo, I'm afraid. First, ISA for a 170mm single bell system is 7.69 sq m provided the heater is masonry throughout. And the barrel on it's own is shedding heat faster than the benches so you have to compensate for that. You have to do some more calculation and take necessary slack into account, some of that for the chimney. Is that a really good one or just some old stack at the outside of the house? I am puzzled a bit by the units you mention. Do you mean square meter or just meter as in length?
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Post by shilo on Dec 25, 2014 13:35:17 GMT -8
Thank you very much! I really appreciate it!! how do you calculated 7.69? The chimney is new of course square meter what abaut a singel wall chimney and put it into the wall with an air gap?
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