Ok, have finished my dome and am about to start the entry/vent arch but I just have a few questions first. Any help would be greatly appreciated.
I gather from previous posts, that having a vent opening which narrows to half its original size is optimal. I am planning to have my arch opening 18" x 9" which will narrow to an approx. 9" x 9" flue. By my calculations, this gives me the correct ratio. (please, feel free to correct me). The vent dimensions are pretty much the entire opening x the length of one brick. I see most ovens only have a vent depth of about half a brick. Is a 9" vent depth too much and will it affect the ability to draw well, or is the reason most people only use half a brick depth purely for space considerations?
My last question has to do with the height that this transition happens over. I am planning my vent height to be approx. 7" or 8", then chimney on top. Is this vent too short, or as long it narrows by half then the height isnt realy a question.
Thanks for any help.
I gather from previous posts, that having a vent opening which narrows to half its original size is optimal. I am planning to have my arch opening 18" x 9" which will narrow to an approx. 9" x 9" flue. By my calculations, this gives me the correct ratio. (please, feel free to correct me). The vent dimensions are pretty much the entire opening x the length of one brick. I see most ovens only have a vent depth of about half a brick. Is a 9" vent depth too much and will it affect the ability to draw well, or is the reason most people only use half a brick depth purely for space considerations?
My last question has to do with the height that this transition happens over. I am planning my vent height to be approx. 7" or 8", then chimney on top. Is this vent too short, or as long it narrows by half then the height isnt realy a question.
Thanks for any help.
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