RonMello Posted January 18, 2012 Report Share Posted January 18, 2012 I have converted an old electric 7 cu ft to downdraft gas. I have built the chimney inside and was wondering if it is large enough? it is 3" x 6" 18ci. The burners are 2 Ransom b3's in 4" holes. I suppose that means a 24" ci flue? Link to comment Share on other sites More sharing options...
TJR Posted January 18, 2012 Report Share Posted January 18, 2012 Simon Leach has some great videos on converting old old kilns to gas. Check them out! Go to Simon Leach Pottery on you tube and then check out the kilns section. Pretty clear explanations and shots of the kiln loading and firing. TJR. He has over 700 great videos. Link to comment Share on other sites More sharing options...
Rakuken Posted January 19, 2012 Report Share Posted January 19, 2012 I aslo converted a 7 cu. electric kiln to gas but to an updraft. I'd like to see pictures of yours. Here is a picture of my kiln. Aloha, Ken http://www.flickr.co...s/67879015@N05/ Link to comment Share on other sites More sharing options...
Ben Posted January 19, 2012 Report Share Posted January 19, 2012 It is said that Robin Hopper once had a shirt that read "try it and see" that he wore to conferences. I think that applies here. Assuming that the burners work properly you should be able to adjust it from fully reducing to fully oxidising if the inlet and outlet flues are sufficient. If the outlet flue is too small you may not be able to get it to oxidise fully. It would the same as if you had the damper pushed in cutting off the secondary air at the burner ports. Now, if you just want to stick to purely theoretical calculations compare your kiln to commercially available designs with similar size and burner BTU ratings. How do your kilns flue sizes compare? I still say it would be more fun to just fire that baby up! Ben Link to comment Share on other sites More sharing options...
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