Every application will be different, every stove will have it's requirements.. As a general rule: The burn tunnel should be as short as possible. I believe the book says that the burn tunnel should be no more than half as long as the heat riser is tall.. We figured that out pretty quickly. I've seen longer that all that work ok, but I think it's inadvisable. Shorter is better.
The heat riser should be as tall as you can get it within reason. Though it seems that taller than 2 1/2 to 3 feet is unnecessary. It all depends on how well insulated the works are how long the burn tunnel has to be and all that.. Again, I'd say only as long as it needs to be and no more. Too long and you will be loosing heat to the stove, too short and you won't create enough heat to burn all the fuel and provide draft.
The (effective) heat riser height should be measured from the top of the wood feed (air intake), so you will want that as low as possible.
scooterocca: Cold, wet and windy down here. What about over there??
May 11, 2015 18:57:49 GMT -8
ericvw: Been above seasonable temps... Hi 70's, 80's,90 today- dry here in southwest Virginia! Rain will come inevitably! Nice chatting with someone on the other side of the world!
May 11, 2015 19:50:18 GMT -8
scooterocca: We needed rain badly and now we have had 4 inches so it's good. Bad about your guys down Texas way with the Hurricane/Tornadoes.
May 11, 2015 20:03:09 GMT -8
Daryl: Do you ever take a trip on the Parkway, Eric? It is a beautiful ride.
May 12, 2015 4:35:12 GMT -8
Daryl: Welcome, Scooter
May 12, 2015 4:35:21 GMT -8
scooterocca: Thanks Daryl for the welcome and a big gooday to you.
May 12, 2015 13:00:24 GMT -8
ericvw: Many, many times, Daryl. It is beautiful.
May 12, 2015 16:43:44 GMT -8
scooterocca: So who is Donkey
May 13, 2015 19:01:05 GMT -8
Daryl: The King of the World!!! (Sorry, I couldn't help being goofy.) Check out this thread...http://donkey32.proboards.com/thread/1679/june-2014-natural-building?page=1&scrollTo=17296
May 14, 2015 4:39:59 GMT -8
dams: Hi everybody. I'm Damien, from Belgium. I've been reading a lot about mass heater and found your site through a friend who made one and told me about you. It's amazing all you've shared, thank you. I'll come soon back !
May 15, 2015 4:30:55 GMT -8
Daryl: Welcome, Damien!
May 15, 2015 5:11:07 GMT -8
Daryl: Happy Friday, Everyone!!!
May 15, 2015 8:15:30 GMT -8
ericvw: Y'all shout out a little more often, eh?
May 20, 2015 18:41:13 GMT -8
Daryl: Is work over yet? I want to go for a walk in the woods!
May 21, 2015 5:09:57 GMT -8
Daryl: F the F chord!!! Ha! Ha! That's my shout out for this morning.
May 22, 2015 4:34:10 GMT -8
keithturtle: Bar all six on top fret to build strength; work the Bminor at the same time to build dexterity. It gets easier
May 22, 2015 22:25:51 GMT -8
Daryl: Thanks, Keith! I'm switching chords and...cursing & venting & sharing & gabbing. Ha ha. It's all good. (Eric likes his shout outs.
May 23, 2015 5:32:50 GMT -8
malton: rabbit tastes good with just salt and pepper cooked on fire brick!!
May 23, 2015 18:55:48 GMT -8
wiscojames: no pan, direct cooking on the firebrick? interesting...
May 27, 2015 4:31:51 GMT -8