Wood burning stove- wood question

Wood burning stove- wood question

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Simpo Two

85,529 posts

266 months

Thursday 23rd October 2014
quotequote all
3' girth not height I suspect...

Pesty

Original Poster:

42,655 posts

257 months

Thursday 23rd October 2014
quotequote all
Tampon said:
I am all for "if it burns, it burns" in my wood burner, but I wouldn't take that article as gospel. Bio of the author

"Karie Fay earned a Bachelor of Science in psychology with a minor in law from the University of Arkansas at Monticello. After growing up in construction and with more than 30 years in the field, she believes a girl can swing a hammer with the best of them. She enjoys "green" or innovative solutions and unusual construction."

She says things like "supposed 'professionals'" and advocates drying wood for 6 months before burning it. The reference she uses says that it is unseasoned would that creates creosote, so not exactly "well researched."

Not great credentials to bank a chimney fire on.

I would say get a moisture metre and when you get near 20%, wack it in, you will be amazed that sometimes some wood that you think would be ok to burns turns out to have a 30% odd moisture content. Nothing worse than wacking it in and hearing the sizzle of boiling water coming out of the logs.
good point.

but its on and burning well smile



Tampon

4,637 posts

226 months

Thursday 23rd October 2014
quotequote all
Pesty said:
good point.

but its on and burning well smile
"if it burns, it all really been burnt"

Pesty

Original Poster:

42,655 posts

257 months

Thursday 23rd October 2014
quotequote all
again in English ?smile

Tampon

4,637 posts

226 months

Thursday 23rd October 2014
quotequote all
Pesty said:
again in English ?smile
Doh!

Ready.

captainzep

13,305 posts

193 months

Thursday 23rd October 2014
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I took down a conifer a few weeks ago. It won't be burned until next winter now. I'll be interested to see how well it goes. I think that's part of the pleasure of having a woodburner, watching the flames, listening to the sounds they make and feeling the temp with different kinds of wood. It might be that I split it smaller and use it to put on top of kindling before the bigger logs go on.

I'm fortunate to have quite a lot of seasoned oak and ash this winter with a few hazel and blackthorn/hawthorn logs. Meeting some old family friends who are getting into their 80's I've been told I can take any wood I want if I help thin their developing 25yr old woodland, so looking forward to some crisp blue-skied winter weekends to replenish the store. It's better than going to the gym...

PugwasHDJ80

7,529 posts

222 months

Friday 24th October 2014
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RedLeicester said:
dirkgently said:
PugwasHDJ80 said:
My little 18" bar managed to cut up a 3 foot oak tree that weight in at over 15 tonnes last year- we now have enough wood to last 4 winters!
Was it a very thick 3 foot oak, or made out of very dense wood like a neutron oak.?
Either way it sure as hell wasn't 15 tons!
lol it wasn't 3 foot high, but 3 foot wide- at the base of the tree (which someone else had felled) I plunge cut all the way round but was still left with a 3" bit In the middle I couldn't reach- that was a pain in the arse!

the 3foot diameter 40ft trunk definitely weighed more than 15tonnes smile

dickymint

24,383 posts

259 months

Friday 24th October 2014
quotequote all
PugwasHDJ80 said:
RedLeicester said:
dirkgently said:
PugwasHDJ80 said:
My little 18" bar managed to cut up a 3 foot oak tree that weight in at over 15 tonnes last year- we now have enough wood to last 4 winters!
Was it a very thick 3 foot oak, or made out of very dense wood like a neutron oak.?
Either way it sure as hell wasn't 15 tons!
lol it wasn't 3 foot high, but 3 foot wide- at the base of the tree (which someone else had felled) I plunge cut all the way round but was still left with a 3" bit In the middle I couldn't reach- that was a pain in the arse!

the 3foot diameter 40ft trunk definitely weighed more than 15tonnes smile
You should've planked it and sold it - you'd be sitting on enough cash to buy Ash logs for 15 years wink

Bit of a Unit

6,721 posts

198 months

Friday 24th October 2014
quotequote all
captainzep said:
I took down a conifer a few weeks ago. It won't be burned until next winter now. I'll be interested to see how well it goes. I think that's part of the pleasure of having a woodburner, watching the flames, listening to the sounds they make and feeling the temp with different kinds of wood. It might be that I split it smaller and use it to put on top of kindling before the bigger logs go on.

I'm fortunate to have quite a lot of seasoned oak and ash this winter with a few hazel and blackthorn/hawthorn logs. Meeting some old family friends who are getting into their 80's I've been told I can take any wood I want if I help thin their developing 25yr old woodland, so looking forward to some crisp blue-skied winter weekends to replenish the store. It's better than going to the gym...
Going through some seasoned conifer in ours right now. Huge flames! I now have a stash of small conifer logs behind a chair in the lounge for throwing on whenever we have visitors who want the full log burner effect without face melting heat.

Dr Mike Oxgreen

4,128 posts

166 months

Friday 24th October 2014
quotequote all
I find softwood is great, precisely because it burns hot and fast. I generally light the stove at about 5pm, and it only has a few hours to heat the room before we go to bed - so I want it to pump the heat out as fast as possible, rather than burning slow and steady.

I burn a mixture of artificial heat logs (which I think are a mixture of soft and hard woods), plus pallet wood (mainly very dry softwood), and a mixture of soft- and hardwood logs. But I run my stove pretty damn hot, and chimney sweeps always comment on the nice dry, powdery nature of the stuff that comes out of my flue.

So I'm 100% convinced that burning softwood is absolutely fine, if the wood is nice and dry and you run the stove hot.


Edited to add: Wouldn't want to burn softwood on an open fire though (except perhaps with a decent fire guard); it pops and spits quite a lot.

Edited by Dr Mike Oxgreen on Friday 24th October 18:07

Rosscow

8,774 posts

164 months

Friday 24th October 2014
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PugwasHDJ80 said:
the 3foot diameter 40ft trunk definitely weighed more than 15tonnes smile
I doubt it, to be honest smile

Green oak normally comes in at around 940kg per m³.

A cylinder with a radius of 460mm (diameter of approx. 3') and length of 12192mm (approx. 40') will have a volume of 8.11m³.

So your trunk weight = 8.11 x 940 = 7623.4kg.

Approximately 7.6 tonnes smile

Simpo Two

85,529 posts

266 months

Friday 24th October 2014
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And on top of all that, have a flue thermometer so you can judge the fire by the actual heat output not the size of the flames.

PugwasHDJ80

7,529 posts

222 months

Friday 24th October 2014
quotequote all
dickymint said:
You should've planked it and sold it - you'd be sitting on enough cash to buy Ash logs for 15 years wink
unfortunately it was down in a valley and had already been sawn into one metre chunks

otherwise we absolutely would have done....

RedLeicester

6,869 posts

246 months

Friday 24th October 2014
quotequote all
Rosscow said:
PugwasHDJ80 said:
the 3foot diameter 40ft trunk definitely weighed more than 15tonnes smile
I doubt it, to be honest smile

Green oak normally comes in at around 940kg per m³.

A cylinder with a radius of 460mm (diameter of approx. 3') and length of 12192mm (approx. 40') will have a volume of 8.11m³.

So your trunk weight = 8.11 x 940 = 7623.4kg.

Approximately 7.6 tonnes smile
Merchantable weight for a full oak with 36" breast diameter would be around 8.2tons assuming it was 120ft tall.

120ft.

So a third of that and weighing in trunk only (circa -25% of total to allow for branching / snedded load and chipped foliage) would bring that down from 8.2 to 2.73, minus the limbing so ending up around 2 tons.

Pesty

Original Poster:

42,655 posts

257 months

Friday 24th October 2014
quotequote all
Simpo Two said:
And on top of all that, have a flue thermometer so you can judge the fire by the actual heat output not the size of the flames.
Oh don't worry about that. I have all the gadgets I even have one of those fans. Two chainsaws with all kinds of gubings.

Logging mates. Log holders axes. Splitters, mauls.


I thought I was saving money lol.

Simpo Two

85,529 posts

266 months

Friday 24th October 2014
quotequote all
And your children are called Fennel and Ramekin hehe