On Thursday, 9 April 2020 19:25:15 UTC+1, Tim+ wrote:
A branch has come off a larch at the end of our garden. I have a wood
burning stove so Im always on the look out for good wood to burn.. The
question is, is it good, at least from a soot and creosote/tar point of
view?

Ive read that it burns €œhot€� which I guess is good from the point of view
of not clagging your chimney with residues but it seems very resinous and
Im not sure whether lots of resin equates to more creosote & tar
deposition. My gut feeling is that it will but maybe this is offset by the
€œhot€� burning?

Any thoughts?


Tar and soot is caused by badly designed stoves causing quenching, ie removal of heat from the combustion gases before combustion is complete.
Combustion then stops prematurely leaving unburned fuel vapours. (which condenses out in the chimney)
http://eyrie.shef.ac.uk/will/eee/cpe630/comfun8.html

Wet/damp wood doesn't help either, also causing quenching and using up energy to evaporate it off.

All wood is suitable for burning. Dense heavy wood is the best from storage and stoking point of view. (More energy dense.)