volume of logs needed for 1 ton of chip biomass

[TreeAb]

Hi all

 

I keep getting asked "what tonnage of logs do you need for one ton of woodchip for biomass boilers?"

 

yeah I understand pretty much depend on the size of the logs chipped etc but is there any one out there who chips for biomass who can give me a rough guide on the tonnage needed per ton of wood chip.

 

cheers

[Busy Daddy]

Is this a trick question ?

[Treeworld]

Surely 1 tonne of logs chipped makes 1 tonne of chip, unless by some strange occurance it changes density. Reminds me of what weighs more a tonne of feathers or lead? ;-)

[Busy Daddy]

I think it is 1 tonne of timber is something like 4 cube 0f chip , but this has lots of variables

[TimberCutterDartmoor]

1m3 roundwood becomes 3-4m3 chip

[dent]

we load a big jenz with tree surgery rings anything that wont go through a 6 inch chipper basically and its approximately 2-3 grain bucketfulls of rings to produce a tonne of g50 chipp more if the chip gets screened to 10mm this is ldigging out of a rough pile with a jcb so not neatly stacked in bucket