[Gasification] Why would you want to make heating grade woodgas?

[David Coote]

There's a heap of efficient wood burners (fuelwood, chip or pellet) on 
the market that can convert wood to thermal energy at over 90% thermal 
efficiency LHV. Some of the new condensing systems are even claiming 
over 100% on LHV.

So why would you want to go through a distinct gasification process to 
produce gas for subsequent combustion in a burner? If you're methanating 
the gas like the system developed at Gussing to bring the wood gas up to 
the standard suitable for addition to the natural gas grid that makes 
sense from a technical perspective. But if you were just wanting to turn 
the woodgas into space heat?

Cheers

David