biomass for beginners

[devon TWiG]

200-250 tons for 12 houses sounds very extravagant to me !!!

[cornish wood burner]

250 tonne a year doesnt seem much for three boilers

 

That crossed my mind too . However only dozen houses so 20 tonnes / house which prob about right. Small boiler to provide summer heat and others to come online as demand increases. Possibly one as backup/ drying. Better not to put all your eggs in one basket as plenty of reasons for chip boilers to cause problems.

[cornish wood burner]

200-250 tons for 12 houses sounds very extravagant to me !!!

 

Scotland is sometimes chilly so I've heard

[biggarlogs]

There is a pub and school to add on possibly.not seen the plans yet .but will add info as it comes available. Early days

[biggarlogs]

No not chilly.......baltic

[openspaceman]

Small amount to make any appreciable investment for.

It costs us about £12 / ton to chip with 300 HP or about £10/ ton with 780 HP

Those costs include a telehandler and two trailers.

Small boilers I presume that will need G30 chip?

 

 

You know best how much large scale chipping of shortwood and slabwood in a yard costs, even 7 years ago my old boss reckoned the erjo chipper on a forwarder base terrain chipping was costing £16/tonne overall and given that was green and yours is 30% mc before you chip that's a big difference.

 

On a trip to St Regis pulpmill many years ago they reckoned on 50p/tonne just on sharpening costs and they did 5000 tonne/week.

 

I bought my TP960 prematurely 40 odd years ago thinking the biomass market was about to kick off, it didn't but we had it on the back of the MF1200 and because it was designed to produce a good chip, with the feed angled to the disc, it produced a very good chip without the need for a screen, quality easily exceeded G30 on roundwood.

 

Of the arb chippers in the yard the Forst tr6 with sharp blades and feed rate turned down produces the best chip for my boiler, it will feed chip from the Heizohack with a G50 screen but lots of problems with slivers and bridging mean it's unusual to run 3 hours before a loss of feed.

[Tom D]

Unless you have other work for it it's not worth getting a big chipper. Mine was 44k and then you need a decent tractor to power it. I could travel as far as you if there was a decent quality to chip. I can chip up to 16".

Chipping 250 ton with a hand fed machine would be torturous you really want crane fed.

[cornish wood burner]

You know best how much large scale chipping of shortwood and slabwood in a yard costs, even 7 years ago my old boss reckoned the erjo chipper on a forwarder base terrain chipping was costing £16/tonne overall and given that was green and yours is 30% mc before you chip that's a big difference.

 

On a trip to St Regis pulpmill many years ago they reckoned on 50p/tonne just on sharpening costs and they did 5000 tonne/week.

 

I bought my TP960 prematurely 40 odd years ago thinking the biomass market was about to kick off, it didn't but we had it on the back of the MF1200 and because it was designed to produce a good chip, with the feed angled to the disc, it produced a very good chip without the need for a screen, quality easily exceeded G30 on roundwood.

 

Of the arb chippers in the yard the Forst tr6 with sharp blades and feed rate turned down produces the best chip for my boiler, it will feed chip from the Heizohack with a G50 screen but lots of problems with slivers and bridging mean it's unusual to run 3 hours before a loss of feed.

Those prices are for roundwood. Slab is a lot more but its cheaper to start with so just about worth doing. Used to cost us about £20/ tonne when we started first if I remember correctly.

Bigger, more efficient chippers and competition have reduced costs. Very few chippers

around when we installed our first boiler. MF 1200 and chipper must have looked the business. One session we had an articulated case as a drive unit. Good while it lasted but didn't stand the work apparently

I agree sharpening is a very significant cost. Especially if there are some stones grabbed up

by the lorries as we have found to our cost.

 

Slivers and bridging seem to be the universal joys of biomass. Our chip quality is where it should be but still the occasional problem inspite of air blasts over the photocells.

[Mortimer Firewood]

250 tonne a year doesnt seem much for three boilers

 

Chickin farms round here using that a week every man and his dogs got a chipper