woodworm
Member
- Location
- Thetford Norfolk
Can anyone give me a rough indication of how much g30 or g50 chip a 500kw woodchip boiler consumes per day/week/month under full load operation please.
Thanks in advance
Thanks in advance
Woodchip consumption
- Thread starter woodworm
- Start date
- Location
- Burton on trent
I think about 150kg/h for 500 kw at full load, but that will probably be at 15 - 20% moisture. Wetter fuel = higher fuel consumption and heavier etc.
Someone else might have to confirm.
Someone else might have to confirm.
Rod Dumbreck
Member
my 90 kw uses between 45 and 209 per day, so between 250kg and a tonne for a 500, roughly
- Location
- Berkshire
Around 25m3 a week of 25%mc G30...
woodworm
Member
- Location
- Thetford Norfolk
Thank you all. Much appreciated
woodworm
Member
- Location
- Thetford Norfolk
Thank you
Doing it for the kids
Member
So how many kWh would yours churn out in in 24 hrs using 3t?
I’ve seen a boiler supplier claim 4200 kWh is achievable from logs @ 20% which I think is a bit rich!?
A1an
Member
3600kwh with a g30 w25, more would be achievable but at a cost to the boiler.
Doing it for the kids
Member
Is that per hour, at the meter?
- Location
- Burton on trent
Our 250kw boiler, in winter, will do 3500 - 4000 kWh in a 24 hour period. Some days 4500 kWh or more.
But I'd say it working hard at that.
But I'd say it working hard at that.
Doing it for the kids
Member
And using about 1.8t to achieve that?
- Location
- Burton on trent
The fuel I'm on is very dry.
So it'll be less than that,
I was using about 5 ton a week in winter when cold.
But this fuel is about 10% moisture approx
So it'll be less than that,
I was using about 5 ton a week in winter when cold.
But this fuel is about 10% moisture approx
Doing it for the kids
Member
Ok thanks.
I’m still trying to learn what’s actually achievable in real terms how much 1 ton of chip or logs gives at the meter after boiler inefficiencies etc.
4000+ kWh from a ton of 25% logs seems like a tall order to me even with an ultra efficient system
I’m still trying to learn what’s actually achievable in real terms how much 1 ton of chip or logs gives at the meter after boiler inefficiencies etc.
4000+ kWh from a ton of 25% logs seems like a tall order to me even with an ultra efficient system
- Location
- Burton on trent
2 boilers with the same kw, 1 chip other log. The chip is bound to do a lot more output in a 24 hour period.
Because it can run flat out most of the time.
The log has to rev up and then die down between fills. Etc
Because it can run flat out most of the time.
The log has to rev up and then die down between fills. Etc
Doing it for the kids
Member
Yeah I quite agree.
The chip boiler will run constantly at say 85% of rated output
The log boiler will start at 30% then spike at 400% then drop back down.
Total heat output should be the same though really over a given weight usage
The chip boiler will run constantly at say 85% of rated output
The log boiler will start at 30% then spike at 400% then drop back down.
Total heat output should be the same though really over a given weight usage
A1an
Member
Yes. Chips weighed in to hopper, boiler run on continuous load until fuel is finished, output then tallied from meter.
Rod Dumbreck
Member
Ours gives about 3.6kwh per kilogram, fairly consistently, but the weight used from the boilers computer which is really a volume converted to a weight,
Doing it for the kids
Member
That a good output! What would you say you get kWh /t then?
Doing it for the kids
Member
Ah the million dollar question, how many m3 / ton if in chip form!?