Dman2
Member
- Location
- Durham, UK
As title
What the average kW per ton for Pellet boilers?
What the average kW per ton for Pellet boilers?
Pellet KW per Ton
- Thread starter Dman2
- Start date
renewablejohn
Member
- Location
- lancs
depends on what pellets your burning, wood, straw, torrefied wood, grass.
Dman2
Member
- Location
- Durham, UK
wood, from forever fuels
woodworm
Member
- Location
- Thetford Norfolk
If its chip at 30%mc, about 3490kWh/t
At 25% about 3790kWh/t
Pellets about 4800kWh/t
At 25% about 3790kWh/t
Pellets about 4800kWh/t
Dman2
Member
- Location
- Durham, UK
Not getting anywhere near that, but not running to capacity yet.
If nearer to capacity will it be more economical?
If nearer to capacity will it be more economical?
- Location
- Bedfordshire
4800 is the 'laboratory value'. There will be losses within the boiler and within the system before the heat meter. I bet I will only be 60-70% efficient at the end of the day. But job to measure.
- Location
- Boroughbridge, york
it will depend on usage, long periods of ticking over use fuel with little heat going to the meter. a good burn and heavy heat use will maximise efficiency
I use 4400 kw/t as a target. my boilers are twinned so during low demand periods I can turn one off, increasing efficiency
I use 4400 kw/t as a target. my boilers are twinned so during low demand periods I can turn one off, increasing efficiency
Dman2
Member
- Location
- Durham, UK
so until I can run near to capacity would I be better off switching the boiler off at times and then letting it run flat out to get temps back up?
Steven Rawding
New Member
- Location
- Ayrshire
Dman2, if you have a buffer set up correctly on a pellet boiler the short cycling or response to low demand should be met by the buffer.where this depletes your buffer by a set charge value then the boiler will kick in. Shutting down and starting up will have a negative effect on your efficiency. Your boiler should also modulate to approx 40% turndown rate minimum. I would say a real world value of 3800-4400 for pellet KW/T IS more realistic. Depending on your meter location you may also have system losses upstream of the meter
- Location
- SG9
Calculation on 3 190kw over 6 mnths. is 3950Kw/ton wood pellets 20% less than all quoted calculations that were given at getting "interested" stage.
Cowcalf
Member
- Location
- North of Scotland
what return per ton of good quality pellets are quoted for the most efficient machines on sale ?
- Location
- Boroughbridge, york
As said the set up and usage will make much more difference than boiler brand.
A friend turns his biomass and pipe loop off in summer and uses oil to heat domestic hot water in each property as it makes more sense. too much heat loss.
A friend turns his biomass and pipe loop off in summer and uses oil to heat domestic hot water in each property as it makes more sense. too much heat loss.
Cowcalf
Member
- Location
- North of Scotland
that is what I am asking, what is the maximum return per ton of quality pellets available allowing for the least losses
tayside renewables
Member
- Location
- Tayside
Pellet is 4400kW/h per Ton
Dman2
Member
- Location
- Durham, UK
After quite a bit of shouting oh and withholding payments
Turns out the problem was the heat meters where not installed properly
only getting @ 1000kw per ton of pellets
Fair buzzing round now
Just need to work out how much compensation now
Turns out the problem was the heat meters where not installed properly
only getting @ 1000kw per ton of pellets
Fair buzzing round now
Just need to work out how much compensation now
woodworm
Member
- Location
- Thetford Norfolk
Ow, that hurts.
Dman2
Member
- Location
- Durham, UK
What do you reckon to the installation of the heat probes?
The probe does not protrude into the flow of water, is this correct?
The probe does not protrude into the flow of water, is this correct?