- Location
- Huntingdon
try GlenFarrow
Rape straw biomass boiler
- Thread starter jed
- Start date
- Location
- South Wales UK
What 10mm boiler plate cost now?
- Location
- South Wales UK
Thicker mild steel?
Doing it for the kids
Member
Or Dragon
About Us
dragonbiomass.co.uk
Don’t do either, less efficient less secondary tubes, less water in water jackets.
If you are going down that line it’s a Farm 2000 all the way. I would especially avoid dragon.
What was an odd thing to say?
'Definitely don't buy a dragon'. 'Less efficient'. But I don't own a farm 2000. How would anyone know which is better without owning and operating both simultaneously on the same fuel? I'm sure it's a good enough machine. But what is the efficiency comparison, what is the surface area difference, what difference does less water mean to the operational use? Or perhaps, in reality, they are very similar. Just two large boxes of steel what burn things...
I like the idea of these things, but don’t want one near my house. I’ve often wondered if you could have two ‘mobile’ thermal stores (molten salt?) - one at your house being used and the other away from the house to be heated. Or one heater and several houses with it’s own thermal store. Would need to last at least a week to be practical, so probably it would just be too big?
Because even one built to RHI specs can occasional behave like a Bomb is about to go off when they overheat! Good luck with the insurance claim.. Boilers are scary and need respect..
Ours is in the centre of the farm buildings connected to a 20,000l insulated buffer with 4x500l expansion tanks. The CHP also connects to it. From there it's over ground to the neighbouring chook shed and grain shed. And underground 220m to 2 houses and the workshop. The CHP runs the base load of 100kw, the straw burner tops up with 200 to 500kw as required. Used to be 4 bales a day. But chook shed is not as intense any more so chp does most of the work.
Doing it for the kids
Member
You are assuming i don’t know much about any of them though...
From memory a dragon has about 1/3rd of the tubes a F200 has.
Having seen fuel uses for all 3 vs outputs I maintain my stance.
Just an opinion of course. But I’ve been involved in biomass since 2012
renewablejohn
Member
- Location
- lancs
Thats why serious heat transfer systems use thermal oil instead of water.
renewablejohn
Member
- Location
- lancs
The information is out there if you want to do the research. Best place to start is the lab test results for each specific boiler. Historically they would all fail the emissions tests but I have not checked recently as to whether any are now approved for burning rape and if so at what moisture content.
renewablejohn
Member
- Location
- lancs
Easy to do with thermal oil and thermal stores available as standard "containers" as used in the Asphalt industry.
- Location
- South Wales UK
Pressure relief valves?
Most only 1-2 bar operational.
Which CHP unit did you install? I am thinking of fitting one to a 375kw system.. does it pay?
Yes PRV's fitted of course... my response was should you build your own system?? Possibly not if you need insurance
I love my Dragon D50.. parts and service support is crap but the boiler and control system is so simple..