Option 1
Screw
A screw carries the fuel from the store, through a tight rotary valve, and the stoker screw feeds it into the burner. The rotary valve is fully sealed and safe against burn-back.
Silo for pellets · Galvanised steel
Pellet silo
A pellet silo in galvanised steel, filled directly from the bulk tanker. The pellets are blown up to the cyclone on the roof and discharged at the bottom, on to the boiler.
Volume, in galvanised steel11–185m³
01How the silo works
The pellets' paththrough the silo.
From the bulk tanker up through the pipe, down through the silo and out at the bottom. A pellet silo in five steps.
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2
3
4
5
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01Filling pipe
The bulk tanker fills it.
The pellets are blown from the bulk tanker through the filling pipe, all the way up to the cyclone on the roof.
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02Cyclone
Up on the roof, the air is separated.
The cyclone on the roof separates the pellets from the air that carried them there. The pellets drop into the silo.
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03Galvanised steel
11–185 m³ on its own legs.
The silo is built in galvanised steel and stands on its own legs, with bracing between them.
- Volume
- 11–185 m³
- Material
- Galvanised steel
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04Conical bottom
The bottom narrows.
The conical bottom lets the pellets flow down towards the outlet.
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05Outlet
Out at the bottom, on to the boiler.
The outlet is at the bottom of the silo. From there, the pellets go on to the boiler – by screw or by vacuum.
How the pellets reach the boiler
02Feed system
From the siloto the boiler.
From the outlet at the bottom, the pellets reach the boiler in one of two ways – by screw or by vacuum.
Option 2
Vacuum
Pellets can also be drawn by a vacuum system from a store some distance away. For PelleTech Multiauto, the store can be up to 20 m from the boiler.
The boilers that burn pellets from the silo
The silo is one of the fuel store solutions for Multiauto, IDRO and AERO.
03Sizing
How many pelletsdo you need?
The rule of thumb: wood chips in cubic metres per year come to roughly twice the boiler output in kilowatts. For pellets, divide the chip volume by 3.9.
- 26 m³50 kW boiler
- 51 m³100 kW boiler
- 103 m³200 kW boiler
- 256 m³500 kW boiler – more than the largest silo holds
A worked example based on the rule of thumb – actual consumption depends on the quality and moisture content of the fuel and on how the plant is used. We calculate the figures for your plant in the needs analysis. More fuel stores and the wood chip volumes are on the overview of all fuel stores.
04The complete plant
More fuel stores,one contact.
The store is built to suit your conditions and requirements – the site, the fuel and how you want to fill it. Besides PelleTech's solutions, we also manufacture a range of different stores in-house.
- 11–500 m³All fuel storesFive ways to store the fuel, for wood chips and pellets.
- 180 m³Spring agitatorThe spring arms sweep the chips in to the screw.
- 500 m³Scraper-floor storeHydraulic scrapers push the chips forward.
- As requiredCarportThe wood chips stay dry under cover.
- Own pelletsManure into pelletsThe silo is one of the stores for the pellets you make yourself.
- Mobile shredderThe ShredderAll fuel store solutions can also be complemented with our mobile shredder.
The brochure
All our fuel stores in one brochure.
PDF · 12 pages · 2.0 MB
Free heat-load calculation
Let's calculate your heating.
Tell us about your pellet consumption and where the silo will stand, and we will calculate the silo and the rest of the plant – the heat-load calculation is free of charge.
info@biothermheat.comVästerås · Luleå