Pellet store
Requirements for pellet store
35
boards must be mounted on the inner wall (30 mm
thick with tongue and groove) so the pellets cannot
push against the door, or so that it can be opened.
1
Seal between door and frame
2
Fire-resistant door
3
Z profile for boards
4
Boards
The door's lock must be sealed against dust on the
inner side. In spite of a widely circulated construction
document, the door handle on the inner side may not
be removed. It must be possible to open the door from
the inside in an emergency.
For screw conveyors, the store room door should be
positioned on the opposite side to the screw drive.
Because this area of the store empties first and, if
required, facilitates quick access to the store.
Electrical socket for pellet supplier's blower
For the pellet supplier's suction blower, a 230 V
electrical socket (C-13A fuse) in the vicinity of the filling
nozzle is useful.
6.2
Requirements for pellet store
Structural requirements
The pellet store's walls must withstand the load caused
by the weight of the pellets (bulk weight 650 kg/m³).
The plasterwork should also be durable enough that it
cannot rub or flake off and contaminate the pellets.
If the forces from the tilted floor construction are
directed into the floor and not the wall, then the
following wall thicknesses have proven effective in
practice given proper anchoring in the enclosing
masonry:
•
Concrete 100 mm thick.
•
Common brick 170 mm thick and plastered on
both sides.
•
Post-and-beam walls with 120 mm beams,
clearance 625 mm, with wooden panelling 15-
20 mm thick on both sides.
Dry storage for pellets
Pellets are very hygroscopic; they absorb moisture
from the environment. On contact with water or moist
walls, they swell up and break apart, becoming
unusable.
The pellet store must stay dry throughout the year. The
normal humidity encountered in normal residential
construction throughout the year is not harmful to the
pellets.
If there is a danger of moist walls from time to time,
such as in older buildings, we recommend installing
rear-ventilated wood facing on the walls or storing the
pellets in a fabric silo.
Regularly remove the dust from the pellet store
The pellet store must be regularly "emptied", so that
the dust can be removed from the pellet store.
Because the pellets "crumble" after a few years and
produce dust. In combination with increased air humid-
ity, this dust can lead to blockages of the suction
probes or prevent the pellets from sliding on the
slanted floor in the storeroom.
An increased amount of dust often occurs in oversized
storerooms that are only filled every 2 - 3 years,
because the high bulk weight of the pellets slowly
crushes the pellets below. Even in storerooms with
suction probes without inclined floor, "old" pellets often
remain between the suction probes and then crumble
slowly.
Therefore, the pellet store must be "emptied" at
the latest every three years, so that the dust can
be removed before refilling. Shovel "old" pellets either
to the discharge screw or the suction probe, so that
they are quickly used up.
