Drive, pipe screw conveyor, standard
Part no. 7387 814
Standard version for pipe screw conveyor with pulling drive and dis-
charge into a drop section. The system is driven via spur geared motor
and chain in dust-proof chain guard. Also possible as pushing version
for MR 150 and exclusively with pellets.
Standard delivery:
■ Drive unit with spur geared motor 3 x 400 V and chain drive
■ Inlet with light barrier for monitoring the fill level (overfill protection)
■ Discharge with inspection cover, safety limit switch and downpipe/
adaptor for the following conveyor device (not required in pushing
version)
Trade name Drive, pipe screw conveyor, standard
Type MR-12
Part no.: 7387 814
Diameter of the screw conveyor max. mm 150 150 190
Torque at screw conveyor Nm ~800 ~800 ~800
Function Pulling Pushing Pulling
Length of the screw conveyor max. m 10 8 10
Boiler output max. when using:
Pellets kW 200 1200 3200
Woodchips from forests kW 300 - 1250
Drive, pipe screw conveyor, high-power
Part no. 7388 002
Special, powerful version of the pipe screw conveyor for more difficult
applications (high pump rate and/or pushing function). The system is
driven via a more powerful version of a spur geared motor, bearing
and chain in dust-proof chain guard.
Standard delivery:
■ Drive unit in powerful version and additional axial bearing with push-
ing function with spur geared motor 3 x 400 V and chain drive
■ Inlet with light barrier for monitoring the fill level
■ Discharge with inspection cover, safety limit switch and downpipe/
adaptor for the following conveyor device (not required in pushing
version)
Trade name Drive, pipe screw conveyor, high-power
Type MR-13
Part no.: 7388 002
Diameter of the screw conveyor max. mm 190 250 250
Torque at screw conveyor Nm ~1100 ~1100 ~1100
Function Pulling Pushing Pulling
Length of the screw conveyor max. m 10 8 10
Boiler output max. when using:
Woodchips from forests kW 1500 2500 2500
6.17 Fuel storage in on-site pellet store (sizing)
Sizing the pellet storage room
The storage room should be more rectangular than square and should
be of a size which allows an annual quantity of fuel to be stored. The
size of the storage room depends on the heating load of the building.
The floor area should not be less than 2 x 3 m.
The required size of the storage room for the annual fuel volume in
m
3
(incl. empty space) is calculated by multiplying the building heating
load (in kW) by a factor of 0.9 (m
3
/kW).
Example:
Heating load of the building 150 kW
150 kW x 0.9 (m
3
/kW) = 135 m
3
Available space (storage room minus unusable area due to sloping
floors) = 135 m
3
x 2/3 +135 m
3
= 225 m
3
Amount of pellets
= 225 m
3
x 650 kg/m
3
= 146,250 kg/m
3
≈
147 t
Storage room size
= 135 m
3
/ 2.3 m (room height)
= 59 m
2
floor area
In order to store the annual fuel quantity, a room size of 7 m x 8.5 m
is sufficient
Stored amount of energy = 58,500 kg x 5 kWh/kg = 292,500 kWh
Design information
(cont.)
74
PYROT
6
5822 516 GB
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