ENERGY SAVING BELTS / REDUCED ROLLING RESISTANCE
ENERGY SAVING CONVEYOR BELTS
A conveyor belt is deformed when running over the idlers. This internal friction - or asymmetrical tension between idler and conveyor belt -consumes energy.
Special rubber compounds and belt designs - for instance an additional transverse reinforcement - reduce the indentation and let the belt run easier over the idlers.
Such belt types, on long distance conveyors, can save a lot of money.
They are marketed as EOB, XLL or LRR conveyor belts.
For the determination of the energy saving properties of a conveyor belt, a standardized test has been implemented at the ITA, University Hanover.
The test parameters - temperature, idler diameter, pressure - can be adjusted.
The animation on top of this site and the illustration on the right side show the principle.
The indentation rolling resistance is standardized in DIN 22123.
The illustration shows the motion resistances on a 1 km long horizontal conveyor as found by Hintz. The indentation rolling resistance of the conveyor belt, >60%, has by far the highest share.
Findings can be
POWER CONSUMPTION COMPARISON
10 % inclined conveyor
10 % declined conveyor
f = 0.020
f = 0.015