While an electric drive will score well with regards to emissions, in some situations a fuel-saving diesel drive is the better solution.
Kleemann uses three different drive concepts that offer the ideal solution depending on the task at hand, including E-DRIVE, D-DRIVE and H-DRIVE.
The decision on the most efficient solution depends on many factors. For example, whether there is a power supply option available on site, whether the machines are used in an urban environment or which local environmental regulations apply.
E-DRIVE offers two options: diesel fuel or all-electric. All-electric operation is environmentally friendly as there are no carbon dioxide emissions on site. A precondition for this is an ample and available power supply, which is often available in quarries or in larger recycling yards.
If a sufficient power supply is not available, a diesel-electric work option is available. For example, if the complete plant in the quarry is to be moved along the rock face, power is then supplied from a long cable, which is often too complex, or even no longer possible. In this case, power comes from the fuel-efficient diesel engine.
The crusher and all conveyor belts are then driven electrically by a generator. Depending on the local situation, the E-DRIVE concept offers high flexibility.
The diesel-direct D-DRIVE provides power directly from the engine to the crusher. In the last few years, it was possible to reduce consumption through the load-dependent fan drive of the new EVO2 Generation. The diesel-direct drive has the edge in lowering fuel consumption significantly. Thanks to a compact size and well thought-out transport options, the machines can be positioned in any place on the jobsite.
If continuous use of the all-electric drive is not possible, D-DRIVE is the better option and the more sustainable choice whenever flexibility is required. This is the case with demolition and processing work in urban areas, but also in road construction where the machines have to be moved along as construction progresses.
Screening plants from Kleemann use a diesel-hydraulic drive. Hydraulic pumps operate all machine parts such as the screen, belts and drive system. The power requirements of the screens are considerably lower than a crusher, which reduces fuel consumption during operation. The optional Start-Stop system can reduce consumption even more. With the Dual Power configuration, Kleemann screening plants have an option for an all-electric power supply. If a connection is available, the plant operates on site free of emissions. For example, in ecologically sensitive areas with strict stipulations.
Many factors play a role in the area of sustainability. Energy required for production, transport, storage, sales and disposal are all incorporated in the ecological footprint of the production process.
As far as emissions during operation are concerned, an all-electric plant is without doubt the best choice. In other cases, you must weigh whether supply via an external power source involving high equipment and material costs is more constructive at the end of the day than technology with lower fuel consumption.
Ecology can also mean placing your trust in low material usage and high durability.