When procuring a new cleaning system, investment costs often tip the scales, for example when selecting process technology or equipment. However, costs downstream must also be considered.
Resource efficiency as a part of the life cycle cost consideration
Energy expenditure for evaporating open baths
Per m² bath surface, dependent on temperature
At 80°C, the average heat output is approx. 8 kW. Of this, only some 60% is caused by pure evaporation losses. The remainder is therefore affected by the energy needs of the parts to be processed and general heat losses.
Water loss from open baths
Per m² bath surface, dependent on temperature
The water lost from open bath systems is also affected significantly by temperature and the necessary extraction capacity.
Plant systems in an energy efficiency comparison
The type of system selected fundamentally determines the overheads in energy efficiency terms.
Comparison of energy consumption
Without considering the effects caused by the new approach to a cleaning bath, a water-based single chamber system has been revealed as the more efficient system with the greatest opportunities for increased efficiency. As a double chamber system, this effect is increased by the distribution of the basic load on a higher throughput.
| Single chamber system Hydrocarbon water-based |
Single chamber system water-based |
Double chamber system water-based |
Serial immersion system water-based |
|
|---|---|---|---|---|
| Power drain Full load operation (kW) |
33.5 | 27.5 | 45.0 | 91.0 |
| Max. throughput (Loads/h) | 5(Cycle time 12 min) | 5(Cycle time 12 min) | 9(Cycle time 6.5 min) | 13.3(Cycle time 4.5 min) |
| Energy requirement (kWh/load) | 6.7 | 5.5 | 5.0 | 6.8 |
An example of energy saving
