There are considerable opportunities for increased efficiency in hydraulic systems that can be realized through demand-oriented control methods and use of energy-efficient components. Experiences from studies shows that in many cases, a potential of up to about 50% can be realized compared to conventional systems (isbn: 978-87-91326-11-0).
The project has developed a concept for optimization of hydraulic systems based on latest technology in components and controls compiled in a demand-driven approach. The demand-driven approach to system optimization and methods including necessary registrations for energy optimization of existing and design of new hydraulic systems was developed in the project (Hydraulic system optimization, research project report (349-016)).
Furthermore, a new, independent tool for optimization of hydraulic systems is developed based on the latest knowledge about the operation of hydraulic. The tool is built on knowledge from the well-known Motor Systems Tool (Motor Systems Tool:
http://motorsystems.org) as algorithms for motors, frequency converters are used in the hydraulic systems tool. The hydraulic systems tool compares eight different system setups based on specific data for system requirements as hydraulic flow and pressure from the hydraulic-operated equipment.
In addition to the tool mentioned above, a guide for the design of energy-efficient hydraulic systems was developed since experiences show that the interaction between the capacity of the hydraulic pump, the accumulation tank, and regulation of hydraulic pressure relative to the actual needs is essential to ensure optimal energy-efficient operation.
The main results of the project are:
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Optimizing tool for hydraulic systems
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Design guide for hydraulic systems
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Draft handbook for hydraulics
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Reporting incl. identification of potentials by sectors and technologies
The project was funded by public means from the Danish ELFORSK Program (ELFORSK program webpage:
www.elforsk.dk) and by the participating companies lead by Danish Technological Institute.
