Hydraulic system optimisation

Energieffektivisering & Ventilation, Energi & Klima
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.
Experiences from studies in the field show that in many cases a potential of up to approx. 50% compared to conventional systems.
Project description

Development of a concept for optimization of hydraulic systems based on latest technology in components and controls compiled in a demand-driven approach. The demand-driven ap-proach to system optimization and methods including necessary registrations is used in an optimization tool for energy optimization of existing and design of new hydraulic systems that 

will developed in the project. In addition, a guide based on a specific methodological approach is developed illustrated with examples from the existing hydraulic system from the participating companies. The project is based in the part of the tool from the ongoing project no. 348-011 "Tool for system optimization" where routines for hydraulic optimization are developed. A new, independent tool for optimization of hydraulic systems is developed based on the latest knowledge about the operation of hydraulic pumps, hydraulic fluids, accumulators, controls etc.

In addition to the tool mentioned above a guide for the design of energy efficient hydraulic systems is 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 in order to ensure optimal energy efficient operation.

The main results of the project are:

  • Optimizing tool for hydraulic systems
  • Design guide for hydraulic systems
  • Draft for a "little blue" for hydraulics
  • Reporting incl. identification of potentials by sectors and technologies

The hydraulic industry, their customers and advisers is ensured new knowledge to achieve very significant energy efficiency improvements based on the actual needs of hydraulic operation.

Results

The purpose of this project was to develop a concept for demand-driven optimization of hydraulic systems, where the concrete needs are used in the individual cases. An important part of the industry's electricity consumption for electric motordriven machine systems is used for compressed air, cooling and hydraulics, of which just over 3% is used for hydraulic systems.

Experiences from studies in the field show that in many cases a potential of up to approx. 50% compared to conventional systems.

A concept has been developed for optimizing hydraulic systems based on the use of latest technology within components and regulation based on a demand driven approach. The concept is embedded in a computer based tool, which, based on records of the need in each case, allows the user and ideas for energy optimization. 

The developed tool and the project as a whole will be presented at the EEMODS'19 conference, which will be held in Tokyo in September 2019, if the submitted abstract is accepted. The tool can be downloaded at elforsk.dk/projektdatabase/optimering-hydrauliksystemer 

In addition, a design guide has been developed that supports the companies and their advisors when designing new hydraulic systems so that they are optimal in the individual case.

Finally, on the basis of the design guide, a draft of a "small blue" on hydraulics has been prepared that can be included in ELFORSK's series of small blue books on energy consuming installations, and the possibilities for efficiency improvement.

Key figures

Period:
2017 - 2019
Funding year:
2017
Own financial contribution:
1.11 mio. DKK
Grant:
1.38 mio. DKK
Funding rate:
55 %
Project budget:
2.48 mio. DKK

Category

Oprindelig title
Optimering af hydrauliksystemer
Programme
ELFORSK
Technology
Energy efficiency
Project type
Forskning
Case no.
ELFORSK 349-016

Participants

Teknologisk Institut (Main Responsible)
Partners and economy
Partner Subsidy Auto financing
NLMK Dansteel A/S
Bosch Rexroth A/S
SAINT-GOBAIN WEBER A/S
AURA Rådgivning A/S

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