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Riblet4Wind

Riblet-Surfaces for Improvement of Efficiency of Wind Turbines

Total Cost €

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EC-Contrib. €

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Project "Riblet4Wind" data sheet

The following table provides information about the project.

Coordinator
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. 

Organization address
address: HANSASTRASSE 27C
city: MUNCHEN
postcode: 80686
website: www.fraunhofer.de

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Germany [DE]
 Project website http://www.riblet4wind.eu
 Total cost 4˙031˙852 €
 EC max contribution 3˙307˙171 € (82%)
 Programme 1. H2020-EU.3.3.2.4. (Develop geothermal, hydro, marine and other renewable energy options)
2. H2020-EU.3.3.2.2. (Develop efficient, reliable and cost-competitive solar energy systems)
3. H2020-EU.3.3.2.1. (Develop the full potential of wind energy)
 Code Call H2020-LCE-2014-2
 Funding Scheme IA
 Starting year 2015
 Duration (year-month-day) from 2015-06-01   to  2019-02-28

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. DE (MUNCHEN) coordinator 1˙118˙250.00
2    ELTRONIC A/S DK (HEDENSTED) participant 522˙812.00
3    UNIVERSITAT DE BARCELONA ES (BARCELONA) participant 498˙000.00
4    MUEHLHAN A/S DK (MIDDELFART) participant 453˙372.00
5    BIONIC SURFACE TECHNOLOGIES GMBH AT (GRAZ) participant 359˙136.00
6    MANKIEWICZ GEBR. & CO. GMBH & CO KG DE (HAMBURG) participant 216˙475.00
7    E.ON CLIMATE & RENEWABLES UK LIMITED UK (COVENTRY WEST MIDLANDS) participant 139˙125.00

Map

 Project objective

The main objective of Riblet4Wind is the transfer of a technology that has already demonstrated its capacity for increasing the energy efficiency in the aeronautics sector, to the wind energy industry.

Application of functional coatings with riblet structure will improve the drag to lift ratio of rotor blades significantly. Wind tunnel experiments have proven the capability of this riblet-coating technology to increase the efficiency of wind turbines by up to 6%.

This direct effect will allow gaining the same amount of electrical energy with smaller rotor blades. Indirect effects will increase the benefit to approximately more than 10%:

• The improved drag to lift ratio will allow operation at lower wind speeds. The earlier cut-in of the WTG will improve the facility to balance in the electrical grid system.

• The riblet structure improves the stall and turbulence behaviour of the rotor blades thus allowing also operation at higher wind speeds and/or operation in less optimum wind conditions, e.g. changing wind directions or gusts.

• The improved drag to lift ratio will reveal design options due to changes of the design loads.

• The riblet structure will also result in a substantial reduction of noise emissions.

It is expected that the interaction of direct and indirect effects will contribute significantly to the targets of the European Wind Energy Technology Platform (TPWind) as declared in the new Strategic Research Agenda / Market Deployment Strategy (SRA / MDS) : a reduction of levelised costs of energy (LCoE) by 20% (onshore) respectively 50% (offshore) until 2028 (LCoE reference 2008).

Beyond the focus of the topic H2020-LCE3-2014 the riblet-paint technology can also be applied on existing rotor blades, thus supporting retrofitting of existing wind turbines and maximising the benefit.

In total Riblet4Wind aims at demonstrating the successful transfer of the riblet-coating technology and the semi-quantitative assessment of the direct and indirect effects.

 Deliverables

List of deliverables.
Final Dissemination and Exploitation plan and achieved D&E results Documents, reports 2020-01-20 14:57:11
Expected impact on performance Documents, reports 2020-01-20 14:57:11
Test of application technique on mock-up Documents, reports 2020-01-20 14:57:11
Performance investigation completed Documents, reports 2020-01-20 14:57:11
Coated rotor blades and basic process design for the coating process Demonstrators, pilots, prototypes 2020-01-20 14:57:11
Application mould material defined Documents, reports 2020-01-20 14:57:11
Coated rotor blades mounted Demonstrators, pilots, prototypes 2020-01-20 14:57:11
Selection of technology in a benchmark by performance evaluation Documents, reports 2020-01-20 14:57:11
Disposable slot die Demonstrators, pilots, prototypes 2020-01-20 14:57:11
Lacquer material for application trials and rotorblade coating available Demonstrators, pilots, prototypes 2020-01-20 14:57:11
Preliminary Dissemination and Exploitation plan Documents, reports 2020-01-20 14:57:11
Final report on requirements Documents, reports 2020-01-20 14:57:11

Take a look to the deliverables list in detail:  detailed list of Riblet4Wind deliverables.

 Publications

year authors and title journal last update
List of publications.
2016 Heinrich Kordy
Process abilities of the riblet-coating process with dual-cure lacquers
published pages: , ISSN: 1755-5817, DOI: 10.1016/j.cirpj.2015.08.003
CIRP Journal of Manufacturing Science and Technology 2020-01-20

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The information about "RIBLET4WIND" are provided by the European Opendata Portal: CORDIS opendata.

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