ian jones, twi ltd ([email protected]) energy …eh-network.org/events/eh2015/speakers/15.20 ian...
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Powerweave: the concept
FP7 European project
Development of Textiles for Electrical Energy Generation and Storage
Objectives: - Develop a knitted or woven fabric that will generate power from
sunlight or ambient lighting and store the energy within itself
- Develop photovoltaic fibres
- Develop energy storage fibres
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Powerweave: the concept
4 years - started in June 2012
Coordinated by TWI Ltd, UK
With 7 industrial partners and 6 research partners
From 7 countries
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Copyright © TWI Ltd 2015
Powerweave: the concept
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Powerweave: the concept
Exploitation
• Airship – Lindstrand Technologies
Small scale mobile airship with electric
propellers powered with
The Powerweave gas envelope
• Agricultural fabric – Bonar Technical Fabrics
Greenhouse shading for southern European climates providing power for ventilation, pumping water and lighting in remote location.
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POWERWEAVE: RESULTS ON FIBRES
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PV Fibre
• Dye sensitized solar cell
Invented by Prof. Michael Grätzel at EPFL Recently developed to 20% efficiency by EPFL Much less sensitive to angle of incidence of radiation than silicon cells Low cost processing equipment and materials compared to silicon
Challenges: - Transfer to fibre shape - Interconnect the fibres - Weave the PV fibres without damage
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Copyright © TWI Ltd 2015 8
PV fibre structure
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Energy Storage Fibre
• Choice between thin film Li-ion
cells and supercapacitors
• Li-ion cells have been demon-
strated with 5um thin films
by Brunel and Loughborough
Universities.
• Li-ion cells have better energy
density, up to 200Wh/kg vs 30 for
supercapacitors
• Supercapacitors have high power density, high lifetime and low
internal resistance
• Supercapacitors can be constructed from commonly available, low
cost materials, carbon and biomass based
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Copyright © TWI Ltd 2015
Storage fibre: thread supercapacitor
Schematic of four coating layers on a 50 microns stainless steel wire (1)
1) Fabrication and Characterisation of Flexible Coaxial Thin Thread
Supercapacitors
Fulian Qiu, David Harrison, John Fyson and Darren Southee
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Fibre coating results
• Coating of thin layers Homegeneity
Adhesion
Thickness
Roughness
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POWERWEAVE: RESULTS ON TEXTILE
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Results on textile
• 2 structures selected for weaving
semi-transparent fully opaque
The outer protective layer was successfully tested for weaving
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Results on textile
• First prototype of energy storage fibres
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POWERWEAVE: EXPLOITATION
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Copyright © TWI Ltd 2015
Key characterics of power textiles
Features
Glass panels
Flexible panels
High power efficiency √ -
Storage capacity X X
Low installation cost X √
Easy distribution X X
Adaptability X X
Production scalability - -
Life time √ √
Cost X X
Power textiles
X
√
√
√
√
√
-
X
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Copyright © TWI Ltd 2015
• Political UN Millenium Development Goals
"Universal energy access is a foundation for all the Millennium Development Goals". UN
Secretary General, Ban Ki Moon
Contribute to EU Renewable Energy Strategy – aims to get 20% of its energy from
renewable sources by 2020
• Economic Increased employment within manufacturing within the European textile industry
Reduced energy costs impacts on agricultural and food production costs.
• Societal and Environmental Reduction in carbon footprint and CO2 emissions
Off grid energy source increasing availability in Africa
• Technological New innovative development, contribution to new scientific knowledge and applications
Power textile impact – PEST Analysis
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• Photovoltaic technology is already used in the greenhouse-industry - the result is a fixed shading which can be negative for the cultivation of plants
• Power textiles allows rollable shading with semi-transparency, adaptable to climate and seasonal changes
• Market size at a modest 1% market penetration equals (NL, Mediterranean &China only): 4.5 million m²
Photovoltaics in greenhouses
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• Power textiles enable renewable, ‘free’ non polluting & non
flammable fuel
• Power textiles provide a more flexible alternative to 2nd and
3rd generation flexible solar panels for airships, sails, car
soft tops & inflatable structures
• Power textiles are the only technology which includes
power storage capability
Transport Applications
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• The wearable technology market was worth $2.7
billion in revenue in 2012 and is expected to
reach $8.3 billion in 2018.
• Power solutions are critical to making wearable
technology feel like a natural, consistent part of
our lives.
Wearable Technology Market
The headphones have an integrated flexible solar
cell that covers the full headband which capture
solar energy whilst out and about
Bags with photovoltaic panels are used to
power personal electronics and even
laptop computers.
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Textiles are everywhere – power will follow
• and beyond....
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Please visit us at www.powerweave.eu
Thank You