Espejos multilaminares de aluminio para aplicaciones solares de Alanod – Alucoil By Stefan Brändle

1. Espejos multilaminares de aluminio p
p j para
aplicaciones solares de Alanod-Alucoil
Ing. Stefan Brändle
Dipl Ing. FH
Consulting Director Solar Applications
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2. Agenda
1. Alanod Solar equipment & possibilities
2. MIRO-Sun and ALMIRR
3. Why CSP?
5.
5 CSP technology overview
6. New CSP concepts
7. Conclusions
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3. Key figures of ALANOD Group
Turnover: € 200 Mio. (2010)
30.000 tons of coated metal / year
430 Employees
3 Locations (D, GB, USA)
> 40 local sales agents
Export to more than 100 countries
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4. Key markets and products of ALANOD Group
• Lighting industry
• Anodised qualities
q
• PVD coated MIRO® and MIRO-Silver® qualities
• Solar industry
• PVD coated highly selective absorber surfaces (Mirotherm/Mirosol
and Sunselect)
• Outdoor durable mirrors (MIRO-SUN® family)
• Computer Industry
p y
• PVD coated MIRO-SILVER® for reflectors
• Building industry
• Anodised, MIRO® and laquered qualities for decorative applications
• Automotive industry
• Anodised MIRO® and laquered qualities for decorative applications
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5. Locations
ALANOD
Headquarters
Ennepetal
Germany
ALANOD Ltd ALANOD Westlake Metals
Milton Keynes North Ridgeville OH
United Kingdom USA 5

6. MIRO-SUN® weatherproof 90
Outdoor durable reflector for CSP CST and CPV applications
CSP,
High production capacity due to continuous processes
ALANOD-Group: Production Capabilities
Production:
- 2 coil to coil anodizing lines,total capacity: 40Mio. m²
- 4 PVD coating lines, total capacity:
g , p y 20Mio. m²
- 1st Nanocomposite Laquering Line,capacity 3Mio. m²
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7. Production line: “ Elox 2”
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8. PVD-coating: ALBA II & ALBA III
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9. Production line: “Balack”
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10. Production process for MIRO-SUN ® Weatherproof 90
reflector material
Raw material stock Anodising PVD Coating
Nano Composite
Invoicing Coating
Dispatch Packing Slitting and
Cutting
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11. MIRO-SUN® weatherproof 90
for CSP, CST and CPV applications
CSP
Substrate : Aluminium Total Solar Reflectance: 90%
Thickness: 0.3 – 0.8mm Specular Reflectance: 87%
Max width: 1250mm Total Light Reflectance: 92%
Outdoor durable 11

12. Espejos Multilaminares de Aluminio
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13. Durability Testing
Abrasión
Niebla Salina
Adherencia de la capa protectora
Intemperie Rayos ultravioleta
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14. Field Monitoring
Solar Nevada 1 USA (Desert) no corrosion or degradation after 4 years
Test Frame
Test Mirror 1 after cleaning
New MIRO-Sun
sheet
Test Mi
T t Mirror 1
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15. Field Monitoring
SEGS II Daggett California USA (Dry) no corrosion or degradation after 5 years
New MIRO-Sun sheet
Test Mirror 2
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16. Easy-to-clean
Easy to clean
Eas
properties of
MIRO-sun

17. Surface conditions
Cleaning properties are determined by wettability
Hydrophilic Hydrophobic Super-hydrophobic
contact angle << 90° contact angle ~90° contact angle >> 90°
“self cleaning” IF rinsing speed
self-cleaning
is high
“easy-to-clean” “no wetting”
Typical application on glass
together with photo-
photo
catalytic effect (TiO2
particles)
special applications
inspired b nature
i i d by t

18. Surface conditions
Hydrophilic “self-cleaning” surfaces
• Self-cleaning mechanism
• Dirt particles are washed away by water wetting the surface
• Requires high rinsing speed to work well
– Typically installation angle of surface >70° (gravity drives water!)
– Large amount of water
• Well suited for environments with amply rain for badly
accessible installation locations
• Photo-catalytic effect
• TiO2 particles in surface dissociate water molecules into super
oxide and hydroxyl radicals, which decompose organic
residues on the surface e g bacteria lichen fungal attack
surface, e.g. bacteria, lichen,
• No effect to inorganic dirt, e.g. sand, dust, lime-scale

19. MIRO-Sun Easy to clean surface
Hydrophobic “easy-to-clean” surfaces
• Decreased sticking of dirt on surface
dirt is easily removed when rinsed with water
• Rinsing cycle requires less water
water droplet on l f
t d l t leaf
• Easy drying due to decreased wettability of water
without wiping trace
• Can easily be dried by air blower
without water residues on surface
• Easy de-icing water droplet on MIRO-sun
• Metal surface no static loads if grounded

20. Why do we need CSP ?
The way of thinking of our modern civilization is based on a
fatal mistake:
We do not see the fundamental difference in
between energy sources and energy stores!
Our global energy consumption is based mainly on
ENERGY STORES like fossil fuels and uranium with no
sustainability and fatal consequences for future generations
(climate change nulear waste)
change,
Our choices for the use of ENERGY SOURCES:
(Electricity production per square kilometer of land use per year) Source: DLR
Bio Mass Power Plants 1-2 GWh/km²/a (Central Europe)
Geo Thermal Power Plants 1-2 GWh/km²/a (Turkey, Italy, France)
Wind Parks 5-50 GWh/km²/a (Coast and Offshore)
Hydro Power 5-50 GWh/km²/a (Norway, Alps)
Photovoltaics
Ph t lt i 10-100 GWh/km²/a (S th
10 100 GWh/k ²/ (Southern Europe)
E )
CSP 100-250 GWh/km²/a (North Africa)
EFFICIENCY. SOLAR. SURFACES. 20

21. CSP technologies, an overview:
Towers PTC Parabolic Dish Linear Fresnel
Parabolic Trough Collector
Lets not forget concentrating photovoltaics!
LCPV MCPV HCPV
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22. Recent commercially deployed plants
y p y p
Solnova 1 / 3 / 4, PS10 / 20 Spain Andasol 1 / 2
Extresol 1 Spain La Risca, Alvarado Spain
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23. Recent commercially deployed plants
y p y p
Puerto Errado 1 Spain by Novatec Biosol Kimberlina USA by Areva
Kuryamat Egypt by Orascom Archimede Priolo Italy by ENEA
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24. Present overview of CSP projects in pipeline
EFFICIENCY. SOLAR. SURFACES. 24

25. New Concepts in Pilot Phase
p
Linear Fresnel by CNIM France SL 4600 by Solar-Lite in Thailand
Beam Down Tower by Tokyo Tech in Abu Dhabi Big Dish Australia by ANU
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26. New Concepts in Pilot Phase
p
Maricopa Solar by SES USA Villarobledo Spain by Infinia
SunTrof Mulk Dubai Skytrough by Skyfuel USA
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27. Mass / Weight / Logistics
Constructing Abengoas 280MW Solana
g g
project in Arizona will require over 80‘000
tons of steel – enough to build a second
Golden Gate Bridge
Glass: ~ 2200sqm / sea container 295 containers
Metal: 15´000sqm / sea container 42 containers 27

28. Installed cost of CSP has to go down,
but how? New d i
b th ?N designs? S l ?
? Scale?
Metal Reflectors fit ideally into large scale production
processes: some examples
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29. New concepts for CSP
Heliotrough
Is bigger better? And is glass still able
to do the job if sizes are increased?
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30. New concepts for CSP
-Alcoa and National Renewable Energy Lab
Testing New Innovative Concentrating Solar
Power System
- Advanced Alcoa Wing Box Design and
Technology to Lower Cost to Generate Energy
from the Sun
f th S
- 30%
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31. New concepts for CSP
The World’s first MicroCSP Solar Thermal
Plant “Holaniku at Keahole Point” on
Hawaii.
2 Megawatt thermal energy project which
spans across 3.8 acres in the hot Kona
desert utilizes 1,000 S
d t tili 1 000 Sopogy proprietary
i t
MicroCSP solar panels.
With an unique thermal energy storage
buffer that allows energy to be p
gy produced
during cloudy periods and to shift energy
produced from the day to evening
periods. 31

32. New concepts for CSP
Linear Fresnel Design
with aluminium
composite primary mirrors
-More accurate form factor
-Less weight
-Simpler torque tube and fixation
-Mirror is part of the structural design
f
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33. New concepts for CSP
High temperature secondary mirrors for linear fresnel receivers

34. New concepts for CSP
Radically new engineering approach for
Dishs and Heliostats
-Drastically lower material usage
-Increased form factor lead to higher overall efficiency
-Short installation time allows mass field deployment
-Drastically decreased cost /watt compared to existing
g
designs
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35. New concepts for CST Concentrated Solar Thermal
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36. The future of concentrated solar energy,
new designs for self efficiency and
self-efficiency
reduction of global costs
Conclusions
•L
Large production capacity will b crucial f f th CSP
d ti it ill be i l for further
development
• Existing manufacturing facilities and processes will play an
important role in this development
• First examples show that metal mirrors are already choosen if
p y
it comes to large scale manufacturing.
•Radically new designs starting from scratch are the
most promising way to get installed cost down
• PV is in CSP´s neck….
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37. Thank you for your attention!
Additional information:
www.alanod-solar.com
www.alanod-solar.us
www alanod solar us
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