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SAM Linear Fresnel solar boiler model: Novatec solar boiler sample file Webinar SAM 11.05.2012
20.06.2012
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www.novatecsolar.com 2
About the speaker
Applications engineer - Product and market development department Working since 2010 at Novatec Solar GmbH Academic background:
– Master thesis at the Deutschen Zentrums für Luft- und Raumfahrt (DLR) in the solar research department (German Aerospace Center, Stuttgart, Germany)
– MSc in Sustainable Energy Engineering from the Kungliga Tekniska Högskolan (Royal Institute of Technology, Stockholm, Sweden)
– Masters degree in engineering in Energy System Engineering from the Ecole des Mines de Nantes (Nantes, France)
Camille Bachelier [email protected] (+49) 721 255 173 41 www.novatecsolar.com
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Presentation outline
Novatec Solar profile Novatec solar boiler technology Novatec Solar linear Fresnel solar boiler sample file Comparison SAM/Novatec models
www.novatecsolar.com 3
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NOVATEC SOLAR PROFILE
www.novatecsolar.com 4
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Novatec Solar
www.novatecsolar.com 5
Novatec Solar profile: – Leading supplier of turn key linear Fresnel solar boilers – Founded in 2006 in Karlsruhe, Germany – Since 2011, partially owned by the ABB group
Collaboration with NREL: review of linear Fresnel solar boiler model in SAM
Novatec Solar PE-2, Solarthermal Power Station, Southern Spain
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Novatec Solar references
www.novatecsolar.com 6
Project Name
Power output
Aperture area
Type of Project Status Picture
Puerto Errado 1 (PE 1)
1.4 MWel 18,500 m2 Demonstration plant
In commercial operation since March
2009
Puerto Errado 2 (PE 2)
30 MWel 302,000 m2 Power
generation plant
Final commissioning
Liddell Power Plant
9 MWth 18,500 m2
Solar augmentation of a coal fired power plant
Final commissioning
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NOVATEC SOLAR TECHNOLOGY
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Linear Fresnel basic principle
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Collects sun radiation on a large mirror area and concentrates it on a tiny area
Similar to parabolic trough, but the primary reflector design is different
Fresnel design: − Lower optical efficiency − Significant cost reductions − Cost reductions
compensate efficiency losses
Receiver Parabolic trough primary reflector
Fresnel primary reflector
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Novatec solar boilers
www.novatecsolar.com 9
Low cost turnkey solar boilers based on Fresnel technology
Direct steam generation: water is the heat transfer fluid
Evaporating solar boiler – Saturated steam – Up to 300°C – 90 bar
Superheating solar boiler
– Superheated steam – Up to 500°C – 100 bar
Puerto Errado 1, Turnkey Solar Boiler, Southern Spain
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Key differences to other CSP technologies
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Direct steam generation no costly and hazardous heat transfer fluid, no intermediary heat exchanger
Structure close to the ground lighter structure (lower required mechanical strength), light foundations, lower land requirement
Fixed receiver simple receiver connection even at high pressure, simple thermal expansion compensation system
Mostly made of standard components cost reduction, streamlined production process, potentially high local content in the construction
Patented automated cleaning system almost waterless operations, reduced O&M costs
Performance guarantees
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NOVATEC SOLAR LINEAR FRESNEL SOLAR BOILER SAMPLE FILE IN SAM
www.novatecsolar.com 11
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Linear Fresnel solar boiler in SAM
www.novatecsolar.com 12
Sample file integrated in SAM: – On welcome screen: click on
“Open a sample file” – Select “Novatec solar boiler” – Follow instructions
Pre-configured model of state of the art, commercially available linear Fresnel solar boiler
Based on Novatec Solar Key Performance Indicators, used for performance guaranteeing
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Novatec Solar performance guarantee model
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Pth = A x (DNI x fcl x ηopt - qloss)
Pth = thermal power output [Wth] A = aperture area [m²] DNI = direct solar irradiance [W/m²] fcl = mirror cleanliness factor ηopt = optical efficiency qloss = specific heat losses [W/m²]
qloss = u0 ∆T + u1∆T2 + u2∆T3 + u3∆T4
In orange: guaranteed values
ηopt = ηo x K⊥ (Θ⊥) x KII (Θi)
θ ⊥
θ i
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Typical solar power plant based on Novatec solar boiler
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COMPARISON SAM/NOVATEC MODEL
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Main results: hourly results comparison
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Daggett (CA), June 21st (SAM weather data)
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Main results: Multiple location annual results comparison
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Conclusions
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Good match between SAM and Novatec solar results for annual thermal energy yield calculations
Still some deviations due to the modelling detail level and assumptions
SAM provides a good first estimate model for linear Fresnel solar boilers
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THANK YOU FOR YOUR ATTENTION
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