Concentrating solar process heat for dairy plants in Switzerland

Transcription

SOLAR INDUSTRIAL PROCESS HEAT
Concentrating solar process heat for dairy plants in Switzerland:
Update and return on experience after 3 years of operation
Stefan Minder - NEP Solar AG
SHIP 2015, Montpellier France
September 15th, 2015
2012 & 2013
Albisriederstrasse 184b | 8047 Zürich | Switzerland
Phone +41 44 404 8015| Fax +41 43 411 9008| www.nep-solar.com
NEP Solar AG
 Developer and supplier of parabolic trough collectors since 2008
 Start-up with roots in Australia, companies in Switzerland and Australia
 Turn key delivery of solar collector fields, project development, engineering
© ewz
SHIP 2015 Montpellier
15.9.2015
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NEP Solar Experience since 2008
Ewz / LESA
Prototype (2008)
Desalination R&D (2009)
Solar Cooling (2010)
Emmi / TdM
Waste treatment (2011)
Tri-Generation (2011)
Process heat (2012)
Process heat (2011)
Cremo
Cremo
Process heat (2013)
And:
1x Process heat for CCS Trial in AUS
1x Solar cooling& heating for Hotel in AUS
CSP-ORC (2013)
... + number of small Demo-Installations.
Tri-Generation (2014)
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LESA Bever, Switzerland, 1700 m
Milk Processing
Collector Aperture 115 m2
Supply Temperature 190°C
Thermal Oil
Indirect Steam Generation
Commissioned in 2011
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©
ewz
Page
4
Saignelégier,
Switzerland
Tête
de Moine
(Emmi) Saignelégier, Switzerland
627m2 / 125°C / Water-Antifreeze / Milk processing
Cheese Manufacturing
Collector Aperture 627m2
Supply Temperature 120°C
Water-Antifreeze
15 m3 Hot water storage
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CREMO Fribourg,
Saignelégier,
Switzerland Switzerland
Milk Processing
627m2
/ 125°C / Water-Antifreeze / Milk processing
Collector Aperture 587 m2
Supply Temperature up to 165°C
Water with waste heat freeze protection
E-W collector axis
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Saignelégier: Acquisition and customer motivation
 Emmi Group: 3000 Employees, largest dairy group in
Switzerland, taking corporate responsibility seriously
 Agreement with Swiss Private Sector Energy Agency (EnAW)
and binding targets for CO2-Reduction
 Excellent network of EnAW consultants -> efficient
dissemination of technological innovations
 Subsidies by Swiss state and regional government (Kanton)
 Building extension project with flat roof allows for efficient
structural and thermal integration
 Up to 12 year payback acceptable due to nature of project
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Transparent yield simulation
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Transparent yield simulation
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Engineering Support
Saignelégier Solar Heat Integration
Buffer Storage
Boiler
Distribution
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Customer Satisfaction ≠ Collector Performance
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Investment cost Saignelégier
% of Total
Roof Substructure
11%
Roof Waterproofing
5%
Civil engineering
2%
Solar collectors installed, incl. instrum. & control
53%
Client side electrical installations & engineering
2%
Hydraulic installations & engineering
21%
Coordination and project management
3%
Other / unforeseen
4%
Total planned
Total real
104%
Subsidies (approx.)
40% of real
Investment by client
60% of real
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EvaSP (Evaluation of Solar Process Heat Systems in Switzerland)
Evaluation of thermal and economical performance of six solar thermal
plants for industrial process heat in Switzerland
 Main Goals
 Overview of the performances of the SHIP plants in operation
 Recommendations for future projects based on the results of the study
 The evaluation includes:

Energetical analysis

Prblems encountered and proposed solutions/improvements

Economical analysis

Comparison of the plants, collector technologies and integration
Mercedes H. Rittmann-Frank SCCER EIP WP 2
Folie 18
SHIP Plants evaluated in the EvaSP Project
Folie 19
SHIP Plants evaluated in the EvaSP Project
Three collector technologies, different temperatures and processes
Site
Client
Process
Solar supply
temperature
Collector
technology
1
Bever
Dairy
170-180°C
Parabolic Trough
2
Saignelégier
Dairy
120°C
Parabolic Trough
3
Fribourg
Dairy
120 and 160°C
Parabolic Trough
4
Genf
Hospital
5
Gränichen
Paint
90-100°C
Evacuated Tube
6
Yverdon
Bitumen
160°C
Evac. Flat Plate
Evacuated Tube
Folie 20
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Operation experience
 Reliability improving from first to third project. Very good
reliability in Saignelégier, excellent in Fribourg (Cremo)
 Very robust collector and tracking. No adjustments, no
replacements, except…
 Two headaches: Flexible hoses and snow
 Thermal performance of collector fields meets expectations
 Savings for client at Saignelégier below expectation:
 10-15% lost due to excess heat in Summer
 Currently about 40% lower savings due to low oil price
 O&M cost low at Saignelégier and Cremo, but too high at small
LESA Bever plant
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Conclusions
 The technology is fit for applications in industry
 Durable, reliable, low O&M
 The collectors perform very well and at constant level
 Plants should be > 500 m2 collector aperture (250 kWth)
 In the current environment and in most places relatively high
subsidies are needed to make the choice for SHIP attractive
 It is still early times - massive cost reductions and technology
improvements are still ahead.
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www.nep-solar.com
NEP Solar AG
Albisriederstrasse 184b
8047 Zürich, Switzerland
[email protected]
+41
404
8015
SHIP44
2015
Montpellier
15.9.2015
Page 27

Concentrating solar process heat for dairy plants in Switzerland

Transcription

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