Concentrating solar process heat for dairy plants in Switzerland: Update and return on experience after 3 years of operation

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1 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 15 th, 2015 Albisriederstrasse 184b 8047 Zürich Switzerland Phone Fax & 2013

2 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 Page 2

3 NEP Solar Experience since 2008 Ewz / LESA Prototype (2008) Desalination R&D (2009) Solar Cooling (2010) Process heat (2011) Emmi / TdM Cremo Waste treatment (2011) Tri-Generation (2011) Process heat (2012) Process heat (2013) And: 1x Process heat for CCS Trial in AUS 1x Solar cooling& heating for Hotel in AUS CSP-ORC (2013) Tri-Generation (2014)... + number of small Demo-Installations. SHIP 2015 Montpellier Page 3

4 LESA Bever, Switzerland, 1700 m Milk Processing Collector Aperture 115 m2 Supply Temperature 190 C Thermal Oil Indirect Steam Generation Commissioned in 2011 SHIP 2015 Montpellier Page ewz 4

5 Tête Saignelégier, de Moine Switzerland (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 Commissioned in 2012 SHIP 2015 Montpellier Page 5

6 CREMO Fribourg, Switzerland Saignelégier, Switzerland 627m2 Milk Processing / 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 Commissioned in 2013 SHIP 2015 Montpellier Page 6

7 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 CO 2 -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 SHIP 2015 Montpellier Page 7

8 Transparent yield simulation SHIP 2015 Montpellier Page 8

9 Transparent yield simulation SHIP 2015 Montpellier Page 9

10 Engineering Support Saignelégier Solar Heat Integration Buffer Storage Distribution Boiler SHIP 2015 Montpellier Page 10

11 Saignelégier Solar Heat Integration SHIP 2015 Montpellier Page 11

12 Saignelégier Solar Heat Integration SHIP 2015 Montpellier Page 12

13 Saignelégier Solar Heat Integration SHIP 2015 Montpellier Page 13

14 Saignelégier Solar Heat Integration SHIP 2015 Montpellier Page 14

15 Saignelégier Solar Heat Integration SHIP 2015 Montpellier Page 15

16 Customer Satisfaction Collector Performance SHIP 2015 Montpellier Page 16

17 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 SHIP 2015 Montpellier Page 17

18 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

19 SHIP Plants evaluated in the EvaSP Project Mercedes H. Rittmann-Frank SCCER EIP WP 2 Folie 19

20 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 C Parabolic Trough 2 Saignelégier Dairy 120 C Parabolic Trough 3 Fribourg Dairy 120 and 160 C Parabolic Trough 4 Genf Hospital Evacuated Tube 5 Gränichen Paint C Evacuated Tube 6 Yverdon Bitumen 160 C Evac. Flat Plate Mercedes H. Rittmann-Frank SCCER EIP WP 2 Folie 20

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25 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 SHIP 2015 Montpellier Page 25

26 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 kw th ) 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. SHIP 2015 Montpellier Page 26

27 NEP Solar AG Albisriederstrasse 184b 8047 Zürich, Switzerland SHIP 2015 Montpellier Page 27