L'intervento di Markus Gründler (SOLID) in occasione dell'evento "Solare termodinamico di piccola taglia: impianti dimostrativi in Sardegna e calore di processo industriale" che si è tenuto a Pula (CA) il 25 settembre 2015.

1. Solar Process Heat
Potential
Target industries
Experiences of SOLID
Best practice – Meat factory Berger
Industrial Workshop on Solar Process Heat, 25th of
September 2015

2. • Solar thermal is well known for:
- Heating & Domestic hot water
- (Solar Cooling)
- Actually installed, worldwide: 118 GW/168.000.000 m²
(Source : IEA SHC Task 33 Task 33 report)
Market potential of solar process heat
• Solar thermal barely know for industrial applications:
- Actually installed, worldwide, 2010: 42MW/60.000 m²
(Source: W.Weiß,2010: Speech at Intersolar Conference Solar Process Heat. IEA Task 33/IV and research of AEE Intec)

3. 28 % of total primary energy demand in EU25 is used for
industrial sector
75 % of this energy demand is consumed for heating
applications
Market potential of solar process heat
applications
21 % of this energy demand is below 100°C
40,000,000 m² flat plate collectors
Source: IEA Task 33/IV and research of AEE Intec

4. Preheating is the simplest solution
• Heat up to 100°C
• Either directly to the individual process or within a network of
heat exchangers
• Constant pre-heating at temperatures below e.g. 60°C delivers
the best techno-economic results
Support
individual:
Cleaning,
Cooking,
Drying,
Washing,
etc.
Pre Heating
-
Cold water,
Feed water,
etc.
Heat Grid < 100°C0 - 90°C
SOLAR YIELD
HEAT
Conventional
Heating
Source
HEAT

5. Promising applications for SOLID
• Food industry
– Milk, vegetable, meat, fruits, beer etc.
– Cleaning, pasteurizing, sterilizing, cooking needs below or near 100 °C
– Defrosting is very interesting as they have quite low temperatures
• Chemistry
– in pharmaceutical industry biochemical processes are working exclusively at low
temperaturestemperatures
• Plastic processing
– Bonding and laminating
• Textile industry
– Washing, dying, ironing,…
• Building materials industry
– Drying of bricks and plasterboards
– Heat for accelerating the curing process of the concrete parts

6. Promising applications for SOLID
• Overall industry processes
– Boiler feed water, preheating of feed water & other processes,
cleaning purposes
• Food Industry

7. Overview – References of SOLID
Name Collector array, m² Status
Körner KVK Wies 86 In operation since 2007
Wine producer Peitler 100 In operation since 2003
Gatorade, Phase 1 893 In operation since 2008
Gatorade, Phase 2 2600 In operation since 2010Gatorade, Phase 2 2600 In operation since 2010
Gatorade, Phase 3 3770 In operation since 2013
Stonyfield dairy 3118 Engineering study
CB Chicken Slaughtery 1050 Engineering study
Meat factory Berger 1068 In operation since 7/2013
Krymmoloko dairy, Ukraine 900 To be commissioned

8. Preheating production water
for the soft drinks before the
reverse osmosis plant.
Storage: 38 m³
2008: 893 m²
Gatorade (Pepsi Cola) Phoenix , AZ
2010: upgrade to 2600 m²
2012: upgrade to 3700 m²
Next step to integrate Solar
Heat in the pasteurization in
planning phase today

9. Experiences of solar thermal in industry
• Industry buildings structural issues because of weak
buildings and roofs; specific solutions for substructure has
to be elaborated
• Structural engineers have less knowledge in solar thermal
plants
• SOLID focuses on preheating systems below 100°C
simple hydraulic and control strategy, high solar yields
• High overall system efficiency because of continuous high
energy demand
• No stagnation problems so far heat demand much
higher than solar yield

10. • Economic viability is more likely if:
– Low temperature process heat is required throughout the year
– No waste heat from other processes can be used
– High energy prices
– Dedicated funding schemes are available
Experiences of solar thermal in industry
• ESCO model could be an option

11. • Increased interest in renewable energy sources
– Sustainability as sales argument for customers
– Further development of energy prices ?
Experiences of solar thermal in industry

12. Meat factory Berger, Austria

13. Keydata of Berger, Austria
• Traditional family business since 1890 in Lower Austria
• Refinement of fresh meat to high-end cooked ham and sausages
• Daily production round about 110 tons cooked ham and sausages
• 503 employees
• Energy consumption 2014:• Energy consumption 2014:
• electricity: ~ 10,7 GWh (~50% cooling) ≈ 2.675 EFH
• Gas: ~ 11,1 GWh ≈ 793 EFH
• energy costs: ~ 1,6 Mio EUR/a
• Awards of Klima:aktiv for competence in climate protection 2012
• Energy-efficient-award „Helios“ 2014
• Environment-technology-Award „Daphne“ 2014 in bronze

14. Planned Project 2011

15. Realised Project 2013

16. Hot water preheating for dehumidification of maturation chambers
– 7 m³/h hot water demand
– 240 kW plate heat exchanger
– Usage of waste heat until 40°C
– Solar heating up to 70°
Preheating feed water for steam production (ham cooking)
Solar project Berger, Austria
Preheating feed water for steam production (ham cooking)
– 2,7 m³/h hot water demand
– 200 kW plate heat exchanger
– Usage of waste heat until 28°C
– Solar heating up to 93°
Key data
– 1067 m² high temperature solar panels
– 60 m³ storage tank
– 450 MWh guaranteed solar yield

17. Completion of the foundation

18. Delivery of the storage tank

19. Installation of the tank

20. Tube installation under the soil

21. Earth screws for the underconstruction

22. Finished storage tank

23. Control room

24. Collector field

25. Telemonitoring of the solar plant

26. Monitoring Data - Berger

27. 0
500
1000
1500
2000
2500
3000
3500
4000
TAGESWÄRMEMENGE[kWh]
Preheated feed water > 60 °C
Jahr 2013
41.531 kWh
Jahr 2014
64.776 kWh
Monitoring Data - Berger
0
28/06/13 28/07/13 28/08/13 28/09/13 28/10/13 28/11/13 28/12/13 28/01/14 28/02/14 31/03/14 30/04/14 31/05/14 30/06/14 31/07/14 31/08/14 30/09/14 31/10/14 30/11/14 31/12/14
ZEITACHSE
0
500
1000
1500
2000
2500
3000
3500
4000
28/06/13 28/07/13 28/08/13 28/09/13 28/10/13 28/11/13 28/12/13 28/01/14 28/02/14 31/03/14 30/04/14 31/05/14 30/06/14 31/07/14 31/08/14 30/09/14 31/10/14 30/11/14 31/12/14
TAGESWÄRMEMENGE[kWh]
ZEITACHSE
Hot water loop 40 - 60 ° C
Jahr 2013
158.120 kWh
Jahr 2014
314.990 kWh

28. SPLITTING PREHEATED FEEDWATER – HOT WATER
Delivery Status May 2015: 769.314 kWh
Heat Input Production: 746.158 kWh
Losses: 3 %
Monitoring Data - Berger
HOT WATER 40-60 °C
81%
FEEDWATER >60°C
19%

29. Meat factory Berger, Austria
122 m² parabolic through collectors

30. S.O.L.I.D. Gesellschaft für Solarinstallation und Design
mbH
Puchstraße 85, 8020 Graz, Austria
CEO: Christian Holter & Franz Radovic
Tel: +43 316 292840-0
Fax: +43 316 292840-28
Email: office@solid.at
http://www.solid.at
Thank you!