Feasility for SDH in Region Västra Götaland Jan-Olof Dalenbäck Project Manager; Professor CIT Energy Management AB; Chalmers University of Technology
SDH - Billund – 21-22 september, 2016 Jan-Olof Dalenbäck
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Acknowledgement • Survey of heating plants (wood) MSc Thesis Louise Thrysøe Ekström (Required use of several sources ..)
• Survey supported by
Jan-Olof Dalenbäck
SDH in Sweden First plants in end 70’s Replace oil in DH .. Largest in the world until 2000 Positive wood fuel developments .. .. easily stored until winter .. • 1978-2016: 35 plants >500 m2 • Out of which 12 taken down • Oldest in operation >30 years • • • •
Jan-Olof Dalenbäck
Next to the 1st SE wind power plant 5 x 225 kW
Falkenberg, SE - 1989 Wood chips DH plant – 8 MWth 5 500 m² - ~4 MWth 1 000 m3 water tank
Recycled 2008: 40t Al; 2t Cu; 1.4t Fe; glass; insulation .. Jan-Olof Dalenbäck
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Västra Götaland
Jan-Olof Dalenbäck
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Västra Götaland • • • • • •
1.6 million inhabitants 24 000 km2 (0.56 Denmark) 66 inhabitants/km2 (EU average) 49 municipalities 5 000 to 500 000 inhab./mun. District heating w. wood fuels in all cities and urban areas
Jan-Olof Dalenbäck
District heating • Solid wood fuels (local providers) • Waste (incernation households) and waste heat (industries) • Natural gas - 1 large CHP (GE) to be converted to biogas • A few heat pumps (sewage water) • Oil (fossil and bio) for maintenance and peak loads
Jan-Olof Dalenbäck
Solid wood fuels • Wood chips (wet and dry) • Forest residues (stumps, twigs, etc) • Wood industry residues (saw dust, cutter shavings, etc.) • Recycled wood (timber, planks, boards, etc.) • Wood briquettes & pellets • 1 straw boiler ..
Jan-Olof Dalenbäck
Municipalities - Heating plants (prio wood fuels) Ale (GE) Alingsås Bengtsfors Bollebygd Borås Dals-Ed Essunga Falköping Färgelanda Grästorp Gullspång Göteborg (GE) Götene Herrljunga Hjo Härryda Karlsborg Jan-Olof Dalenbäck
7 5 1 1 1 1 5 1 1 1 6 4 2 1 3 2
Kungälv (GE) Lerum Lidköping Lilla Edet Lysekil Mark Mariestad Mellerud Munkedal Mölndal (GE) Orust Partille (GE) Skara Skövde Sotenäs Strömstad Svenljunga
4 4 4 1 2 5 2 1 1 1 1 7 7 1 1
Stenungsund Tanum Tibro Tidaholm Tjörn Tranemo Trollhättan Töreboda Uddevalla Ulricehamn Vara Vänersborg Vårgårda Åmål Öckerö Sum
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Wood chips, etc .. (1) Alingsås Bollebygd Borås Dals-Ed Essunga Falköping Färgelanda Grästorp Göteborg Götene Herrljunga Hjo Härryda Karlsborg Kungälv Lerum
Jan-Olof Dalenbäck
Sävelund Ryaverket Nossebro Marjarp Sävenäs Västerbyverket Herrljunga El Annelund Landvetter Mölnlycke SFV Munkegärde* Aspedalen* Floda 12
35.0 3.0 130.0 1.7 6.0 25.0 3.5 100.0 25.0 6.0 0.8 11.5 5.0 12.0 3.0 8.0 26.0 19.3 5.8
(Agrovärme)
Rör o. Värme AB Agrovärme
Solör Solör Government
1 2 1 1 3 1 4 1 4 3 3 1 5 2 >110
Wood chips, etc .. (2) Lidköping Mark Mariestad Mölndal Orust Skara Skövde Svenljunga Tibro Tidaholm Trollhättan
Töreboda Uddevalla Vara Vårgårda Åmål Jan-Olof Dalenbäck
Östra hamnen Assberg Horred Katrinefors Riskulla Ellös* Harven Uddetorp Lövsängverket Eldaren Stallbacken Kronogården Lextorp Hovhultsverket Industry Biogas -
30.0 26.8 2.0 64.7 91.0 4.0 10.0 8.0 40.0 19.0 14.0 44.0 8.0 17.0 20.0 50.0 10.0 7.0 0.5 12.0
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Wood pellets .. (1) Alingsås
Bengtsfors
Falköping Gullspång Göteborg
Götene
Kungälv
Lerum
Jan-Olof Dalenbäck
Hemsjö Sollebrunn (Tvätt VGR) Bengtsgården Industrigatan Bäckefors Dals Långed Stenstorp Rya Skarvik Skepplanda Hällekis Lundsbrunn Källby Stålkullen* Kärna Kode Stenkullen
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0.2 0.8 5.5 3.0 2.0 1.0 3.0 1.5 1.0 100.0 3.0 1.0 0.8 0.2 0.2 0.5 1.0
Agrovärme
Solör Neova
Solör (Rindi) Solör (Rindi) Statkraft
Wood pellets .. (2) Skara
Skövde
Strömstad Tjörn Ulricehamn
Vara Vårgårda
Åmål
Jan-Olof Dalenbäck
Ardala Varnhemskolan Axvall Stöpen Tidan Timmersdala Tången Skärhamn Kållekärr Timmele Gällstad Simhallen Kvänum Lena skola Hols skola Nårunga skola Svetsaren
0.4 0.2 1.8 1.0 0.4 1.2 0.6 0.7 2,5 3.0 0.1 0.1 0.1 0.4
Agrovärme Solör (Rindi) Solör (Rindi) Solör (Rindi)
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Wood briquettes .. Bengtsfors Falköping
Lerum Mariestad Munkedal Skövde Uddevalla
Jan-Olof Dalenbäck
Billingsfors Dotorp Floby Jättene Gråbo Lyrestad Långedalsverket Skultorp Arödsverket
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1.2 9.0 4.5 3.5 6.0 1.4 3.0 1,5
(+Pellet 1.5)
Wood fuel plants • Some large CHP plants • Large and small heat only boilers • Large boilers have heat recovery on combustion (exhaust) gases .. • Most boilers can be controlled down to 20% of design power (.. only some have buffer storages !?)
• Not suitable for on/off .. (.. except for pellet boilers ..) Jan-Olof Dalenbäck
Feasibility studies • Focus om wood chips boiler plants design power 4 - 30 MWth (> 1 MW - 1 400 m2 collector area ..)
• • • •
Lowering DH return temperature ? Suitable placing of collector array Suitable placing of storage tank Suitable system design that allows ”optimal” operation solar + boiler
Jan-Olof Dalenbäck
Jan-Olof Dalenbäck
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Ellös, SE .. 2010 New DH system Wood chips - 4 MW 1 000 (2 000) m2 200 m3 water tank
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Convincing message ? • Several (new) plants in DK .. (visits, share experiences, etc.)
• Imprived collectors and systems (i.e. in comparison to the 80‘s and 90‘s)
• Advantages to combine solid wood fuels and solar collectors + storage .. (impoved system efficiency, less transports)
• Competitive costs .. (maybe demo investment support?)
Jan-Olof Dalenbäck
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Experiences • We don’t replace any fossil fuels ! • We don’t need to promote DH ! • We need to explain solar system operation to some extent .. • We need to show reliable system designs .. (Don’t touch my plant!) • We need to show feasible investment costs .. (Too expensive!)
Jan-Olof Dalenbäck
More info in due time ! The sun shines and the woods grove !
[email protected] www.solar-district-heating.se Jan-Olof Dalenbäck
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