Smart District Heating

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1 Per Alex Sørensen: B.Sc., Head of Dept. PlanEnergi PlanEnergi: Consultant Engineers More than 25 years with renewable heating biomass biogas solar thermal heat pumps district heating

2 European Initiative on Smart Cities Energy networks Heating and Cooling Innovative and cost effective biomass, solar thermal and geothermal applications Innovative hybrid heating and cooling systems from biomass, solar thermal, ambient thermal and geothermal with advanced distributed heat storage technologies. Highly efficient co or tri generation and district heating and cooling systems. Electricity Smart grids, allowing renewable generation, electric vehicles charging, storage, demand response and grid balancing. Smart metering and energy management systems. Smart appliances (ICT, domestic appliances), lighting (in particular solid state lighting for street and indoor), equipment (e.g. motor systems, water systems) To foster local lres electricity i production (especially PV and wind applications). i

3 Example: Dronninglund and Marstal m² HP Gas motor Bio oil Load/usage m 3 Very cost effective heat storage (demonstration)

4 Relative price of heat 140% 120% Relative heat price % 100% 80% 60% 40% 20% 0% 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% RE fraction % Higher solar fractions seem reachable with out dramatic increase in heat price RE fraction: Part of load covered by solar and (wind driven) heat pump

5 Why is this possible? Interaction with liberal electricity market Benefits from combining technologies Very cheap and high performing solar systems Improved storage technology (simple/cheap) LARGE SYSTEMS small storage losses

6 Interaction with liberal electricity market

7 Interaction ti with liberal l electricity it market kt Many possibilities Flexibility Winter: High electricity price run CHP, earn money make cheap heat Low/medium electricity price run heat pump make relatively cheap heat Summer: Low electricity price run solar only make free heat Very low electricity price run heat pump p make free/cheap heat

8 Benefits from combining technologies Solar: Produce free heat Heat pump: Produce cheap heat Fast capacity regulation (load) earn money Reduce storage volume CHP: Produce valuable electricity earn money Fast capacity regulation (prod.) earn money Storage: Gives flexibility Makes combinations possible

9 Very cheap and high performing solar systems Collector parameters Improved storage technology The collector applied in Dronninglund dhas (simple/cheap) the efficiency parameters: n 0 : (AR glass) a 1 : 2.43 (Teflon convection barrier) a 2 : The collectors are placed with: slope: 30 (low angle is optimum due to shadows from row in front) azimuth: 0 (South) Row distance: 4.5 m (collector front to collector front) Collector field installed 200 /m²

10 Store parameters Smart District Heating Water pit with liner (un-insulated to earth) Improved storage technology (i (simple/cheap) l/h The top of the store is in Dronninglund assumed insulated with LECA ; average insulation thickness 0.5 m and in Marstal with 0.2 m coated PUR-elements Price: /m 3 for storages more than 50,000 m 3

11 Statust Dronninglund (SUNSTORE 3) under approval by the local authorities. Supported by the Danish EUDP program Marstal (SUNSTORE 4) is under construction. Ready Spring Supported by EU 7 th Framework Pending issue: Tax on heat pump heat production

12 By the way: Solar district heating is exploding in Denmark International activities: IEE project SDH Take off SUNSTORE 4 IEA SHC Task 45 Large systems

13 Heating price 70 /MWh Solar heat N gas

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16 LARGE Potential in Denmark AND elsewhere! DK Engineer Association, 2006: Energiplan : 2.7 TWh / 10 % of the DK district heating demand (8 mill. m²) Danish Energy Authorities, 2007: Solvarme status og strategi : 2.7 TWh / 10 % of the DK district heating demand 2050: 7 TWh / 40 % of the DK district i heating demandd Danish District Heating Association: Varmeplan Danmark %20VarmeplanDanmark2010Hovedrapport.ashx 2020: 4mill. m², 1.4 TWh, 5 % of the DK district heating demand 2030: 8mill. m², 2.7 TWh, 10 % of the DK district heating demand

17 Rise m² / 2,8 MW Ærøskøbing m² / 3,4 MW (enlarged 2010) Marstal m² / 13 MW (to be doubled soon)

18 Hillerød m² / 2,1 MW Sønderborg m² / 4.2 MW Broager m² / 7.0 MW Tørring m² / 5.1 MW

19 Ulsted m² / 3,5 MW Brædstrup m² / 5,6 MW Nordby m² / 1,8 18MW

20 Solar District i t Heating Take Off Public workshops See web for updated info district heating.eu

21 SUNSTORE 4: Demonstration plant in Marstal. 50% from solar (33, m2) and heat pump. 75,000 m3 pit heat storage. Wood chip fuelled CHP. Ready Total heat production32,000 MWh/year International activities: 20 more plants with 100% RES, 50% solar, storage calculated in 10 countries Workshops

22 IEA SHC Task 45 just started: 1 st January 2011 Kick off meeting just held: 5 6 th April 2011 in Barcelona Next meeting in Canada: th October 2011 Registration at homepage shc.org/task45/ Interested? Contact: [email protected]

23 Strategic Energy Technology Plan (SET Plan) European Initiative on Smart Cities setis/technologyroadmap/european initiative on smart cities

24 The future?! Renewable district heating and cooling!? Flexible Renewable CO 2 neutral Cost effective Thank you for your attention Per Alex Sørensen [email protected]