Per Alex Sørensen: B.Sc., Head of Dept. PlanEnergi

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Alfredo Giménez Medina
hace 5 años
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1 Per Alex Sørensen: B.Sc., Head of Dept. PlanEnergi PlanEnergi: Consultant Engineers Nearly 30 years with renewable energy biomass biogas solar thermal heat pumps district heating wind power energy planning

2 The beginning (1988) Solar district heating came from Sweden. First plants are from 1984 Large flat plate collectors (12.5 m 2 ) in series License production startet in Denmark by Arcon Solar Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 2

3 The flat plate solar collector Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 3

4 Marstal (1) 1996 Variable flow introduced Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 4

5 Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 5

$Rise 4 000 m² / 2,8 MW Solar fraction 45%$ Combined with wood pellet boiler Ærøskøbing 4

boiler Workshop Bilbao Miércoles 2 de Octubre

6 Rise m² / 2,8 MW Solar fraction 45% with steel tank. Combined with wood pellet boiler Ærøskøbing m² / 3,4 MW Combined with a straw fired boiler Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen Nordby m² / 1,8 MW Combined with wood chip boiler

7 Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 7

8 Comparison of solar collectors 2003 SUNSTORE 2 - Marstal Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 8

9 Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 9

10 Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 10

11 SDH Workshop Paris June 6-7, 2013 Per Alex Sørensen 11

12 Solar heat combined with natural gas fired CHP a commission leaded by the Danish grid operator Energinet.dk concluded that solar district heating might be socio economic feasible, and opened for support Variable electricity prices for CHP plants were introduced in the Nordic countries. That ment periods with only gas boiler production Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 12

13 Principle diagram for solar and natural gas fired CHP Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 13

14 Example from Tørring, Denmark Keep it large and simple. Example with m 2 collectors in Tørring Cost of land ( m 2 ) Collectors ( m 2 ), pipes, pumps, antifreeze and heat exchangers Fence, ground shaping etc Transmission pipe (1.000 m) Control system Consultancy Total Calculated production MWh/year Yearly capital costs: x 6,7%/year = /year Maintenance 1 /MWh /year Total production costs: /year = ~ 40 /MWh MWh/year 14

15 Financing 1 mio Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 15

17 Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 17

18 Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 18

19 Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 19

20 Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 20

21 Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 21

22 Workshop Bilbao Miércoles 2 de Octubre de 2013 Per Alex Sørensen 22

Balancing the powersystem DK1 ~ 50 % wind? MW 2007 20.6 TWh per year Vision of 50 % windpower! MW 2007 10.

23 Balancing the powersystem DK1 ~ 50 % wind? MW TWh per year Vision of 50 % windpower! MW TWh per year (offshore 4.4 TWh) Subtracting wind power from demand leaves a residual demand and an overflow Windpower and environment

24 Who is going to pay for the residual? MW 2007 Residual demand Overflow This profile demands a lot of expensive regulating power Windpower and environment

25 The SUNSTORE concept can integrate renewable electricity in heat production. Examples Braedstrup and Marstal HP CHP m² Boiler m 3 Very cost effective heat storage (demonstration) End use

26 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

27 Sunstore 4 Marstal Supportet by EU 7 th framework program m 2 solar collectors m 3 pit heat storage 1,0 MW (cooling) compressor heat pump 4 MW wood chip boiler 0,75 MW ORC

28 Design of pit heat storage

Boreholes in Brædstrup Supportet by Energinet.dk and Danish Energy Agency 10.600 m 2 solar collectors 19.

31 Boreholes in Brædstrup Supportet by Energinet.dk and Danish Energy Agency m 2 solar collectors m 3 borehole storage 0,9 MW (cooling) compressor heat pump m 3 buffer tank 10 MW electric boiler

34 Transmission pipes and production potential in Brædstrup, Horsens and Hedensted. DK Solar heat Geotermal heat Long term storage Solar heat Surplus heat Biomass Biogas

35 The future?! Renewable district heating and cooling!? Flexible Renewable CO 2 -neutral Cost effective Thank you for your attention Per Alex Sørensen pas@planenergi.dk

36 SDH Workshop Paris June 6-7, 2013 Per Alex Sørensen 36

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