Energy Cities Fact Finding Mission to Denmark 14 September 2016

Transcription

1 Energy Cities Fact Finding Mission to Denmark 14 September 2016 Introduction to: VEKS Biomass CHP and DH in Køge Geothermal Plant in CPH Morten Stobbe (M.Sc.) Vice President, VEKS

2 ..in the beginning The first steps to construct a DH system in the centre of Copenhagen was taken just after The customers were hospitals and public baths. Heat production was based on CHP.

3 DH in Greater Copenhagen DH in Greater CPH 19 municipalities 4 integrated systems 500,000 households/end-user 34,500 TJ (9,600 GWh) VEKS Partnership between 12 municipalities 150,000 households/endusers 9,000 TJ (2,500 GWh) 40 km

4 Facts on VEKS Vestegnens Kraftvarmeselskab I/S (Western Copenhagen DH company) Established in Ownership: communal partnership (so-called 60 company ) 12 ownership municipalities are liable together for the total loan debt Utilise surplus heat from CHP plants and waste incineration plants Supply to 19 local DH distribution companies Annual turnover: 150 millions 73 employees Danish regulation (heat supply act) - Non-profit company Balance cost and income over time

5 Facts on VEKS Vestegnens Kraftvarmeselskab I/S (Western Copenhagen DH company) CO 2 - neutral DH by 2025 By Greater CPH: 51% Sustainable biomass Avedøre CHP (AVV 1 & 2) Amager CHP (AMV 1 & 4) Køge CHP Environmental Management - ISO / EMAS

6 Facts on VEKS Vestegnens Kraftvarmeselskab I/S (Western Copenhagen DH company) Production: Supply contract with DONG, VF, KARA Own production: Køge CHP, Solrød Biogas Transmission: 135 km DH pipe, 14 pumping stations and 56 heat exchange station Investment in pipe network: 400m Distribution: Conversion from natural gas to DH in Køge 90 km DH pipe, investment of 150m

7 Waste Incineration plant 1985 Local heat plants (Oil, coal) Local heat plants (oil)

8 CTR Waste Incineration plant Pump station RØP 1987 Pump station MAP Heat exchanger stations Local heat plants (Oil, coal) Local heat plants (oil)

9 Avedøreværket CHP Plant Power CTR AMV HCV CHP Plant Waste Incineration plant Heat VEGA Waste Incineration plant 1991 Pump station RØP Pump station MAP Local heat plants (Oil, coal) Heat exchanger stations Local heat plants (oil)

10 Future of VEKS Vestegnens Kraftvarmeselskab I/S (Western Copenhagen DH company) Strategic Energy Planning 2035/2050: Heat Plan Greater Copenhagen I, II and III (CTR, HOFOR, VEKS) Biomass and CHP will continue to play key role Diversification - over time reduce biomass dependency CHP, heat pumps, geothermal and solar thermal, storage Regional Strategic Energy Planning Regional planning facility providing overview, analyses and coordination for municipalities and energy companies CPH region

11 Development in VEKS Vestegnens Kraftvarmeselskab I/S (Western Copenhagen DH company) DH in Køge CHP in Køge Biogas in Solrød Surplus heat from industry (CP Kelco) Geothermal plant Large scale heat pumps Heat storage

12 Solrød Biogas plant Seaweed from the beach-cleaning. Residues from the factory CP Kelco. Industrial biomass. Manure.

13 Solrød Biogas plant VEKS buys the biogas from the plant owned by the municipality of Solroed. Gas engine produce green electricity and utilize the surplus heat for cheap, green district heating. Liquid fraction of the biomass transported back to the farmers as fertilizer to replace existing normal fertilizer. The concept supports the VEKS vision to supply the consumers with CO2 neutral district heating in 2025.

14 District Heating in Koege (conversion from natural gas to DH)

15 Køge DH - Development Plan Planned in 2010/11 - initiated in phases 900 customers (large customers > 300 m2) 207,000 MWh EUR 150m 90 km DH pipe (DN40-400) CO 2 -reduction of 40,000 t/y

16 Biomass based CHP plant in Køge

17 Køge CHP Plant History of ownership Junckers Industries is a producer of solid wooden floors (unit 7) and 1998 (unit 8) : Built by the Junckers Industrier as an industrial CHP plant for production of process steam 2000: The CHP plant is sold to Energy E2 (today DONG Energy), Junckers Industrier takes responsibility for the operation of the plant. 2006: DONG Energy takes responsibility for the operation of the plant. 2012: VEKS takes responsibility from DONG Energy of ownership and operation of the plant.

18 Køge CHP Plant Connection to the existing DH transmission network

19 Køge CHP Plant Unit 7 and Unit 8

20 Køge CHP Plant Unit 7 Constructed in 1986 Grate fired with combined dust- and oil burners. Total energy input 46.5 MJ/s Power output 9 MW Outlet on 3 and 13 bar level and possibility for bypass. Condensator Out of operation In operation again January 2013

21 Køge CHP Plant Unit 8 Constructed in 1998 Grate fired with combined dust- and oil burners. Total energy input 56.2 MJ/s Power output 16 MW Outlet on 3 and 13 bar level and possibility for bypass. Condensator Reconstruction From extraction to backpresure.

22 Sourcing of sustainble biomass VEKS is part of the voluntary Danish branch agreement on sustainable biomass (FSC/PEFC/SBP) Biomass from Junckers Industrier ,000 tonnes/year Woodchips Saw dust Dust Duration of contract until 2027 FSC wood

23 Sourcing of sustainble biomass Sustainable biomass from external suppliers ,000 tonnes/year Woodchip or logs 4 Danish suppliers by truck 1 Swedish supplier by truck/ship Duration of contracts - From 1-2 years

24 Geothermal plant - Amager

25 Geothermal plant - Amager One production well (at an angel) and one injection well Saltine geotermal water appr. 73 C from appr. 2,6 km, - returned when cooled down to appr. 18 C Heat used in DH system both by direct exchanging and via absorption heat pump. Design capacity from underground is 14 MJ/s

26 Geothermal plant - Amager Greater Copenhagen Geothermal Cooperation (Hovedstadsområdets Geotermi Samarbejde) establised 2000 CTR, HOFOR, VEKS and DONG (later out) Geotermal Demonstration Plant has operated since 2005 Investment: EUR 33m Recently renovated for EUR 7m