N0. 2 2008 INTERNATIONAL MAGAZINE ON DISTRICT HEATING AND COOLING N0. 3 2008 INTERNATIONAL MAGAZINE ON DISTRICT HEATING AND COOLING District heating - integrating technologies for sustainable communities DBDH relocates See page 25. new adDress and pho ne number DBDH - 30 years of promoting di Contents District heating - integrating technologies for sustainable communities 4 THE CHAIRMANs COLUMN 6 8 11 Small-scale combined heat and power can be perfectly coupled with wind power 14 18 20 Waste to energy - How local communities create value from their own waste 23 Geothermal energy Rely on intelligent flow sectioning Our insight and expertise lead you all the way BROEN District Heating & Gas is the worlds leading supplier of ball valves to the district heating and cooling sector. Our products are specially designed to ensure the optimum isolation of district heating and cooli P _ 4 The Chairmans column Even though security of supply is considered carefully already when designing the DH system, there are always a number of possible threats in the operational phase. These might be: Inadequate maintenance of the DH system Damage to the DH system due to the work of other .,*/(.0%&3/-*7*/(1044*#-& Heat Exchangers for Heating and Cooling Danfoss heat exchangers are available in several sizes to ensure that you can select the optimum solution for your heating and cooling applications. The heat exchangers are available as a compact brazed type and a gasketed plate hea P _ 6 A natural gas-fired CHP plant (Elsinore). The water tank used for storing heat production can be seen in the left side of the photo. Photo: Ole Christiansen Small-scale combined heat and power can be perfectly coupled with wind power By Jesper Werling, MSc Energy Technology Lars Bregnbaek, M P _ 7 Electricity price (EURO/MWh) A model study of a small-scale district heating system is 90 currently being carried out. In this system, the main produc- 80 tion unit is a natural gas-fired engine. Furthermore, there is 70 a heat storage tank and boilers for back-up production. The 60 o P _ 8 Large-scale solar heating By Flemming Ulbjerg, Solar heating expert, Rambøll Denmark Solar energy is the most obvious CO2 neutral heat source we At the same time small-scale solar heating applications have can imagine - and it is everywhere. The only problem is that the been developed and P _ 9 If solar heating is to be part of the national energy policy and The challenge for the district heating company is to run the the political aim is to supply a city with a significant fraction of district heating network efficiently in order to maximize the solar heating energy, this can b P _ 10 Large-scale solar heating Below is presented 2 cases of large-scale solar heating plants This low temperature made it possible to install smaller main in Denmark: pipes and to achieve a very high efficiency of the heat storage and the solar heating plant as well. Case 1: Rise district he P _ 11 By Ole Torp, Manager, Aalborg District Heating Company and Nils-Aage Gregersen, Technical Manager, Aalborg District Heating Company Utilisation of low-grade energy sources With increasing focus on the need to The DH system in Aalborg covers a heat million tonnes per year of fly ash in the P _ Utilisation of low-grade energy sources Heat to the local community of the flue gases is removed from the Today Aalborg Portland supplies the DH 30,000 households flue gases. Water is also produced as system with 1,750 TJ/year (around 30 % In the early 1990s, Aalborg Portland and the st P _ 13 scrapped. In addition, Nordjylland CHP mum heat demand in the DH system is concept which reduces the consump- plant has a diesel-fired gas turbine plant calculated to around 520 MJ/s. To cover tion of fossil fuels, reduces the emis- at its disposal, which can be used to re- that heat P _ Mr. Ove Dalsgaard, Mayor of Ballerup kommune and president of Vestforbrænding opens for the construction of the new district heating network assisted by Mr. Tom Nybroe, director of Nybroe aps (right), the first new district heating consumer. 14 By Per Wulff, Technical and Energy Director, I/S ! {} x } {z x ~ x { z ~ . ! {} {z x ~ x { z ~ x x x } x { } y{ ~ z x { { x { x y x { zx } ~ } z} 1 z x {z x ~ x { z ~ z{ ~ ~ } x~zx zzx x { {z 0 ~ {}z {z x { y { P _ 16 Waste to energy - How local communities create value from their own waste The district heating system Market strategy 2015 for the district heating The first part of the network was established in concrete Since the municipal heat plans and the zoning between dis- ducts with a constant s P _ 17 itable for the Danish society. Accord- Waste in Denmark ingly, Vestforbrænding is only allowed to Status invest in a district heating pipe to sup- Recycling 1000 t 1,600 8,461 9,454 9,752 10,600 11,753 ply a consumer in the natural gas zone Incineration 1000 t 1,900 3,064 3 P _ 18 By Project Manager Jørgen Thastrup, Vattenfall Refurbisment of Amager CHP plant, unit 1 Welcome to Copenhagen welcome to Amager CHP plant! The renovation and conversion project of unit 1 is an integral The CHP plant stands on the site of a former fortress, which part of the Copenhagen P P _ 19 New technology benefits the environment The capacity of the unit will be 80 MW of power and 250 MJ/s When unit 1 resumes operation, this part of Amager CHP plant of district heating. The total costs for the renovation of unit 1 will also be capable of burning biofuels. The occasion clear P _ 20 By Klaus Jacob Jensen, Head of Department, Ramboll Denmark Einar Gudmundsson, biogas specialist, Ramboll Denmark Biogas from the farming industry Why biogas utilisation Several full-scale projects and studies in Denmark demon- The green house gas emissions from the farming industry count P _ 21 North West Jutland is one of Denmarks most important agri- Major barriers and challenges cultural areas. Indeed, farming and food production in the pre- For several years the owners of Maabjerg BioEnergy Ltd. vious Ringkøbing County account for a yearly turnover of 550 have been working P _ 22 Biogas from the farming industry As a result of a comprehensive dialogue with national au- Placing the biogas plant next to Maabjergværket makes it pos- thorities about the possibilities for using the fibre fraction for sible to exploit a number of synergies. One advantage is that combus P _ 23 The geothermal plant is located at Margretheholm, Amager. Photo: Vattenfall and StarKite Luftfoto By Mr. Flemming Andersen, Technical Director, VEKS Geothermal the future energy heating source? In August 2005 the first geothermal demonstration plant in Finally in the third phase, the seco P _ 24 Geothermal energy - the future heating source? Experience for the first years of operation Production A lot of experience has been gathered partly during the con- Due to some of the above mentioned reasons, the expected struction of the geothermal plant partly during the first years geo P _ 25 Extension of the plant at the current location The main idea is to store surplus heat in the summer at 200oC Two main conclusions from the project can be pointed out until in the geothermal reservoir and recover it at a temperature now: range of 195 oC to 75 oC during the rest of the ye P _ 26 DBDH c o - o p e r a t i o n KOREA DISTRICT HEATING CORP. By JaeHee Moon, KDHC of Korea On May 9, the president of the Korean District Heating Corp. The Korean government has called for a Green Society. The (KDHC), YoungNam Kim and the Danish Ambassador from the declaration matches well P _ 27 DBDH welcomes new member Uno Transport A/S was founded by Kim Uno Mogensen in 1999 Today the company employees 9 people in Aarhus, Denmark, and and specializes in transports to and from the Baltic countries, more than 20 in Lithuania. Russia, Belarus and many other East European countrie P _ 28 DBDH m e m b e r company profile COWI Biomass is used to increase the use of green district heating. Green district heating to everyone. The most modern tools for optimization Hansen the biggest Danish cities have If you want to convert to renewable and registration of pipeline networ P _ 29 to the implementation and marketing. Cowi staff is of course assisting the company through all four phases. District heating: common denominator of renewable energy This summer the Ministry of Energy Carbon management has become a part of the districy energy business. launched a new concep P _ 30 List of members Aalborg Engineering A/S Supplier of boilers and boiler systems ABB A/S Monitoring and control for district heating networks Phone +45 9631 3950 Fax +45 9631 3951 ae@aalborg-engineering.dk www.aalborg-engineering.com Phone +45 4450 4450 Fax +45 4450 4311 abb@dk.abb.com www. P _ 31 Rambøll Consulting engineers and planners 7-Technologies A/S Quality software for profitable operation of industriel plants and utilities Siemens Flow Instruments A/S Flow measurement TVIS Heat transmission company of Denmarks triangle area. Phone +45 4598 6000 Fax +45 4598 6700 ramboll@ Theres more to LOGSTOR technology than meets the eye CO2 reductions LOGSTOR district heating pipe systems One pre-insulated district heating pipe looks much like any other. Beneath the surface, however, there can be a world of difference in their insulation, protection and monitoring technologies.