N0.1 / 2015 INTERNATIONAL MAGAZINE ON DISTRICT HEATING AND COOLING SECURITY OF SUPPLY DBDH - direct access to district heating and cooling technology www.dbdh.dk CONTENTS 4 THE COLUMN 6 LOW TEMPERATURE DISTRICT HEATING IS A REALITY 8 GREATER PREVALENCE OF HEAT PUMPS IN DISTRICT HEATING - WHY, WHERE, HOW AND WHEN? 11 A EUROPE WITHOUT LANDFILLS AND RUSSIAN GAS 13 SECURITY OF SUPPLY - A HISTORY OF SHIFTING CHALLENGES 17 20 MOVING UP THE AGENDA: EUROP DISTRICT HEATING FROM A-Z RELY ON 50 YEARS OF EXPERIENCE IN ALL DISTRICT HEATING APPLICATIONS 16 CHP POWER PLANT SUB-STATION BOILER HOUSE CONSUMER CONNECTIONS MAIN PUMPS DISTRIBUTION PUMPS BOILER SHUNT PUMPS PLATE HEAT EXCHANGE FLOW FILTER PUMPS PRESSURE HOLDING SYSTEM LULL HEAT PUMPS P4 THE COLUMN By Lars Gullev, Managing Director VEKS, and Chairman of DBDH SECURITY OF SUPPLY - MORE THAN JUST SECURITY OF FUEL In this issue of Hot Cool, we put our focus on security of supply. Many people associate security of supply with having access to fuels such as oil, coal or natural gas. Specifying the perfect district heating substation takes an experienced partner 2 kW-4 MW District heating flatstations and substations. Whatever you need, we can supply it. You know the challenges in finding the perfect substation match for your building or network. At Danfoss, we offer you exper P6 FOCUS SECURITY OF SUPPLY By Operational Manager Hans-Henrik Høg, Albertslund Forsyning and Senior Project Manager Theodor Møller Moos, COWI A/S LOW TEMPERATURE DISTRICT HEATING IS A REALITY In Albertslund (a suburb of Copenhagen built in the 1960s), a large renovation programme is underway. P7 Fig. 2, 3 and 4.The houses before, during and after retrofit Under floor heating on the ground floor combined with radiators on the first floor also reduce the requirement for high supply temperatures (the supply temperature was 90 C in the original network). The new network is designed for 55/ P8 FOCUS SECURITY OF SUPPLY By Kim Søgaard Clausen, Grøn Energi, the Danish District Heating Association, on behalf of the consortium behind the report GREATER PREVALENCE OF HEAT PUMPS IN DISTRICT HEATING - WHY, WHERE, HOW AND WHEN? Heat pumps - an important player for meeting energy political P9 Internal and external heat sources - examples of specific projects There are basically two models on how to integrate a heat pump in the district heating production: 1. Heat pump with external heat source, for example waste water, surplus heat from industry or ground water. Heat pump and possibl P10 Is a heat pump competitive? Whether a heat pump is a good investment depends on a case-based assessment, which again includes a number of assumptions. As an example, the following figure shows heat production of heat pumps with a COP of 3 and 4 compared to natural gas-fired cogeneration. Produ P11 A EUROPE WITHOUT LANDFILLS AND RUSSIAN GAS FOCUS SECURITY OF SUPPLY By Babcock & Wilcox Vølund A/S Some 80 million tonnes of waste end up at landfills in the EU each year. At the same time, Europe imported 106 billion cubic metres of gas from Russia in 2012. In light of these trends, Dr. El P12 Similarly, a number of materials are limited in the number of times they can be recycled. The fibre contained in newspaper, for example, degrades after about five rounds of recycling. In this case it can still be used as a source of energy. Other materials are directly unfit for use in a circul P13 SECURITY OF SUPPLY FOCUS - a history of shifting challenges SECURITY OF SUPPLY By Hans Henrik Lindboe, Partner, Ea Energy Analyses Independence from fossil fuels before 2050 is a formulated goal decided by a majority in the Danish parliament. An obvious reason for this is the reduction of P14 Short-range marginal costs The market model is auction based; all electricity producers in an area receive the same price for their product at a certain time. Due to the auction principle, the producer has an incentive to bid into the market with prices based on the short-range marginal cost (S P15 The sharp drop in prices during 2009 was a direct consequence of the financial crisis. The temporary price-increase in 2011 was mainly due to less rainfall and consequently lower than normal hydropower production in countries such as Norway and Sweden. that Denmark, Scandinavia and Germany are P16 A capacity market is a market construction where the suppliers of firm capacity will receive payment. If such payment is high enough, the incentive to keep existing capacity in operation or even to build, new capacity will be sufficient to uphold the system adequacy. Regardless of the prices in P17 By Dr. Ing Antonio AguilÛ-Rullan is Project Advisor for Energy Efficiency and Renewable Energy at the Intelligent Energy Europe and Horizon 2020 programmes of the European Commission, Executive Agency for Small and Medium Enterprises (EASME), European Commission. And Clare Taylor (MEng, Oxon) a P18 According to Nicolas Février, who is coordinating the project, City planners have a pivotal role in developing eco-districts where the upgrading of building stock goes hand in hand with the establishment, expansion or modernisation of district heating and cooling networks. This Atlas will allow P19 Open for business Moving into implementation, other projects are using EU funding for project development assistance to leverage further investment. An innovative biogas project led by Solrød Municipality in Denmark has now achieved EUR 12.7 million amount in investment, which was kick-started P20 By Johnny Iversen, Grontmij; Christian Jacobsen, Grontmij; Kasper Qvist, Grontmij ULTRA LOW TEMPERATURE DISTRICT HEATING PROVES ITS WORTH 15-20C LOWER RETURN TEMPERATURES AND 45 % HEAT LOSS REDUCTIONS In continuation of an Energy Development and Demonstration Project (EUDP) 2011-13 in the Cop P21 What will the future bring? The next major LTDH demonstration project will take place in Geding, a village 10 km north-west of Denmarks second largest city, Aarhus, under the auspices of the citys district heating supplier, AffaldVarme Aarhus. During the summer of 2014, 25 LTDH units with integ P22 WORKING SUCCESSFULLY WITH AUTHORITIES IMPLEMENTING DISTRICT ENERGY By Peter Heymann Andersen, Executive Director, Ramboll; Jacob Bjerregaard, Analyst, Ramboll; Patrick Durup Thomsen, Civil Engineer, Ramboll Originally published in Euroheat & Power ll/2014 Today 72% of all EU citizens live in P23 Model 1 Strategy, Planning & Execution Attaining reliable and long term energy solutions calls for the right structural balance between private sector knowledge and public sector framework. The highly specialized services provided by private sector companies enable the public sector to provid P24 Political ambition is the key driving force from which concrete goals are derived, and on which a solid framework should be founded. In order to ensure the robustness of such a framework, politicians and decision makers should be fully informed. In this particular phase, private sector is an im P25 business case for a district heating scheme, as it can drive down uncertainties regarding the critical mass of heat offtake. Private and commercial consumers may take years to connect, which is critical for the payback time of the infrastructure. The district energy infrastructure is a precondi P26 Denmark, Sweden and Finland are all countries where city wide district energy concepts have proven both private- and socio economically viable on widely different backgrounds. Developing suitable business models is the key challenge, taking into account national legislation, local resources as P27 NEW MEMBERS OF DBDH ENOPSOL EA ENERGY ANALYSES Enopsol has designed, planned and installed approx. 30 groundwater cooling and heating systems in Denmark since the 1990s. Ea Energy Analyses is a Danish consulting company providing consulting services and performing research in the field of en P28 MEMBER COMPANY PROFILE: GOTTLIEB PALUDAN ARCHITECTS The new biomass-fuelled CHP plant Värtaverket, located on the edge of Stockholms inner city, will be the largest biomass power plant in Sweden. Illustration by Gottlieb Paludan Architects. Designing energy plants that we can live with Energ P29 Värtaverket under construction. Photo by Hans Ekestang. The construction work is advancing, and the plant is expected to be completed in 2017. Photo by Hans Ekestang. Blasting a fuel tunnel in the rock The solution to these numerous and seemingly contradictory requirements is to blast out spa P30 LIST OF MEMBERS Aaen Consulting Engineers Consulting engineers and planners Aalborg Engineering Supplier of boilers and boiler systems Aalborg Forsyning ABB Monitoring and control for district heating networks Abratek Wear resistant solutions for power stations Aerovit Boiler cleaning Aff P31 Grontmij Consulting engineers and planners Grundfos Phone +45 8750 1400 Fax +45 8750 1490 grundfos@grundfos.com www.grundfos.com Pumps, controls and related equipment HentechSolution ApS Mechanical seals HOFOR Copenhagen Energy Hydro-X Boiler water treatment Høje Taastrup Fjernvarme Muni 70% Operating costs 30% Investment costs www.logstor.com Discover a lifetime of value When as much as 70% of the total cost of a District Energy pipe system goes into its operation, it is vital to make the best investment decisions right from the start. At LOGSTOR, we deliver value across the ent