N0. 2 / 2014 INTERNATIONAL MAGAZINE ON DISTRICT HEATING AND COOLING ENERGY EFFICIENCY DBDH - direct access to district heating and cooling technology www.dbdh.dk CONTENTS 4 THE CHAIRMANS COLUMN 6 Optimal operation at TVIS, Denmark - From production to customer 9 Releasing the full potential of a power plants flexibility 12 Energy efficiency of the district heating network 16 Anshan District Heating energy efficient surplus heat utilization project 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 CHAIRMANS COLUMN By Lars Gullev, Managing Director VEKS, and Chairman of DBDH ENERGY EFFICIENCY INCLUDES THE TOTAL ENERGY CHAIN! In this edition of Hot Cool, we have chosen to focus on energy efficiency in a broad sense. The most efficient way of utilizing energy is of course to avoid the u MAKING MODERN LIVING POSSIBLE Achieve energy savings and reduce CO2 emissions Danfoss ball valves have the industrys lowest pressure drop. The valves are designed with a conical inlet and outlet and a cylindrical tube to reduce turbulence. This ensures the lowest possible pressure drop and reduces P6 By Hans Bjørn, Managing Director, TVIS Trekantområdets Varmetransmissionsselskab I/S , and Thomas Østergaard, Chief Project and Market Manager, COWI OPTIMAL OPERATION AT TVIS, DENMARK - FROM PRODUCTION TO CUSTOMER The requirements for efficiency and optimization of Denmark's energy supply and P7 Fig. 1. Graphical view of the operation before and after the commissioning of the new forecasting system. The red curve shows the variation of the outdoor temperatures, while the two grey curves show the flow temperatures (almost equal) towards Kolding and Vejle. The scales to the left indicate P8 Data validation PRESS incorporates a check function that continuously analyzes whether the consumption forecast is within the statistical permissible uncertainty and therefore suitable for use in heat load predictions. There can be many reasons why forecasts may fall outside the allowable probab P9 By Nicolai Hagen Johansen, Managing Director, OE3i RELEASING THE FULL POTENTIAL OF A POWER PLANTS FLEXIBILITY The DTU CHP plant now makes full use of the opportunities that lie in production planning with the help of the Mentor Planner software tool and a close partnership with Aarhusbased ener P10 The flexibility of a plant depends on a number of parameters such as output heat and power, gradients, storage capacity, speed for load change, marginal costs, size and number of production units, capacity limitations in the network and more, says Jakob Bendixen, Head of dcGeneration. But we ne P11 Power market options Mentor Planner ensures that the traders at Danske Commodities know at all times how much flexibility the plant has and, therefore, which trading opportunities they can work with. Danske Commodities traders also help the DTU CHP to avoid imbalances when changes in production P12 ENERGY EFFICIENCY ENERGY EFFICIENCY OF THE DISTRICT HEATING NETWORK By Allan N. Hansen, Technical Manager, LOGSTOR An energy-efficient district heating network can reduce the energy loss from the distribution network and the derived CO2 emission by up to 60% and the total operational costs c P13 By choosing an axial conti produced pipe in series 3, the heat loss can be reduced by up to 35% compared to traditionally produced pipes in series 1. Diffusion barrier secures a good insulation property over time The PEHD casing is not diffusion tight. This means that the insulating gases in P14 Calculation of heat loss, CO2 emission and heat loss costs So it is essential to make an analysis of the pipe system to choose. It is really possible to reduce the total heat loss from a distribution network considerably, and consequently reduce the operation costs and the CO2 emission. If the P15 The calculation program Calculator is free accessible on www.logstor.com/calculator Conclusion By increasing the energy efficiency of a district heating distribution network, the energy loss can be reduced significantly. The saved energy loss can be used to supply more new consumers with enviro P16 ANSHAN DISTRICT HEATING ENERGY EFFICIENT SURPLUS HEAT UTILIZATION PROJECT ENERGY EFFICIENCY By Oddgeir Gudmundsson, Application Specialist, Danfoss; Jan Eric Thorsen, Director, Danfoss - District Energy Division; and Søren K. Christensen, Project and Technical Director, COWI A/S Introductio P17 The full potential for Anshan city is at a much higher scale. Full implementation would lead to annual coal savings of 678,000 tons and avoid emission of 1,380,000 tons of CO2, corresponding to 60-90% of coal savings and CO2 emission compared to the base line. Additional benefits to the city wi P18 ENERGY EFFICIENCY By Jørn Urup Nielsen, Director, Global Utility Business, DESMI Pumping Technology ENERGY EFFICIENT PUMP SOLUTIONS IN WASTE-TO-ENERGY FACILITIES FOR DISTRICT HEATING Energy recovery from waste in general is a very good idea: 1 ton of waste can be converted to 2 MWh heat and P19 Peter Søndergaard, works manager at AffaldVarme Aarhus, next to the DESMI NSLH pump DESMI have also supplied energy efficient pump solutions to two of the other main waste-to-energy plants in Denmark: Vestforbrænding and Nordforbrænding, both of which are situated in Copenhagen. Vestforbrændin P20 ENERGY EFFICIENCY OPTIMIZED BIOMASS PLANTS By Jens Dall Bentzen, CEO, Dall Energy 2 MW pilot In 2009, Dall Energy received a co-financing grant from the Danish Energy Agency for proof of concept and process verification. A 2 MW pilot plant was built in co-operation with SEM Steel Industry A/ P21 The first tests of the demo-plant were made in 2011. There weres some faults with the plant, but these were solved, and in 2012 the plant was in continued operation. Reduction of heating price Due to the ability of using low quality fuel (biomass with high ash and water content) Bogense Distric P22 By Alenka Žumbar Klopčič, Editor, Energetika DISTRICT ENERGY 2014 IN PORTOROZ, SLOVENIA - RENEWABLE ENERGY to be at least 50 %). It will also guarantee highly reliable operation, low maintenance costs, and long life expectancy of the respective systems. In addition, sun is a free power sourc P23 well as two shopping malls, with a combined area of 40,000 m2. Their production well is 1,500 metres deep, and the temperature of thermal water at the outlet is 66 degrees Celsius. A typical characteristic of geothermal energy is a relatively high initial investment, while the operating costs f P24 Cherkasy is a city of almost 300,000 people in central Ukraine. About half of the citys population is served with heat and hot water by the local district heating company. BRUNATA OOD IMPLEMENTS PILOT PROJECTS FOR MODERNIZATION OF THE DISTRICT HEATING SECTOR IN UKRAINE By Milena Vasileva, Mar P25 The participation of Dalcia Brunata, being the subcontractor of the Swiss company that won the tender, includes construction, design, delivery, installation and commissioning of 100 district heating substations Dalcia Brunata with capacity of 0.125 - 1.05 MW for the Public Utility of Vinnitsa C P26 NEW MEMBERS OF DBDH ASSENS FJERNVARME NÆSTVED VARMEVÆRK Assens Fjernvarme (AF) was established in 1961, and has produced CO2 neutral heat and power based on biomass since 1988. Næstved Varmeværk is a consumer-owned district heating company with the aim of establishing district heating plants P27 DBDH PERSON AND DBDH MEMBER OF THE YEAR TELDUST Teldust develops and manufactures air filtration units to be used as subcomponents in complete extraction and ventilation systems. The company delivers the filter units to contractors, who take care of installation of the complete systems at cli P28 MEMBER COMPANY PROFILE: UNO TRANSPORT Along with the last 20 years of economic change and development in the Eastern European countries, a need has grown for reliable logistics and transport, not least for Danish companies. The Danish company Uno Transport has taken up these challenges. Despi P29 Knowledge about the local market, and especially how to work this market, is a key expertise of Uno transport. With local staff and agents in more than six Eastern European countries, Uno Transport has a very international working process for a company of only 61 employees. Many companies often P30 LIST OF MEMBERS Aaen Consulting Engineers Phone +45 8617 5055 Consulting engineers and planners www.aaenas.dk ra@aaenas.dk Dall Energy Phone +45 2987 2222 Aalborg Engineering Phone +45 9631 3950 Supplier of boilers and boiler systems Fax +45 9631 3951 ae@aalborg-engineering.dk ww P31 Hydro-X Phone +45 9828 2111 Boiler water treatment Fax +45 9828 3021 info@hydro-x.dk www.hydro-x.dk Ross Engineering Høje Taastrup Fjernvarme Phone +45 4355 3010 Municipal district heating supply htf@htf.dk www.htf.dk Saseco isoplus Denmark Phone +45 6441 6109 Preinsulated piping s Mediegruppen 1778 Your savings add up Comparison of CO2 emissions KTon 3.0 CO2 2.5 20% 0.51 2.0 1.5 1.0 25 52% 1.06 80% 2.00 Pipe pair Steel, trad. DN: 65 Serie 2 Pipe pair w. diff. Steel, conti DN: 65 Series 2 58% 1.44 TwinPipe Steel, trad. DN: 65 Series 2 Heat loss 10 48% 1.20 Twin