Hot Cool 4 2017
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N0. 4 / 2017 INTERNATIONAL MAGAZINE ON DISTRICT HEATING AND COOLING TECHNICAL INNOVATION AND OPTIMISATION DBDH - direct access to district heating and cooling technology www.dbdh.dk
CONTENTS 4 THE COLUMN : YOUR DIGITAL SUPPLY AND PERSONAL DATA METER 5 COUPLING OF ENERGY SECTORS IS A KEY TO AN EFFICIENT TRANSITION TO A RENEWABLE ENERGY SUPPLY 7 INTELLIGENT USE OF INTELLIGENT PUMPS 10 ENERGYLAB NORDHAVN, DENMARK A FULL-SCALE SMART CITY ENERGY LAB 13 OPTIMAL OPERATION OF
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 Bent Ole Gram Mortensen, Professor, Juridisk Institut, Syddansk Universitet YOUR DIGITAL SUPPLY AND PERSONAL DATA METER DIGITAL CONCERNS The digitization is upon us. Yes, you get the impression when you leaf through the daily press - digitally as well as analogously. It is not so
boiler Fuel 133 Fuel boiler 40 Heat 40 40 Fuel 100 CHP 45 22 Heat 40 18 P5 Transport (30) FINANCE AND OWNERSHIP Wind (50%) 19 In order to reach an energy system based on renewable and sustainable resources in an efficient way, we need to transform our energy systems to allow fluctuating
P6 FIRST STEPS TOWARDS SECTOR COUPLING Traditionally, the different energy consuming sectors have been completely isolated from each other, which has led to the traditional energy system structure (see Figure 1). Here, fuel is used to cover all energy demands through single-sector conversion units,
P7 INTELLIGENT USE FOCUS TECHNICAL INNOVATION & OPTIMISATION OF INTELLIGENT PUMPS By Anders Nielsen, Application Manager, CBS HVAC Solutions, Grundfos How new pumps can be a tool to increased system efficiency Traditionally, we use pumps in hydronic systems to deliver the needed flow and press
P8 THE SOLUTION TO THE CHALLENGE Instead of adding all the pressure right at the beginning, it is possible to add the pressure when we need it. This can be illustrated as below: to the system generally is reduced. With more manageable differential pressure in front of customer installations, the r
P9 We have a traditional tree-structured network, where calculations have shown that flow temperatures can be reduced to 70C. This is just an example, as each network has its own unique conditions for what is possible. First lets see what the current heat losses as well as pump operating cost are.
P10 FOCUS TECHNICAL INNOVATION & OPTIMISATION By Kristian Honoré, Energy Planner, Hofor ENERGYLAB NORDHAVN, DENMARK A FULL-SCALE SMART CITY ENERGY LAB The future district heating system will include more fluctuating renewables and low temperature heat sources, and this requires technical innovat
P11 STORAGE AND FLEXIBILITY IN THE DISTRICT HEATING SYSTEM Heat storage and flexibility are very important measures for optimizing production and operation of the DH system to reduce the production from expensive and fossil-fueled peakload boilers. Flexibility in the DH system can also support and
P12 MEASURED HEAT LABELLING SYSTEM OF BUILDINGS FOR BETTER DESIGN AND OPERATION A heat labelling system based on measured heat consumption and heat profiles of existing buildings has been developed as an alternative to the existing heat labelling system. The proposed evaluation method deviates radi
P13 FOCUS TECHNICAL INNOVATION & OPTIMISATION By Michele Tunzi, Miaomiao He, David Allinson and Kevin Lomas - Loughborough University, UK. Mark Gillott and Lucelia Taranto Rodrigues - University of Nottingham, UK. Svend Svendsen, Technical University of Denmark Kgs. Lyngby, Denmark, Charles Brads
P14 OPERATION STRATEGY AND ENERGY PRICES The dynamic demand profiles for each end-user were obtained using a stochastic approach and the results were validated by comparing these to typical UK profiles available in literature for similar buildings, occupancy and use. The strategy implemented to opt
P15 Figure 2: CES optimal summer operation An extract of a weekly summer operations for the scenario with forward temperature of 55 C, simulated hourly with energyPRO, is presented in Figure 2, highlighting the optimal operation for the CES analysed. The battery and thermal store are key component
P16 The calculated shares of the electricity for heated DHW presented in Table 1 are in line with the findings presented in a recent Danfoss report, where the HIU with electric heaters were tested in a real domestic application in Denmark. Finally, a few recommendations need to be considered in the
P17 FOCUS TECHNICAL INNOVATION & OPTIMISATION By Jan Eric Thorsen, Director, Danfoss Heating Segment Application Centre; Dr. Marek Brand Application Specialist, Danfoss Heating Segment; Dr. Oddgeir Gudmundsson Director, Projects, Danfoss Heating Segment HEAT EXCHANGERS WITH INCREASED THERMAL LEN
P18 The increased thermal length (named TL1 and TL2) of the new heat exchangers are approximately a factor 1.4 compared to the old ones, equivalent to number of thermal units (NTU), increase from 3.5 to 5 (design conditions). An important issue to include in the analysis is the operational conditio
P19 CONCLUSION The concept of DH has a great role to play in the future sustainable and renewable based energy system, but it has to develop. In the process of continuous energy efficiency improvements of existing DH systems, and going forward towards the transition to the 4th generation DH, it is
P20 FOCUS TECHNICAL INNOVATION & OPTIMISATION DATA-DRIVEN DISRUPTION UNLOCKING THE DISTRIBUTION NETWORK BLACK BOX WITH SMART METER DATA By Steen Schelle Jensen, Head of Product Management Heat/Cooling Solutions, Kamstrup Linking frequent smart heat meter data with facts about the district hea
P21 METER DATA + FACTS = SAVINGS In close cooperation with a number of our customers, Kamstrup has created an analytical tool based on a model connecting information from the meters with facts about the utilitys pipe network (Figure 1). Its calculations are therefore highly specific and relevant as
P22 THE MODEL BEHIND THE TOOL The calculation model, illustrated in Figure 1, shows how all the meter readings are used (T,Q) together with a map of the distribution network, to deduce the flow and temperature, (t,q) everywhere in the distribution network. All meters share the same supply unit, and
P23 By Lauren Salmon, Reseacher (Energy and Sustainability), Changeworks DISTRICT HEATING: IS IT DELIVERING AFFORDABLE AND SUSTAINABLE HEAT FOR UK SOCIAL HOUSING? In the UK, district heating is billed as one of the key routes to delivering affordable heat in a sustainable way. As a result, it is
P24 BARRIERS AND APPROACHES TO DEVELOPMENT Development of DCCH schemes in UK social housing is challenging from the outset and a number of SHPs encounter barriers before they have even begun. Survey responses showed that the upfront cost, lack of subsidies and limited knowledge and experience all p
P25 AFFORDABILITY Given the lack of available data to perform a robust financial analysis, the study looked to use the quantitative data available alongside qualitative evidence from SHP employees and residents to assess affordability of the schemes. In addition to this some modelling was carried o
MEMBER EW N R BE EM M EW N R BE EM M NEW P26 NEW MEM NEW MEMBERS NEW MEMBERS In terms of sustainability, inefficiencies in the system, established In order to encourage and support SHPs the UK Government MEMBE NEW NEW MEMBERS BERS MbyEM during the design and development phase had direct and needs to
R NEW MEMBER NEW NEW ME RS BE EM M EW N RS BE EM M EW P27 MBERS NEW MEMBERS N BE EM M EW N RS BE EM M EW N R BE EM M ERS NEW MEMBERS NEW NEW MEMBERS NEW RS BE EM M EW N RS BE EM M MEMBERS NEW NEW MEMBER N R BE EM M EW N R BE EM M EW N R NEW MEMBER BERS NEW ME EM M NEW MEMBERS OF DBDH EW N RS BE EM M
P28 MEMBER COMPANY PROFILE MOE Furthermore, the company has put its mark on various domicile and office buildings, shopping centers, care facilities, universities, hospitals and all sorts of infrastructure. District heating, biomass and sustainable energy is an important area for MOE. The company
P29 Also the Baltics is an area of interest for MOE and is actually one of the reasons why the company decided to join DBDH. According to Finn Bruus, the primary focus is not the bottom line, but more about finding a strategic partner or a possible acquisition. The same goes for the UK market, whe
P30 Aalborg Energie Technik www.aet-biomass.com Aalborg Varme Municipal district heating supply. Primarily CHP and surplus heat from industry and waste incineration www.aalborgforsyning.dk ABB Entire DE networks projects, including systems for control & automation, pump stations and substations
P31 Gottlieb Paludan Architects Kamstrup Supplier of energy and water metering solutions for heat, cooling, water and electricity www.kamstrup.com www.gottliebpaludan.com Grundfos Pumps, controls and related equipment www.grundfos.com KMD IT solutions energy management technologies www.kmd.