In this document you will find. 5 DH solutions to be included in Polish EU Structural funds Case study: TVIS Case study: Logstor

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1 At the request of Danish ministry of foreign affairs, DBDH has work out a short list of DH-solutions and cases, that could be advantageous for Poland to include in their EU structural funds. Poland is about to make some massive investments in energy efficiency through EU-funds, among these 1,216 billion euro for heat distribution network. The following downloads are the DBDH recommendation and cases. In this document you will find 5 DH solutions to be included in Polish EU Structural funds Case study: TVIS Case study: Logstor

2 District Heating Solutions to be included in Polish EU Structural funds District energy is the most efficient way to supply buildings with heating and cooling in cities. It can utilize all kinds of energy sources, including renewable sources such as wind, surplus electricity via heat pumps, and solar and geothermal heat, which can all be stored in the district energy network until it is needed. This flexibility ensures enough fuel at all times and makes it an important part of the future low-carbon world. The following district heating solutions could be advantageous for Poland to include in their EU structural funds. That could be of great benefit to the Polish environment, the security of heat supply, the local economy and create new jobs: 1. Utilization of locally available fuel resources. There is a huge untapped potential in locally available energy resources such as industrial surplus heat, straw, wood chips, biomass residue from industries, segregated waste, etc. Utilizing these resources would green the Polish energy infrastructure substantially, reduce import costs, boost local economy and create new jobs. 2. Modernizing the energy production portfolio. The Polish energy production facilities (boilers) are quite efficient for the most part. However, they are mono-fuels units, mainly build for burning coal. To utilize point 1 new boiler systems must be build. In addition, Poland have an extensive potential for implementation of thermal solar energy. 3. Transmission pipelines. By building transmission pipelines connecting smaller district heating networks, there will secure a flexible system that always utilize the cheapest and least polluting heat source available in the network. This will lead to better utilization of waste incineration, geothermal heat, solar heating etc. 4. Building accumulation capacities. Many plants have issues with high peak load demands. Building heat accumulation capacities, would mitigate a lot of the peak load, create a more energy efficient system and make interaction with other energy infrastructure (such as the electricity network) possible. 5. Energy efficient District Heating. Poland could benefit extensively from lowering the temperature set in the DH networks. This will require better monitoring systems, high performance flow optimized ball valves, fully automated substations, preinsulated pipes and installation of speed-controlled pumps The DHC system in Logstor, Denmark is one of many excellent examples of where, Poland could look for inspiration on how a holistic energy infrastructure is being built in Denmark.. The first thing that is noticeable of Logstor is the company s very diverse energy production portfolio, which includes both a straw boiler, a wood pellet boiler, an absorption cooling plant utilizing biomass heat, a bio-oil boiler and several gas boilers and gas engines. This plant diversity leads to a high degree of fuel flexibility, which leads to a high degree of supply security, which ultimately leads to a very stable energy pricing structure. In addition, Logstor has four accumulation tanks connected to their DH network with a total accumulation capacity of 3,900 m3. This means that the company can manage peak load

3 situations very well and produce energy at an optimum time e.g. in regard to the electricity price. Finally, the company is commencing the construction of a 20,000 m2 solar thermal plant with an accumulation capacity of 5,000 m3 DH. The plant will contribute significantly to the long-term economic stability of the supply company. All the elements listed above are important parts of why Logstor District Heating is a very good example of how to create a sustainable and feasible energy infrastructure. See attached case. Another good case to inspiration for Poland is TVIS DH Transmission Company. They connect seven district heating networks with an 80 km long transmission pipe. The total network supply heat to homes with surplus heat from an oil-refinery, waste incineration plant, CHP plant and excess heat from the Carlsberg brewery. There heat loss in the transmission system is less that 2%! See attached file.

4 Nordre Strandvej 46 DK-8240 Risskov ENERGY SYNERGY The secret for creating a highly efficient and price stable energy infrastructure lays in the creation of synergies between different modes of energy production and different modes of energy utilization. At the heart of this effort, you will find the District Heating (DH) system. The DH system is both a thermal energy distribution network and a thermal energy storage facility and unlike the power grit and natural gas networks the DH network has very low quality demands to the energy that is supplied. It just has to have the right temperature at a given moment in time. This means that it is relatively cheap to supply energy to a DH network and as thermal energy is one of the cheapest forms of energy to produce; you have the opportunity of creating a very feasible energy system. More over modern DH systems are high tech installations and a far cry from the early DH systems, where high transmission losses were common. New DH systems include advanced materials and flow monitoring systems that minimize distribution losses. The establishment of the network entails a substantial investment, but is unrivalled at its potential of utilizing resources that would otherwise have been wasted, creating unique economic opportunities. Additionally the system is also the easiest on which to implement renewable energy production facilities. Logstor District Heating Company A good example of the opportunities entailed in a wellplanned DH system, is the energy supply company Logstor District Heating (Logstor) that has been a client of AAEN A/S for many years. Logstor District Heating Company at night fall The first thing that is noticeable of Logstor is the company s very diverse energy production portfolio, which includes both a straw boiler, a wood pellet boiler, an absorption cooling plant utilizing biomass heat, a bio-oil boiler and several gas boilers and gas engines. This plant diversity leads to a high degree of fuel flexibility, which leads to a high degree of supply security, which ultimately leads to a very stable energy pricing structure. In addition Logstor has four accumulation tanks connected to their DH network with a total accumulation capacity of 3,900 m 3. This means that the company can manage peak load situations very well and produce energy at an optimum time e.g. in regard to the electricity price. Finally the company is commencing the construction of a 20,000 m 2 solar thermal plant with an accumulation capacity of 5,000 m 3 DH. The plant is planned to be finished in 2014 and will contribute significantly to the long term economic stability of the supply company. All the elements listed above are important parts of why we think Logstor is a very good example of how you create a sustainable and feasible energy infrastructure. However, in the end what it all boils down to is smart Strategic Energy Planning. Whether you are a larger or smaller energy supplier or an industrial company you should ask yourself; what are my (clients) energy demands in 5 and 10 years? What possible fuel sources are available to me locally (e.g. wastes)? Which technologies are developing? What is developing in the political environment? Regardless of your question we will be able to assist you. Telephone Fax aaen@aaenas.dk CVR no Page 1 of 2

5 THE ENERGY SYNERGIES IN LOGSTOR Solar Thermal Plant m 2 Solar Thermal Plant The Solar Thermal Plant is under construction outside Vindblaes. When complete the plant will deliver energy to Vindblaes the whole year and to the neighboring towns in the summer time Heating Network The District Heating Networks delivers space heating and domestic hot water to most residents, business and public buildings in the towns, some users in total 4 VINDBLAES Heat Transmission Lines One 7,2 km line to Vindblaes One 8 km line to Ranum The transmission lines delivers heat to the networks in the neighbouring town RANUM Biomass Boiler Plants 1 One new 6,3 (8) MW Straw Boiler One new 6,3 (8) MW Wood Pellet Boiler Delivers the base load for all the networks and the driving energy for the District Cooling plant LOGSTOR District Cooling Plant 2 A new 500 kw District Cooling Plant delivers cooling to the server room the DH pipe manufacture LOGSTOR Booster Pump Central 3 The Pump plant delivers District Heating to the networks in Logstor, Vindblaes and Ranum

6 TVIS DH Transmission - Multicity District Heating homes in Vejle, Fredericia, Middelfart and Kolding are served with surplus heat through the regional heat transmission network TVIS Trekantområdets Varmetransmissionsselskab I/S 1

7 Heat Production and heat Loss % Surplus heat Oil-Refinery 26% Waste to-energy Sceme 17% CHP Plant 55% Carlsberg and local Heat only boilers 2% Total Heat sales in the Region 7050 TJ ~ 1958 GWh Heat loss in TVIS transmission network, 80 km main trace ~ 2% Trekantområdets Varmetransmissionsselskab 2