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Low energy houses in Windsbach (Germany)

The municipality of Windsbach has planned a new residential housing project, heated by district
heating (DH). In total approximately 100 low energy consumption houses are planned. The total heat demand is estimated with 1000 MWh. The
peak load will be about 800 kW. The aim is to supply as many houses as possible with the provided
district heating. The complete heat is produced with renewable energy. Therefore biogas CHPs and
one peak load biogas boiler are installed.

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Realizing a CO2-free district heating network in odense

Odense wants to phase out the remaining 30% coal consumption in the heat
production for the district heating network by 2025. In 2018, the coal consumption was already reduced from ~900.000 t/y in 2010 to 2-300.000 t/y but the goal is to substitute this completely. To realize this purpose, electric heat pumps, large heat storages, biomass boilers, and electric boilers are constructed. The challenge is
to carry this out without price increases for the consumers, especially the greenhouse industry where
heat price is an important competition faction.

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Utilization of seawater as a heat source

Drammen wished to upgrade their existing district heating which was a mixture of electric, biomass
and gas/oil. They recognised the need to move from fossil and combustion fuels and so decided to
utilize seawater as a heat source for an industrial heat pump. Also recognizing the danger of
HydroFluoroCarbons (HFCs) and other synthetic working fluids they began to explore the use of
ammonia.

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Geothermal heat sources for the DH System of Ferrara

The network in Ferrara has already achieved significant results, but represents a perfect field to test advanced improvement strategies. As of 2014 the network is 56 km long, with 591 users’ substations, delivering approximately 143 GWht/a. The energy mix is a combination of geothermal source (14 MWt), WTE (30 MWt) and gas boilers, including a significant storage system (1,200 m3). The average temperature levels are 90°C on the supply line and 60°C on the return line.

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Upgrading the performance of Sisak’s District Heating Networks

The target city of the Upgrade DH project in Croatia is the city of Sisak. It is a middle sized city located in the Sisak – Moslavina County, southeast from the Croatian capital, Zagreb. The city is the administrative, cultural and historical center of the county, as well as one of Croatia’s biggest river ports and industrial cities. Total number of inhabitants is 47,768, as stated in the 2011 population census. Out of this number, 33,322 inhabitants live in the urban settlement.

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Upgrading the performance of Middelfart’s District Heating Networks

The city Middelfart is located on Funen in the South-Region of Denmark, with around 15.246 inhabitants. Middelfart District Heating System is divided into two areas (Hessgade and Fynsgade), and are organizationally in charge of both Middelfart District Heating Area, but also Nørre Åby District Heating Area. Middelfart DH does not supply Nørre Åby, since they have their own local energy system, meaning Middelfart DH only supplies the city of Middelfart.

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Upgrading the performance of Tuzla’s District Heating Networks

The city of Tuzla is placed in North-East part of the country, with around 170,000 inhabitants. The DH system is based on cogeneration (CHP) in Tuzla’s coal-based power plant (Tuzla TPP)operated by EPBiH power utility. Tuzla TPP is the supplier of heat to both Tuzla City (220 MWth) and Lukavac city (50 MWth). In the near future, the town of Živinice is planned to be supplied with a thermal power of 70 MWth.

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District Heating Network Kortrijk

The City of Kortrijk installed a pilot heatnet at Kortrijk Weide, as a nucleus for further extensions in the city. The feasibility to install a heatnet backbone from the waste incinerator at the outskirts of the city, along the River Leie, to the city center was researched. As many building projects are taking place along the river, this would create the opportunity to connect over 1,000 households.

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