District heating and cooling

District heating and cooling (DHC) is an integrative technology that can make significant contributions to reducing carbon dioxide emissions and air pollution while increasing energy security. A district heating network is a system that supplies the heat generated in a centralized plant to meet residential and commercial space and water heating requirements. A district heating scheme comprises a network of insulated pipes used to deliver heat, in the form of hot water or steam, from the point of generation to the end user.

District heating networks transport heat efficiently. Currently, they can be built in a distance of up to around 30 km from a generating plant and the distribution networks themselves can be hundreds of kilometres long. This is sufficient to distribute heat across cities, smaller communities and industrial areas. A network can easily be extended by simply adding more heat sources along the way. With respect to cooling, the DHC concept is implemented either through the distribution of chilled water or by using the district heating network to deliver heat for individual heat-driven chillers. DHC networks can distribute energy from various sources and integrate large scale storage while enabling the connection of several users, especially new buildings and refurbished buildings, with a decrease in the energy consumption of the district. 

List of projects where this technology is being implemented.

CITyFiED

The CITyFiED project aims to develop a replicable, systemic and integrated strategy to adapt European cities and urban ecosystems into the smart city of the future, focusing on reducing the energy demand and GHG emissions and increasing the use of renewable energy sources by developing and...

CITY-ZEN

CITY-ZEN aims to develop and demonstrate zero energy cities with a central role for citizens. The team of the project works together to achieve a future-proof grid, innovative heat and cold solutions and energy efficient buildings.

CELSIUS

To increase energy efficiency in EU, CELSIUS helps cities across Europe to develop secure, affordable and low carbon district heating and cooling solutions that form part of the city's wider energy system. The focus is on maximising the use of waste heat or secondary heat within a city by capturing...

BEEM-UP

BEEM-UP aimed to demonstrate the economic, social and technical feasibility of retrofitting initiatives, drastically reducing energy consumption in existing buildings, and paving the way towards massive market uptake. BEEM-UP involved building owners at three sites in France, Sweden and the...

SOLUTION

The SOLUTION project mobilised public/private resources to build showcases of energy self-sufficient communities in Austria, Croatia, Finland and Switzerland (together with an associated Slovenian community) with a strong potential for replication throughout Europe. SOLUTION was designed to respond...
List of demo sites where this technology is being implemented.

CELSIUS Site Gothenburg

In Gothenburg a large amount of waste heat, from both waste incineration and industries, is used in the district heating system. There is also heat pumps taking care of the heat in sewage and plants using bio fuels such as wood pellets, wood chips and bio oil. There is also a district cooling ...

CELSIUS Site London

To supply new heat users​ , the existing Bunhill Heat and Power Network in London will be extended to utilise existing sources of waste heat and to explore the opportunities for the system to utilise a lower operating temperature. This demonstrator will develop knowledge and expertise of how to...

CELSIUS Site Rotterdam

As part of the CELSIUS project a 160,000 m2 mixed use building integrated energy system will be demonstrated in Rotterdam. A high-temperature hot water heat distribution system supplies water to all functions needed (residential and hotel). Through a low-temperature heating system, heat is supplied...

PITAGORAS Site Brescia

The demonstration plant in Brescia includes medium/high temperature waste heat recovery (≈600ºC) from a steel foundry and ORC unit (2,1 MWe) for heat and power generation. It will be connected to the existing city district heating network. *Disclaimer: There is not sufficient information available...

EU-GUGLE Site Aachen

The City of Aachen has 248.000 inhabitants and is situated at the western border of Germany to Belgium and the Netherlands. It is a very important place for science and education with more than 50.000 students in total. The district Aachen-North is a heterogeneous area with a mixture of recent and...