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.

READY

The READY project aims to demonstrate how the demand of energy and particularly the needs for fossil fuels and release of CO2 can be considerably reduced to nearly zero, and show a sustainable way to go for other European cities. Demonstration is taking place in two cities: Aarhus (Denmark), which...

NEXT-BUILDINGS

The NEXT-Buildings project focuses on low energy buildings also called active houses, which are not only buildings, but active components in the overall integrated energy systems. The target is to demonstrate affordable solutions for social housing and revitalisation of town areas. The solutions...

GrowSmarter

GrowSmarter aims to stimulate city uptake of smart solutions by using the three Lighthouse cities Stockholm (Sweden), Cologne (Germany) and Barcelona (Spain) as a way to showcase 12 Smart City solutions: from advanced information and communication technology and better connected urban mobility, to...

EU-GUGLE

The EU-GUGLE project aims to demonstrate the feasibility of nearly-zero energy building renovation models in view of triggering large-scale, Europe-wide replication in smart cities and communities by 2020.  To reach this objective, the eight pilot cities will join efforts to combine the latest...

DIRECTION

DIRECTION aimed at demonstrating how the use of very innovative and cost-effective energy efficiency technologies can lead to the achievement of very low energy new buildings. This aim along with the effective adoption of low energy buildings was achieved by switching to a model whereby energy...
List of demo sites where this technology is being implemented.

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...

EU-GUGLE Site Bratislava

Bratislava is the capital of Slovakia and the country’s largest city with a population of about 420,000. Bratislava is the political, cultural, and economic centre of Slovakia. Its area is 36 759 ha. The population density is 1,161 inhabitants per km2 (2007). Located in the south-western Slovakia,...