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.

STORM Site Heerlen

In the STORM demonstration site in Heerlen, flooded mine galleries act as a renewable heat source and provide a total of 500,000 m² floor area connected to a low temperature district heating and cooling network. The Heerlen system, operated by Mijnwater BV, consists of two hot wells in the northern...

OPTi Site Palma de Mallorca

Son Llatzer is a hospital situated in Palma de Mallorca (Balearic Islands, Spain) that gives public health assistance to more than 200.000 patients per year with a staff of more than 1500 people. In 2011 in the surrounding area of Son Llàtzer a tri-generation plant for electricity was installed to...

OPTi Site Lulea

The district heating and cooling (DHC) system in Luleå (Sweden) supplies 31,000 households with heating and cooling on a daily basis. The heat is manly produced at a CHP plant close to the city center. It supplies the base heat production of 185 MW to the grid and gets the fuel (e.g. flue gas) from...

CELSIUS Site Cologne

In order to create a district-wide energy network in Cologne, Active Network Management (ANM) integrates decentralised energy generation and district heating systems with the electricity distribution network. The objective of the ANM scheme is to inform the models that are used to assess if...

CELSIUS Site Genoa

Genoa Municipality’s objectives include education and solidarity, quality of life, energy efficiency strategies, economy and employment, communication and promotion of the city, port and infrastructure, city management improvement. The Municipality of Genoa is one of the first cities in Italy to...