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Optimisation of heating and cooling networks

EnEff:Wärme promotes specific network optimisation with the aim of further increasing the share of local and district heating and integrating less densely populated areas into the supply network. This could be the future of central heat supply systems. District heating networks, so-called smart grids, are to become central building blocks in local energy management. Low-exergy technologies (LowEx) help reduce transmission losses. Furthermore, new adaptive cooling and heating networks offer starting points for the integration of renewable energy.

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Graphic: In LowEx heating networks, consumers can be producers at the same time.
Projektstatus: Phase 2
EnEff:Wärme - Forschung für energieeffiziente Wärme- und Kältenetze

LowExTra – Low-exergy transmission pipes for storing and distributing heat

In Germany, about half of the final energy is used for generating heat. This means that new concepts for supplying heat more efficiently need to be developed if the Energiewende – Germany’s energy transition – is to be successfully implemented. The LowExTra research project is therefore investigating and developing an innovative and intelligent multi-line network for supplying heat at the district level.

Projektstatus: Phase 1
EnEff:Wärme - Forschung für energieeffiziente Wärme- und Kältenetze

Thermal storage systems for improved flexibility of CHP plants

The development of the energy sector during the last decade was shaped by the liberalisation of markets and a steady rise in the share of renewable energy sources in electricity generation. The research project aims to identify benefits of thermal storage systems as extensions of district heating systems for various technical and economic framework conditions.

Aerial view of Neckarpark Stuttgart
Projektstatus: Phase 1
EnEff:Wärme - Forschung für energieeffiziente Wärme- und Kältenetze

New “Neckarpark Stuttgart” urban district: Local heating and cooling energy from waste water

A new urban district with highly energy-efficient buildings is being created on a 22-hectare derelict site. The main energy source for supplying heat and cooling will be waste water, whose energy will be utilised via a low-temperature local heating network by deploying heat exchangers and cascaded heat pumps.

Functional model of a combined house connection and grid feed-in station (HANEST)
Projektstatus: Phase 3
EnEff:Wärme - Forschung für energieeffiziente Wärme- und Kältenetze

Decentralised feed into local and district heating networks – using the example of solar thermal energy

The multifunctional use of district and local heating networks could already make a notable contribution to realising low-emission heat supplies in the short to medium term. For this purpose, the research project is investigating the technical and ecological effects of decentralised feed in using coupled simulations. The requirements for system components will then be defined and innovative technologies and system solutions developed.

Projektstatus: Phase 1
EnEff:Wärme - Forschung für energieeffiziente Wärme- und Kältenetze

Exergetic optimisation of the district heating supply in Ulm

In order to optimise the district heating supply in Ulm in exergetic terms when converting the steam network to hot water operation, the effects of reducing the return temperature were examined. This changes, for example, the technical requirements for space and hot water heating systems.