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District Heating and Cooling

Annex XIII Project 02

The Research / IEA DHC Annexes / 2020-2023 / Annex XIII / Annex XIII Project 02

MEMPHIS 2.0: Advanced algorithm for spatial identification, evaluation of temporal availability and economic assessment of waste heat sources and their local representation

Visualization of techno-economic waste heat potential based on variable parameters

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Project summary

The integration of waste heat into district heating networks (DHN) is a key measure towards decarbonisation; DHN can act as a buffer between supply and demand as well as a thermal bus. However, one challenge is the extensive identification and evaluation of available waste heat sources on local scale, including waste heat from industry, service sectors and sewage systems.

In ANNEX XII the project “MEMPHIS” was completed successfully. Within “MEMPHIS” a methodology was developed to access information about waste heat from industrial and service sectors as well as sewage networks by using publicly available open data. The methodology localizes the potentials with spatial resolution. Within the project an online evaluation tool called Waste Heat Explorer (WHE, see Figure 1) was developed which visualises existing results and offers the possibility to enter further waste heat potentials of companies online.

“MEMPHIS” was complemented by an evaluation of relevant policy and regulatory issues of relevance to low-grade waste heat recovery. A market maturity assessment is also
presented which considers key policy / legislation, technical and commercial maturity. The previous project was focusing on the three example countries Austria, Germany and the United Kingdom.

The “MEMPHIS 2.0” project builds upon previous research from the project partners and other researchers in the DH sector as well as upon “MEMPHIS” project and focusses on the potential and feasibility of supplying urban areas with lowgrade waste heat.

Target groups

  • National heat policy makers
  • Local authorities
  • City planners and developers
  • District heating operators
  • Waste heat emitters
  • Potential consumers
  • Decision makers 

Deliverables / Outcomes

  • An improved MEMPHIS algorithm that includes time relations to the heat emitted.
  • A technically meaningful design of the heat recovery system to integrate low-grade waste heat into DHNs
  • An assessment of the business potential of the previous designed waste heat recovery system
  • A techno-economic waste heat potential evaluation and their visualisation
  • Additionally, prospective waste heat sources are added to the Waste Heat Explorer and the potential based on variable parameters
  • Key figures for the development of realistic market regulations
  • Expanding the WHE to further cities in IEA member states

Project lead

University of Applied Sciences and Arts Hildesheim /
Holzminden / Göttingen (HAWK)

Rudolf-Diesel-Straße 12
37077 Göttingen

Johannes Pelda, MEng
+49 551 / 5032 – 185

Partner Organizations

  • Austrian Institute of Technology, AIT, Austria
  • EURAC Research (EURAC), Institute for Renewable Energy, Italy