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How Much Excess Heat Might Be Used in Buildings? A Spatial Analysis at the Municipal Level in Germany

Fritz, Markus ; Aydemir, Ali ; Schebek, Liselotte (2022)
How Much Excess Heat Might Be Used in Buildings? A Spatial Analysis at the Municipal Level in Germany.
In: Energies, 2022, 15 (17)
doi: 10.26083/tuprints-00022318
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: How Much Excess Heat Might Be Used in Buildings? A Spatial Analysis at the Municipal Level in Germany
Language: English
Date: 14 September 2022
Place of Publication: Darmstadt
Year of primary publication: 2022
Publisher: MDPI
Journal or Publication Title: Energies
Volume of the journal: 15
Issue Number: 17
Collation: 17 Seiten
DOI: 10.26083/tuprints-00022318
Corresponding Links:
Origin: Secondary publication DeepGreen

Excess heat can make an important contribution to reduce greenhouse gas emissions in the heating and cooling sector. Due to the local character of heat, the local excess heat potential is decisive for using excess heat. However, the spatially distributed potential and the subdivision of the potential into different subsectors have not been sufficiently investigated in Germany. Here we analyse the excess heat potential in Germany according to different subsectors and spatially distributed to the municipal level. We use data of more than 115,000 records on exhaust gas and fuel input from over 11,000 industrial sites. We calculate the site-specific excess heat potential and check its plausibility using the fuel input of the respective industrial sites. Finally, we compare the excess heat potential with the residential heat demand at the municipal level. Our results show that the excess heat potential in Germany is about 36.6 TWh/a, and that in 148 municipalities, the annual excess heat potential is greater than 50% of the annual heat demand. In conclusion, there is a large potential for excess heat utilisation in Germany. In some regions, more excess heat is available throughout the year than is needed to provide space heat and hot water.

Uncontrolled Keywords: waste heat, excess heat, spatial analysis, industrial energy demand, heat demand, industrial subsectors
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-223185
Additional Information:

This article belongs to the Section A: Sustainable Energy

Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 13 Department of Civil and Environmental Engineering Sciences > Institute IWAR > Material Flow Management and Resource Economy
Date Deposited: 14 Sep 2022 12:11
Last Modified: 14 Nov 2023 19:05
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/22318
PPN: 499600053
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