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Improving the operation of a district heating and a district cooling network

Oltmanns, Johannes Julius ; Freystein, Martin ; Dammel, Frank ; Stephan, Peter (2022)
Improving the operation of a district heating and a district cooling network.
In: Energy Procedia, 2022, 149
doi: 10.26083/tuprints-00023021
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Improving the operation of a district heating and a district cooling network
Language: English
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 2022
Publisher: Elsevier
Journal or Publication Title: Energy Procedia
Volume of the journal: 149
DOI: 10.26083/tuprints-00023021
URL / URN: https://doi.org/10.1016/j.egypro.2018.08.218
Corresponding Links:
Origin: Secondary publication

Ongoing research activities at TU Darmstadt aim at improving the energy efficiency of its Campus “Lichtwiese”. In accordance with the national climate protection goals, CO2 emissions shall be reduced by 80 percent until 2050 compared to the level of 1990. The district heating and cooling networks and the combined heat and power (CHP) generation play a key role in the university’s energy efficiency strategy. The following components for future development are represented in a thermal model of the campus: (1) The cooling supply is switched from compression to absorption chillers supplied with CHP heat, in order to increase the operating time of the CHP plants, especially in the summer. (2) Thermal energy storage along with a predictive control algorithm for the operation of the energy system is implemented to increase the flexibility of the energy supply. This approach also allows to increase the operating time of the CHP plants. (3) The district heating network temperatures, currently depending solely on ambient temperatures, can be reduced considering the heat supply temperature inside the buildings. Thereby, the efficiency of the heat distribution is increased and alternative heat sources can be integrated more easily in the future.

Uncontrolled Keywords: District heating operation improvement; combined heat and power; heat demand forecast; thermal energy storage; network temperature reduction
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-230217
Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 16 Department of Mechanical Engineering > Institute for Technical Thermodynamics (TTD)
Date Deposited: 19 Dec 2022 09:39
Last Modified: 02 Jan 2023 14:03
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/23021
PPN: 503192309
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