Titelangaben
Kutzner, Sebastian ; Heberle, Florian ; Brüggemann, Dieter:
Thermo-Economic Analysis of Near-Surface Geothermal Energy Considering Heat and Cold Supply within a Low-Temperature District Heating Network.
In: Processes.
Bd. 10
(2022)
Heft 2
.
- 421.
ISSN 2227-9717
DOI: https://doi.org/10.3390/pr10020421
Angaben zu Projekten
Projekttitel: |
Offizieller Projekttitel Projekt-ID Open Access Publizieren Ohne Angabe |
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Projektfinanzierung: |
Deutsche Forschungsgemeinschaft |
Abstract
This study evaluates low-temperature district heating (LTDH) networks with different geothermal heat sources under thermo-economic criteria. In particular, the heat and cold supply of modern neighbourhoods are taken into account in a dynamic simulation model built on the modelling language Modelica. Both horizontal and vertical ground heat exchangers (GHE) were investigated in respect to the load profiles of the consumers, depending on dimension as well as location. The selected base case represents a LTDH network near Stuttgart (Germany). The corresponding results of an annual simulation show that a horizontal GHE is suitable for pure heat supply and can reduce costs by up to 12% compared to a vertical system. This economic advantage remains when the cooling demand is considered. Subsequently, a variation of the system location was carried out. It is shown that horizontal GHEs operate more economically in northern regions, whereas vertical ones are more advantageous in regions with increased cooling demand. For both cases, possible savings of between 3.0% and 4.2% resulted from the simulations. The heating-to-cooling demand ratio was used as a first decision criteria to weigh-up between the two systems. Vertical GHEs were more economical than horizontal systems as soon as the ratio dropped below 1.5.
Weitere Angaben
Publikationsform: | Artikel in einer Zeitschrift |
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Begutachteter Beitrag: | Ja |
Keywords: | low-temperature district heating; near-surface geothermal energy; decentral heat pumps; thermo-economic analysis; transient simulation; geothermal heating and cooling |
Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Technische Thermodynamik und Transportprozesse Profilfelder > Emerging Fields > Energieforschung und Energietechnologie Forschungseinrichtungen > Forschungsstellen > Zentrum für Energietechnik - ZET Fakultäten Fakultäten > Fakultät für Ingenieurwissenschaften Profilfelder Profilfelder > Emerging Fields Forschungseinrichtungen Forschungseinrichtungen > Forschungsstellen |
Titel an der UBT entstanden: | Ja |
Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
Eingestellt am: | 24 Feb 2022 08:19 |
Letzte Änderung: | 23 Aug 2023 13:29 |
URI: | https://eref.uni-bayreuth.de/id/eprint/68746 |