Formhals, Julian ; Kirschstein, Xenia ; Dahash, Abdulrahman ; Seib, Lukas ; Sass, Ingo (2024)
Development, validation and demonstration of a new Modelica pit thermal energy storage model for system simulation and optimization.
In: Geothermal Energy, 2024, 12
doi: 10.26083/tuprints-00027735
Artikel, Zweitveröffentlichung, Verlagsversion
 | Es ist eine neuere Version dieses Eintrags verfügbar. |
Kurzbeschreibung (Abstract)
Space heating applications account for a high share of global greenhouse gas emissions. To increase the renewable share of heat generation, seasonal thermal energy storage (STES) can be used to make thermal energy from fluctuating renewable sources available in times of high demand. A popular STES technology is pit thermal energy storage (PTES), where heat is stored underground, using water as a storage medium. To evaluate the use of PTES in an energy system, easily adaptable, publicly accessible and tool independent models are needed. In this paper, we improve an existing PTES model developed in the Modelica modeling language. The model is cross-compared with a more detailed and previously validated COMSOL model, considering different amounts of insulation, showing a deviation of 2–13% in the observed annual charged and discharged amount of heat. The results indicate that the presented model is well suited for early design stage and an exemplary case study is performed to demonstrate its applicability in a system context. Dimensions of system components are optimized for the levelized cost of heat (LCOH), both with and without subsidies, highlighting the importance of subsidies for the transition towards climate friendly heating solutions, as the gas boiler use is reduced from 47.6% to 2.7%.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Formhals, Julian ; Kirschstein, Xenia ; Dahash, Abdulrahman ; Seib, Lukas ; Sass, Ingo |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Development, validation and demonstration of a new Modelica pit thermal energy storage model for system simulation and optimization |
| Sprache: | Englisch |
| Publikationsjahr: | 7 August 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 24 Juni 2024 |
| Ort der Erstveröffentlichung: | Berlin |
| Verlag: | SpringerOpen |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Geothermal Energy |
| Jahrgang/Volume einer Zeitschrift: | 12 |
| DOI: | 10.26083/tuprints-00027735 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/27735 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung |
| Kurzbeschreibung (Abstract): | Space heating applications account for a high share of global greenhouse gas emissions. To increase the renewable share of heat generation, seasonal thermal energy storage (STES) can be used to make thermal energy from fluctuating renewable sources available in times of high demand. A popular STES technology is pit thermal energy storage (PTES), where heat is stored underground, using water as a storage medium. To evaluate the use of PTES in an energy system, easily adaptable, publicly accessible and tool independent models are needed. In this paper, we improve an existing PTES model developed in the Modelica modeling language. The model is cross-compared with a more detailed and previously validated COMSOL model, considering different amounts of insulation, showing a deviation of 2–13% in the observed annual charged and discharged amount of heat. The results indicate that the presented model is well suited for early design stage and an exemplary case study is performed to demonstrate its applicability in a system context. Dimensions of system components are optimized for the levelized cost of heat (LCOH), both with and without subsidies, highlighting the importance of subsidies for the transition towards climate friendly heating solutions, as the gas boiler use is reduced from 47.6% to 2.7%. |
| Freie Schlagworte: | Pit thermal energy storage, Solar district heating, Modelica, Model validation, System simulation, Planning optimization |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-277358 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften 600 Technik, Medizin, angewandte Wissenschaften > 624 Ingenieurbau und Umwelttechnik |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften > Fachgebiet Angewandte Geothermie 13 Fachbereich Bau- und Umweltingenieurwissenschaften 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Statik und Konstruktion |
| Hinterlegungsdatum: | 07 Aug 2024 12:17 |
| Letzte Änderung: | 08 Aug 2024 05:06 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
- Development, validation and demonstration of a new Modelica pit thermal energy storage model for system simulation and optimization. (deposited 07 Aug 2024 12:17) [Gegenwärtig angezeigt]
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum