Kirschstein, Xenia ; Reber, Joscha ; Zeus, Rouven ; Schuster, Miriam ; Bishara, Nadja (2023)
Modelling of Floor Heating and Cooling in Residential Districts.
In: Energies, 2023, 16 (15)
doi: 10.26083/tuprints-00024496
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
In this study, a method is proposed to expand the utilization of an existing calculation model for a floor heat exchanger (HX) from room scale to small district scale. The model, namely Trnsys Type 653, is typically employed for the simulation of single or simultaneously controlled parallel heating circuits. It uses a simplified approach to calculate the heat exchange between fluid and screed, taking the HX effectiveness as an input. In order to calculate the effectiveness based on the HX design, fluid properties and mass flow rate, a Python model is developed to be coupled with Type 653. The results are compared to a reference finite element model set up in COMSOL® and depend on the HX design. The highest deviations range from over 1 K for 35 min to over 2 K for 175 min, while the lowest deviations range from below 0.5 K to below 1 K. Furthermore, the simplification of the floor HX model is analyzed by summarizing heating circuits from single rooms to a whole flat and from single flats to a whole floor. This approach results in deviations of approximately 2 and 4%, respectively, in the overall transferred heat over longer periods of time, while the switch-on frequency of the controller in an exemplary day is halved. While further analysis is required, the described simplifications seem promising for detailed district simulations with relatively low computational effort.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Kirschstein, Xenia ; Reber, Joscha ; Zeus, Rouven ; Schuster, Miriam ; Bishara, Nadja |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Modelling of Floor Heating and Cooling in Residential Districts |
| Sprache: | Englisch |
| Publikationsjahr: | 24 November 2023 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2023 |
| Ort der Erstveröffentlichung: | Basel |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Energies |
| Jahrgang/Volume einer Zeitschrift: | 16 |
| (Heft-)Nummer: | 15 |
| Kollation: | 17 Seiten |
| DOI: | 10.26083/tuprints-00024496 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/24496 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | In this study, a method is proposed to expand the utilization of an existing calculation model for a floor heat exchanger (HX) from room scale to small district scale. The model, namely Trnsys Type 653, is typically employed for the simulation of single or simultaneously controlled parallel heating circuits. It uses a simplified approach to calculate the heat exchange between fluid and screed, taking the HX effectiveness as an input. In order to calculate the effectiveness based on the HX design, fluid properties and mass flow rate, a Python model is developed to be coupled with Type 653. The results are compared to a reference finite element model set up in COMSOL® and depend on the HX design. The highest deviations range from over 1 K for 35 min to over 2 K for 175 min, while the lowest deviations range from below 0.5 K to below 1 K. Furthermore, the simplification of the floor HX model is analyzed by summarizing heating circuits from single rooms to a whole flat and from single flats to a whole floor. This approach results in deviations of approximately 2 and 4%, respectively, in the overall transferred heat over longer periods of time, while the switch-on frequency of the controller in an exemplary day is halved. While further analysis is required, the described simplifications seem promising for detailed district simulations with relatively low computational effort. |
| Freie Schlagworte: | floor heating, floor cooling, radiant floor, HX effectiveness, floor heat exchanger, district modelling, model simplification |
| ID-Nummer: | 5850 |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-244964 |
| Zusätzliche Informationen: | This article belongs to the Section G: Energy and Buildings |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 600 Technik, Medizin, angewandte Wissenschaften > 624 Ingenieurbau und Umwelttechnik |
| Fachbereich(e)/-gebiet(e): | 13 Fachbereich Bau- und Umweltingenieurwissenschaften 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Geotechnik 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut für Statik und Konstruktion |
| Hinterlegungsdatum: | 24 Nov 2023 13:18 |
| Letzte Änderung: | 27 Nov 2023 10:26 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Modelling of Floor Heating and Cooling in Residential Districts. (deposited 24 Nov 2023 13:18) [Gegenwärtig angezeigt]
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