Simplified Modeling and Experimental Validation of a Combi-Storage Distribution Tank for Seasonal Thermal Energy Storage Systems
This study regards the evaluation of the performance of a thermally stratified tank as an intermediate combi-storage tank for a solar-driven residential thermal system coupled to a seasonal energy storage system. In such applications, the efficient operation of this intermediate tank is crucial to t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Thermo |
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| Online Access: | https://www.mdpi.com/2673-7264/3/4/38 |
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| author | Tryfon C. Roumpedakis Aris-Dimitrios Leontaritis Prokopios Vlachogiannis Efstratios Varvagiannis Antonios Charalampidis Sotirios Karellas |
| author_facet | Tryfon C. Roumpedakis Aris-Dimitrios Leontaritis Prokopios Vlachogiannis Efstratios Varvagiannis Antonios Charalampidis Sotirios Karellas |
| author_sort | Tryfon C. Roumpedakis |
| collection | DOAJ |
| description | This study regards the evaluation of the performance of a thermally stratified tank as an intermediate combi-storage tank for a solar-driven residential thermal system coupled to a seasonal energy storage system. In such applications, the efficient operation of this intermediate tank is crucial to the enhanced exploitation of the harvested solar energy and the minimization of heat losses. In this perspective, the development of a dedicated model in TRNSYS software and its validation with experimental results are investigated. With respect to the simulation model’s discretization, it was found that beyond 60 nodes, the benefits to the model’s accuracy are almost negligible. Comparing the experimental data with the simulation’s results, the predicted temperature profile converges accurately to the measured values under steady-state conditions (threshold stabilization period of 1000 s after charging/discharging has occurred). However, the response of the model deviates considerably under transient conditions due to the lack of detailed inertia modeling of both the tank and the rest of the system components. Conclusively, the developed 1D simulation model is adequate for on- and off-design models where transient phenomena are of reduced importance, whereas for dynamic and semi-dynamic simulations, more detailed models are needed. |
| first_indexed | 2024-03-08T20:18:56Z |
| format | Article |
| id | doaj.art-3bb11e8d3d504a2eb1b09798ad7b10a5 |
| institution | Directory Open Access Journal |
| issn | 2673-7264 |
| language | English |
| last_indexed | 2024-03-08T20:18:56Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Thermo |
| spelling | doaj.art-3bb11e8d3d504a2eb1b09798ad7b10a52023-12-22T14:45:48ZengMDPI AGThermo2673-72642023-11-013465768110.3390/thermo3040038Simplified Modeling and Experimental Validation of a Combi-Storage Distribution Tank for Seasonal Thermal Energy Storage SystemsTryfon C. Roumpedakis0Aris-Dimitrios Leontaritis1Prokopios Vlachogiannis2Efstratios Varvagiannis3Antonios Charalampidis4Sotirios Karellas5Laboratory of Steam Boilers and Thermal Plants, Section of Thermal Engineering, School of Mechanical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, 15780 Zografos, GreeceLaboratory of Steam Boilers and Thermal Plants, Section of Thermal Engineering, School of Mechanical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, 15780 Zografos, GreeceLaboratory of Steam Boilers and Thermal Plants, Section of Thermal Engineering, School of Mechanical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, 15780 Zografos, GreeceLaboratory of Steam Boilers and Thermal Plants, Section of Thermal Engineering, School of Mechanical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, 15780 Zografos, GreeceLaboratory of Steam Boilers and Thermal Plants, Section of Thermal Engineering, School of Mechanical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, 15780 Zografos, GreeceLaboratory of Steam Boilers and Thermal Plants, Section of Thermal Engineering, School of Mechanical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, 15780 Zografos, GreeceThis study regards the evaluation of the performance of a thermally stratified tank as an intermediate combi-storage tank for a solar-driven residential thermal system coupled to a seasonal energy storage system. In such applications, the efficient operation of this intermediate tank is crucial to the enhanced exploitation of the harvested solar energy and the minimization of heat losses. In this perspective, the development of a dedicated model in TRNSYS software and its validation with experimental results are investigated. With respect to the simulation model’s discretization, it was found that beyond 60 nodes, the benefits to the model’s accuracy are almost negligible. Comparing the experimental data with the simulation’s results, the predicted temperature profile converges accurately to the measured values under steady-state conditions (threshold stabilization period of 1000 s after charging/discharging has occurred). However, the response of the model deviates considerably under transient conditions due to the lack of detailed inertia modeling of both the tank and the rest of the system components. Conclusively, the developed 1D simulation model is adequate for on- and off-design models where transient phenomena are of reduced importance, whereas for dynamic and semi-dynamic simulations, more detailed models are needed.https://www.mdpi.com/2673-7264/3/4/38thermal energy storagesensible heatseasonal thermal energy storageTRNSYS |
| spellingShingle | Tryfon C. Roumpedakis Aris-Dimitrios Leontaritis Prokopios Vlachogiannis Efstratios Varvagiannis Antonios Charalampidis Sotirios Karellas Simplified Modeling and Experimental Validation of a Combi-Storage Distribution Tank for Seasonal Thermal Energy Storage Systems Thermo thermal energy storage sensible heat seasonal thermal energy storage TRNSYS |
| title | Simplified Modeling and Experimental Validation of a Combi-Storage Distribution Tank for Seasonal Thermal Energy Storage Systems |
| title_full | Simplified Modeling and Experimental Validation of a Combi-Storage Distribution Tank for Seasonal Thermal Energy Storage Systems |
| title_fullStr | Simplified Modeling and Experimental Validation of a Combi-Storage Distribution Tank for Seasonal Thermal Energy Storage Systems |
| title_full_unstemmed | Simplified Modeling and Experimental Validation of a Combi-Storage Distribution Tank for Seasonal Thermal Energy Storage Systems |
| title_short | Simplified Modeling and Experimental Validation of a Combi-Storage Distribution Tank for Seasonal Thermal Energy Storage Systems |
| title_sort | simplified modeling and experimental validation of a combi storage distribution tank for seasonal thermal energy storage systems |
| topic | thermal energy storage sensible heat seasonal thermal energy storage TRNSYS |
| url | https://www.mdpi.com/2673-7264/3/4/38 |
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