Upgrade of the B2G dynamic geothermal heat exchanger model: optimal location of the ground nodes
| Autor: | José M. Corberán, Antonio Cazorla-Marín, Francesco Tinti, Sara Focaccia, C. Montagud |
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| Přispěvatelé: | Cazorla-Marín, Antonio, Montagud, Carla, Corberán, José M., Tinti, Francesco, Focaccia, Sara |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Geothermal heat exchanger
Horizon (archaeology) European community 020209 energy European research 020302 automobile design & engineering 02 engineering and technology 7. Clean energy Civil engineering Geothermal heat exchanger numerical modelling penetration diameters Upgrade 0203 mechanical engineering Work (electrical) 13. Climate action MAQUINAS Y MOTORES TERMICOS 0202 electrical engineering electronic engineering information engineering Environmental science TERMODINAMICA APLICADA (UPV) Geothermal gradient |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname Proceedings of the IGSHPA Research Track 2018 |
| DOI: | 10.22488/okstate.18.000013 |
| Popis: | In order to optimize the design and operation of a ground source heat pump system, the modeling of the Borehole Heat Exchanger (BHE) and its coupling to the heat pump operation becomes crucial. This becomes key for those systems with on/off operation, where it is important to model the short-term response of the BHE accurately. Furthermore, the modeling of the local variation of the ground temperature near the BHE will be highly influenced by ground thermal properties and the operation of the system. In this context, the novel B2G dynamic model was developed and experimentally validated in previous works for a single U BHE and adapted to a novel coaxial spiral configuration. In order to consider the influence of the soil surrounding the BHE, two ground nodes were initially defined and their position (penetration radii) was calculated for a specific type of soil and operating conditions. This paper presents an upgrade of the B2G model, with a descripton of penetration radii calculation. For this purpose, a comparison between the B2G model and the Infinite Cylindrical Source model was carried out to find the penetration radii that reproduce the ground thermal response with a higher accuracy under the corresponding soil thermal properties and operating conditions. The present work has been supported by the European Community Horizon 2020 Program for European Research and Technological Development (2014-2020) inside the framework of the project 656889 – GEOTeCH (Geothermal Technology for Economic Cooling and Heating) and by the Generalitat Valenciana inside the program “Ayudas para la contratación de personal investigador en formación de carácter predoctoral (ACIF/2016/131)” |
| Databáze: | OpenAIRE |
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