A New Approach for Characterizing Pile Heat Exchangers Using Thermal Response Tests
Pile heat exchangers offer a cost effective route to implementation of ground-source heat pump systems for many large commercial buildings compared with traditional boreholes. Such projects typically use thermal response tests to determine the key input parameters for system design, namely soil ther...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-06-01
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| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/14/12/3375 |
| _version_ | 1797530924355682304 |
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| author | Charles Maragna Fleur Loveridge |
| author_facet | Charles Maragna Fleur Loveridge |
| author_sort | Charles Maragna |
| collection | DOAJ |
| description | Pile heat exchangers offer a cost effective route to implementation of ground-source heat pump systems for many large commercial buildings compared with traditional boreholes. Such projects typically use thermal response tests to determine the key input parameters for system design, namely soil thermal conductivity and heat exchanger thermal resistance. However, this brings challenges for pile heat exchanger based systems, where in situ thermal response tests are known to be less reliable due to the large thermal capacity of the pile. This paper presents a new “black box” resistance capacitive model for applications to pile thermal response tests. The approach is tested against case study data and shown to perform well. Additional test duration savings are shown to be possible if a novel combination of borehole and pile thermal response tests is applied together to determine design parameters. |
| first_indexed | 2024-03-10T10:35:58Z |
| format | Article |
| id | doaj.art-3c508c765ddc4ae783f04c42cba86aaa |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T10:35:58Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-3c508c765ddc4ae783f04c42cba86aaa2023-11-21T23:16:09ZengMDPI AGEnergies1996-10732021-06-011412337510.3390/en14123375A New Approach for Characterizing Pile Heat Exchangers Using Thermal Response TestsCharles Maragna0Fleur Loveridge1BRGM, F-45060 Orléans, FranceSchool of Civil Engineering, Faculty of Engineering and Physical Sciences, University of Leeds, Leeds LS2 9JT, UKPile heat exchangers offer a cost effective route to implementation of ground-source heat pump systems for many large commercial buildings compared with traditional boreholes. Such projects typically use thermal response tests to determine the key input parameters for system design, namely soil thermal conductivity and heat exchanger thermal resistance. However, this brings challenges for pile heat exchanger based systems, where in situ thermal response tests are known to be less reliable due to the large thermal capacity of the pile. This paper presents a new “black box” resistance capacitive model for applications to pile thermal response tests. The approach is tested against case study data and shown to perform well. Additional test duration savings are shown to be possible if a novel combination of borehole and pile thermal response tests is applied together to determine design parameters.https://www.mdpi.com/1996-1073/14/12/3375thermal response testingpile heat exchangerenergy pilesground-source heat pump systems |
| spellingShingle | Charles Maragna Fleur Loveridge A New Approach for Characterizing Pile Heat Exchangers Using Thermal Response Tests Energies thermal response testing pile heat exchanger energy piles ground-source heat pump systems |
| title | A New Approach for Characterizing Pile Heat Exchangers Using Thermal Response Tests |
| title_full | A New Approach for Characterizing Pile Heat Exchangers Using Thermal Response Tests |
| title_fullStr | A New Approach for Characterizing Pile Heat Exchangers Using Thermal Response Tests |
| title_full_unstemmed | A New Approach for Characterizing Pile Heat Exchangers Using Thermal Response Tests |
| title_short | A New Approach for Characterizing Pile Heat Exchangers Using Thermal Response Tests |
| title_sort | new approach for characterizing pile heat exchangers using thermal response tests |
| topic | thermal response testing pile heat exchanger energy piles ground-source heat pump systems |
| url | https://www.mdpi.com/1996-1073/14/12/3375 |
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