Comparison of Four Methods for Borehole Heat Exchanger Sizing Subject to Thermal Response Test Parameter Estimation
The impact of different parameter estimation results on the design length of a borehole heat exchanger has received very little attention. This paper provides an in-depth investigation of this problem, together with a full presentation of six data interpretation models and a comprehensive comparison...
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| Format: | Article |
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MDPI AG
2019-10-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/21/4067 |
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| author | Xuedan Zhang Tiantian Zhang Bingxi Li Yiqiang Jiang |
| author_facet | Xuedan Zhang Tiantian Zhang Bingxi Li Yiqiang Jiang |
| author_sort | Xuedan Zhang |
| collection | DOAJ |
| description | The impact of different parameter estimation results on the design length of a borehole heat exchanger has received very little attention. This paper provides an in-depth investigation of this problem, together with a full presentation of six data interpretation models and a comprehensive comparison of four representative sizing methods and their inter models. Six heat transfer models were employed to interpret the same thermal response test data set. It was found that the estimated parameters varied with the data interpretation model. The relative difference in borehole thermal resistance reached 34.4%, and this value was 11.9% for soil thermal conductivity. The resulting parameter estimation results were used to simulate mean fluid temperature for a single borehole and then to determine the borehole length for a large bore field. The variations in these two correlated parameters caused about 15% and 5% relative difference in mean fluid temperature in the beginning and at the end of the simulation period, respectively. For computing the borehole design length, software-based methods were more sensitive to the influence of parameter estimation results than simple equation-based methods. It is expected that these comparisons will be beneficial to anyone involved in the design of ground-coupled heat pump systems. |
| first_indexed | 2024-04-11T11:53:02Z |
| format | Article |
| id | doaj.art-63cdb0b07f6443a69d0bc6993ad13a8e |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T11:53:02Z |
| publishDate | 2019-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-63cdb0b07f6443a69d0bc6993ad13a8e2022-12-22T04:25:16ZengMDPI AGEnergies1996-10732019-10-011221406710.3390/en12214067en12214067Comparison of Four Methods for Borehole Heat Exchanger Sizing Subject to Thermal Response Test Parameter EstimationXuedan Zhang0Tiantian Zhang1Bingxi Li2Yiqiang Jiang3School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Architecture, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Architecture, Harbin Institute of Technology, Harbin 150001, ChinaThe impact of different parameter estimation results on the design length of a borehole heat exchanger has received very little attention. This paper provides an in-depth investigation of this problem, together with a full presentation of six data interpretation models and a comprehensive comparison of four representative sizing methods and their inter models. Six heat transfer models were employed to interpret the same thermal response test data set. It was found that the estimated parameters varied with the data interpretation model. The relative difference in borehole thermal resistance reached 34.4%, and this value was 11.9% for soil thermal conductivity. The resulting parameter estimation results were used to simulate mean fluid temperature for a single borehole and then to determine the borehole length for a large bore field. The variations in these two correlated parameters caused about 15% and 5% relative difference in mean fluid temperature in the beginning and at the end of the simulation period, respectively. For computing the borehole design length, software-based methods were more sensitive to the influence of parameter estimation results than simple equation-based methods. It is expected that these comparisons will be beneficial to anyone involved in the design of ground-coupled heat pump systems.https://www.mdpi.com/1996-1073/12/21/4067borehole heat exchangerthermal response testparameter estimationdesign and simulation |
| spellingShingle | Xuedan Zhang Tiantian Zhang Bingxi Li Yiqiang Jiang Comparison of Four Methods for Borehole Heat Exchanger Sizing Subject to Thermal Response Test Parameter Estimation Energies borehole heat exchanger thermal response test parameter estimation design and simulation |
| title | Comparison of Four Methods for Borehole Heat Exchanger Sizing Subject to Thermal Response Test Parameter Estimation |
| title_full | Comparison of Four Methods for Borehole Heat Exchanger Sizing Subject to Thermal Response Test Parameter Estimation |
| title_fullStr | Comparison of Four Methods for Borehole Heat Exchanger Sizing Subject to Thermal Response Test Parameter Estimation |
| title_full_unstemmed | Comparison of Four Methods for Borehole Heat Exchanger Sizing Subject to Thermal Response Test Parameter Estimation |
| title_short | Comparison of Four Methods for Borehole Heat Exchanger Sizing Subject to Thermal Response Test Parameter Estimation |
| title_sort | comparison of four methods for borehole heat exchanger sizing subject to thermal response test parameter estimation |
| topic | borehole heat exchanger thermal response test parameter estimation design and simulation |
| url | https://www.mdpi.com/1996-1073/12/21/4067 |
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