Enhanced Heat Transfer Characteristics of Graphite Concrete and Its Application in Energy Piles
The latest research on energy piles demonstrates that most scholars are focusing their attention on optimization by designing more efficient heat exchanger coils, analyzing the heat pump matching parameters, and so on. However, after more than 20 years of development, these traditional methods for i...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/8142392 |
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| _version_ | 1832545648125149184 |
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| author | Qingwen Li Lu Chen Haotian Ma Chung-Ho Huang |
| author_facet | Qingwen Li Lu Chen Haotian Ma Chung-Ho Huang |
| author_sort | Qingwen Li |
| collection | DOAJ |
| description | The latest research on energy piles demonstrates that most scholars are focusing their attention on optimization by designing more efficient heat exchanger coils, analyzing the heat pump matching parameters, and so on. However, after more than 20 years of development, these traditional methods for improving the heat transfer efficiency of energy piles have reached a bottleneck, and a new approach for the continued enhancement of this technology must be investigated. In this study, powdered graphite with high heat transfer characteristics was included in a concrete mix to create graphite concrete piles with enhanced heat transfer characteristics. The results from theoretical analysis, laboratory testing, and numerical simulation indicate that using graphite to improve the heat transfer efficiency of a concrete material is an effective method for enhancing the thermal efficiency of an energy pile system. The research results also show that the heat transfer coefficient of the concrete exhibits greater improvement when the graphite content is greater than 15% under the same environmental temperature. After studying the performance of the proposed graphite concrete energy pile under different environmental temperatures (10°C, 20°C, 30°C, and 40°C), the results indicate that the working efficiency of the energy pile is better in the summer than in the winter. Finally, parameters such as the cast-in pipe configuration and pile spacing are optimized. |
| format | Article |
| id | doaj-art-69b1960e19b2428eb44ab7adab175c5c |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-69b1960e19b2428eb44ab7adab175c5c2025-02-03T07:25:06ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/81423928142392Enhanced Heat Transfer Characteristics of Graphite Concrete and Its Application in Energy PilesQingwen Li0Lu Chen1Haotian Ma2Chung-Ho Huang3Department of Civil Engineering, University of Science and Technology Beijing, Beijing, ChinaDepartment of Civil Engineering, University of Science and Technology Beijing, Beijing, ChinaDepartment of Civil Engineering, University of Science and Technology Beijing, Beijing, ChinaDepartment of Civil Engineering, National Taipei University of Technology, Taipei City 10608, TaiwanThe latest research on energy piles demonstrates that most scholars are focusing their attention on optimization by designing more efficient heat exchanger coils, analyzing the heat pump matching parameters, and so on. However, after more than 20 years of development, these traditional methods for improving the heat transfer efficiency of energy piles have reached a bottleneck, and a new approach for the continued enhancement of this technology must be investigated. In this study, powdered graphite with high heat transfer characteristics was included in a concrete mix to create graphite concrete piles with enhanced heat transfer characteristics. The results from theoretical analysis, laboratory testing, and numerical simulation indicate that using graphite to improve the heat transfer efficiency of a concrete material is an effective method for enhancing the thermal efficiency of an energy pile system. The research results also show that the heat transfer coefficient of the concrete exhibits greater improvement when the graphite content is greater than 15% under the same environmental temperature. After studying the performance of the proposed graphite concrete energy pile under different environmental temperatures (10°C, 20°C, 30°C, and 40°C), the results indicate that the working efficiency of the energy pile is better in the summer than in the winter. Finally, parameters such as the cast-in pipe configuration and pile spacing are optimized.http://dx.doi.org/10.1155/2018/8142392 |
| spellingShingle | Qingwen Li Lu Chen Haotian Ma Chung-Ho Huang Enhanced Heat Transfer Characteristics of Graphite Concrete and Its Application in Energy Piles Advances in Materials Science and Engineering |
| title | Enhanced Heat Transfer Characteristics of Graphite Concrete and Its Application in Energy Piles |
| title_full | Enhanced Heat Transfer Characteristics of Graphite Concrete and Its Application in Energy Piles |
| title_fullStr | Enhanced Heat Transfer Characteristics of Graphite Concrete and Its Application in Energy Piles |
| title_full_unstemmed | Enhanced Heat Transfer Characteristics of Graphite Concrete and Its Application in Energy Piles |
| title_short | Enhanced Heat Transfer Characteristics of Graphite Concrete and Its Application in Energy Piles |
| title_sort | enhanced heat transfer characteristics of graphite concrete and its application in energy piles |
| url | http://dx.doi.org/10.1155/2018/8142392 |
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