The Heat Exchange Coefficient of the Cooling Tube Under the Influence of the Tube Material and Cooling Water Parameters
The traditional finite element method deals with the temperature field around the cooling tube due to the computational efficiency problems caused by grid division and the uncertainty of the convective heat transfer coefficient, resulting in inaccurate calculation results around the cooling tube. We...
| 发表在: | Buildings |
|---|---|
| Main Authors: | , , , , , , |
| 格式: | 文件 |
| 语言: | 英语 |
| 出版: |
MDPI AG
2025-06-01
|
| 主题: | |
| 在线阅读: | https://www.mdpi.com/2075-5309/15/12/2014 |
| _version_ | 1849451846709542912 |
|---|---|
| author | Hong Zhang Qiuliang Long Fengqi Guo Zhaolong Shen Xu Chen Ran Yu Yonggang Wang |
| author_facet | Hong Zhang Qiuliang Long Fengqi Guo Zhaolong Shen Xu Chen Ran Yu Yonggang Wang |
| author_sort | Hong Zhang |
| collection | DOAJ |
| container_title | Buildings |
| description | The traditional finite element method deals with the temperature field around the cooling tube due to the computational efficiency problems caused by grid division and the uncertainty of the convective heat transfer coefficient, resulting in inaccurate calculation results around the cooling tube. We conducted experiments to study the thermal stress and temperature gradient caused by various factors such as different materials of cooling pipes, pipe diameters, cooling water temperatures, and flow rates. The results showed that aluminum alloy pipes had the highest cooling efficiency but also produced a large temperature gradient. Pipe diameter had the most significant impact on cooling efficiency. Additionally, it is recommended that the cooling water flow velocity is not less than 0.6 m/s to achieve the best efficiency for the cooling pipe of any pipe diameter. The influence range of the cooling pipe on concrete could vary with pipe material, flow rate, and ambient factors. Our experimental results were compared with other heat transfer formulas (the Dittus–Boelter formula and the Yang Joo-Kyoung formula). According to the measured results, the formula is modified). The modified formula can estimate the heat transfer coefficient more accurately according to the flow rate and pipeline characteristics. Finally, the applicability of the formula is further verified by comparing the concrete on the bottom plate of a dam. The proposed heat transfer prediction model can estimate the heat transfer coefficient according to the flow rate and pipeline characteristics, The accuracy of the convection coefficient under different working conditions is improved by 10–25%. It is convenient to predict concrete temperature in practical engineering. |
| format | Article |
| id | doaj-art-e69b28c428ed4656b5eb5482baef7003 |
| institution | Directory of Open Access Journals |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| spelling | doaj-art-e69b28c428ed4656b5eb5482baef70032025-08-20T03:27:21ZengMDPI AGBuildings2075-53092025-06-011512201410.3390/buildings15122014The Heat Exchange Coefficient of the Cooling Tube Under the Influence of the Tube Material and Cooling Water ParametersHong Zhang0Qiuliang Long1Fengqi Guo2Zhaolong Shen3Xu Chen4Ran Yu5Yonggang Wang6College of Mechanical and Intelligent Manufacturing, Central South University of Forestry and Technology, Changsha 410075, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaHunan Harbor Engineering Co., Ltd., Changsha 410021, ChinaHunan Harbor Engineering Co., Ltd., Changsha 410021, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaThe traditional finite element method deals with the temperature field around the cooling tube due to the computational efficiency problems caused by grid division and the uncertainty of the convective heat transfer coefficient, resulting in inaccurate calculation results around the cooling tube. We conducted experiments to study the thermal stress and temperature gradient caused by various factors such as different materials of cooling pipes, pipe diameters, cooling water temperatures, and flow rates. The results showed that aluminum alloy pipes had the highest cooling efficiency but also produced a large temperature gradient. Pipe diameter had the most significant impact on cooling efficiency. Additionally, it is recommended that the cooling water flow velocity is not less than 0.6 m/s to achieve the best efficiency for the cooling pipe of any pipe diameter. The influence range of the cooling pipe on concrete could vary with pipe material, flow rate, and ambient factors. Our experimental results were compared with other heat transfer formulas (the Dittus–Boelter formula and the Yang Joo-Kyoung formula). According to the measured results, the formula is modified). The modified formula can estimate the heat transfer coefficient more accurately according to the flow rate and pipeline characteristics. Finally, the applicability of the formula is further verified by comparing the concrete on the bottom plate of a dam. The proposed heat transfer prediction model can estimate the heat transfer coefficient according to the flow rate and pipeline characteristics, The accuracy of the convection coefficient under different working conditions is improved by 10–25%. It is convenient to predict concrete temperature in practical engineering.https://www.mdpi.com/2075-5309/15/12/2014mass concretecooling pipe materialcooling water parametersheat exchange coefficient |
| spellingShingle | Hong Zhang Qiuliang Long Fengqi Guo Zhaolong Shen Xu Chen Ran Yu Yonggang Wang The Heat Exchange Coefficient of the Cooling Tube Under the Influence of the Tube Material and Cooling Water Parameters mass concrete cooling pipe material cooling water parameters heat exchange coefficient |
| title | The Heat Exchange Coefficient of the Cooling Tube Under the Influence of the Tube Material and Cooling Water Parameters |
| title_full | The Heat Exchange Coefficient of the Cooling Tube Under the Influence of the Tube Material and Cooling Water Parameters |
| title_fullStr | The Heat Exchange Coefficient of the Cooling Tube Under the Influence of the Tube Material and Cooling Water Parameters |
| title_full_unstemmed | The Heat Exchange Coefficient of the Cooling Tube Under the Influence of the Tube Material and Cooling Water Parameters |
| title_short | The Heat Exchange Coefficient of the Cooling Tube Under the Influence of the Tube Material and Cooling Water Parameters |
| title_sort | heat exchange coefficient of the cooling tube under the influence of the tube material and cooling water parameters |
| topic | mass concrete cooling pipe material cooling water parameters heat exchange coefficient |
| url | https://www.mdpi.com/2075-5309/15/12/2014 |
| work_keys_str_mv | AT hongzhang theheatexchangecoefficientofthecoolingtubeundertheinfluenceofthetubematerialandcoolingwaterparameters AT qiulianglong theheatexchangecoefficientofthecoolingtubeundertheinfluenceofthetubematerialandcoolingwaterparameters AT fengqiguo theheatexchangecoefficientofthecoolingtubeundertheinfluenceofthetubematerialandcoolingwaterparameters AT zhaolongshen theheatexchangecoefficientofthecoolingtubeundertheinfluenceofthetubematerialandcoolingwaterparameters AT xuchen theheatexchangecoefficientofthecoolingtubeundertheinfluenceofthetubematerialandcoolingwaterparameters AT ranyu theheatexchangecoefficientofthecoolingtubeundertheinfluenceofthetubematerialandcoolingwaterparameters AT yonggangwang theheatexchangecoefficientofthecoolingtubeundertheinfluenceofthetubematerialandcoolingwaterparameters AT hongzhang heatexchangecoefficientofthecoolingtubeundertheinfluenceofthetubematerialandcoolingwaterparameters AT qiulianglong heatexchangecoefficientofthecoolingtubeundertheinfluenceofthetubematerialandcoolingwaterparameters AT fengqiguo heatexchangecoefficientofthecoolingtubeundertheinfluenceofthetubematerialandcoolingwaterparameters AT zhaolongshen heatexchangecoefficientofthecoolingtubeundertheinfluenceofthetubematerialandcoolingwaterparameters AT xuchen heatexchangecoefficientofthecoolingtubeundertheinfluenceofthetubematerialandcoolingwaterparameters AT ranyu heatexchangecoefficientofthecoolingtubeundertheinfluenceofthetubematerialandcoolingwaterparameters AT yonggangwang heatexchangecoefficientofthecoolingtubeundertheinfluenceofthetubematerialandcoolingwaterparameters |