Case study on ventilation and cooling control technology of multi heat source coupling in long distance subsea tunnel construction
To solve the high-temperature environmental hazards caused by concrete hydration heat release in tunnel construction, this paper studies the heat generation mechanism of heat source in the tunnel using theoretical analysis and numerical simulation, and analyzes the temperature control in the tunnel...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-08-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X21002240 |
| _version_ | 1818620071556153344 |
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| author | Yapeng Wang |
| author_facet | Yapeng Wang |
| author_sort | Yapeng Wang |
| collection | DOAJ |
| description | To solve the high-temperature environmental hazards caused by concrete hydration heat release in tunnel construction, this paper studies the heat generation mechanism of heat source in the tunnel using theoretical analysis and numerical simulation, and analyzes the temperature control in the tunnel under different ventilation wind speed (1 m/s, 2 m/s, 3 m/s, 4 m/s, 5 m/s) and ventilation temperature (298 K, 293 K, 288 K, 283 K, 278 K). The results show that: increasing the ventilation speed can effectively reduce the environmental temperature in the tunnel, and the ventilation cooling effect is the best when the air duct outlet speed is 3 m/s. Reducing the ventilation temperature can further reduce the tunnel temperature based on increasing the ventilation speed. When the ventilation temperature is set at 293 K, it can meet the needs of ventilation and cooling at the tunnel face. The simulation results show that when the tunnel ventilation speed is 3 m/s and the ventilation temperature is 293 k, the maximum cooling value of the working face can reach 6.66 k, and the maximum cooling rate is 2.18%. Within 5 m from the tunnel working face, the cooling effect of the enclosure structure is the most obvious, which can effectively ensure the comfort of the working environment. |
| first_indexed | 2024-12-16T17:47:33Z |
| format | Article |
| id | doaj.art-46a2f9210f274aad8f75039bdce703b4 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-12-16T17:47:33Z |
| publishDate | 2021-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-46a2f9210f274aad8f75039bdce703b42022-12-21T22:22:24ZengElsevierCase Studies in Thermal Engineering2214-157X2021-08-0126101061Case study on ventilation and cooling control technology of multi heat source coupling in long distance subsea tunnel constructionYapeng Wang0College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, 266042, PR ChinaTo solve the high-temperature environmental hazards caused by concrete hydration heat release in tunnel construction, this paper studies the heat generation mechanism of heat source in the tunnel using theoretical analysis and numerical simulation, and analyzes the temperature control in the tunnel under different ventilation wind speed (1 m/s, 2 m/s, 3 m/s, 4 m/s, 5 m/s) and ventilation temperature (298 K, 293 K, 288 K, 283 K, 278 K). The results show that: increasing the ventilation speed can effectively reduce the environmental temperature in the tunnel, and the ventilation cooling effect is the best when the air duct outlet speed is 3 m/s. Reducing the ventilation temperature can further reduce the tunnel temperature based on increasing the ventilation speed. When the ventilation temperature is set at 293 K, it can meet the needs of ventilation and cooling at the tunnel face. The simulation results show that when the tunnel ventilation speed is 3 m/s and the ventilation temperature is 293 k, the maximum cooling value of the working face can reach 6.66 k, and the maximum cooling rate is 2.18%. Within 5 m from the tunnel working face, the cooling effect of the enclosure structure is the most obvious, which can effectively ensure the comfort of the working environment.http://www.sciencedirect.com/science/article/pii/S2214157X21002240Tunnel constructionVentilation coolingHydration heat releaseHeat damage |
| spellingShingle | Yapeng Wang Case study on ventilation and cooling control technology of multi heat source coupling in long distance subsea tunnel construction Case Studies in Thermal Engineering Tunnel construction Ventilation cooling Hydration heat release Heat damage |
| title | Case study on ventilation and cooling control technology of multi heat source coupling in long distance subsea tunnel construction |
| title_full | Case study on ventilation and cooling control technology of multi heat source coupling in long distance subsea tunnel construction |
| title_fullStr | Case study on ventilation and cooling control technology of multi heat source coupling in long distance subsea tunnel construction |
| title_full_unstemmed | Case study on ventilation and cooling control technology of multi heat source coupling in long distance subsea tunnel construction |
| title_short | Case study on ventilation and cooling control technology of multi heat source coupling in long distance subsea tunnel construction |
| title_sort | case study on ventilation and cooling control technology of multi heat source coupling in long distance subsea tunnel construction |
| topic | Tunnel construction Ventilation cooling Hydration heat release Heat damage |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X21002240 |
| work_keys_str_mv | AT yapengwang casestudyonventilationandcoolingcontroltechnologyofmultiheatsourcecouplinginlongdistancesubseatunnelconstruction |