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Appl. Sci. 2017, 7(5), 454; doi:10.3390/app7050454

Energy-Saving Network Ventilation Technology of Extra-Long Tunnel in Climate Separation Zone

Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, 111 Erhuan Rd, Chengdu 610031, China
College of Foreign Languages, Southwest Jiaotong University, 111 Erhuan Rd, Chengdu 610031, China
Author to whom correspondence should be addressed.
Academic Editors: Eric Ka-wai Cheng and Luisa F. Cabeza
Received: 21 January 2017 / Revised: 16 April 2017 / Accepted: 23 April 2017 / Published: 28 April 2017
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Saving energy is a major challenge for the development and safety of the world. Researchers at home and abroad have been continuously working on energy saving technology in the tunnel ventilation for decades. Based on segmented longitudinal ventilation for extra-long road tunnels, the main ventilation mode and utilization method of natural wind energy in extra-long road tunnel were analyzed in this paper. In addition, the possible velocity distribution of natural wind in each section under wind pressure was investigated. Principles of natural wind in each tunnel section were studied based on long-term monitored meteorological factors. Accordingly, a fan equipment configuration method with high guaranteed rate during tunnel operation was proposed. A calculation method for energy-saving network ventilation in the tunnels was established. A feasible and efficient optimized energy-saving ventilation strategy was proposed, which utilizes natural wind and reduces the operation energy consumption. Thus, the annual energy saving in ventilation can reach up to 43.2% compared to previous energy costs when the intelligent ventilation system works. The research results can properly combine natural wind energy with mechanical ventilation to realize the smart self-energy saving in extra-long tunnels. View Full-Text
Keywords: extra-long tunnel; natural wind; energy-saving; control strategy extra-long tunnel; natural wind; energy-saving; control strategy

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Guo, C.; Xu, J.; Yang, L.; Guo, X.; Zhang, Y.; Wang, M. Energy-Saving Network Ventilation Technology of Extra-Long Tunnel in Climate Separation Zone. Appl. Sci. 2017, 7, 454.

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