Study on the Energy-Saving Technology of the Extra-Long Tunnels Using Natural Wind for Ventilation

The operation ventilation in super-long road tunnels is always a significant part of the sustainable operation and maintenance of road tunnels which accounts for a big part of energy consumption. Thus the utilization of natural wind in extra-long tunnels has great economic value and social significance. In addition, the pressure difference exists between the tunnel portal and the shaft or inclined shaft makes the application of natural wind for energy-saving ventilation possible, and using of the natural wind in underground engineering has the technical feasibility. The deep reasons for the huge energy consumption in operation ventilation are the lack of consideration about the potentiality in natural wind for the ventilation and the design method for the energy-saving ventilation using natural wind. The design concept for the energy-saving ventilation by taking advantage of natural wind is proposed in this study, that is, taking full advantage of natural wind, or using a small amount of mechanical ventilation devices as the auxiliary and accessory part to induce and control the wind achieving the purpose the ventilation in tunnels. In the specific implementation, the basement of taking advantage of natural wind for the energy-saving ventilation is to obtain its annual regulations of the speed and direction. And the designing wind speed meeting a certain guaranteed rate can be gained with year-round data of the speed and direction of natural wind in tunnels. Then the energy-saving design depending on different wind speeds and directions will contributes to a situation where the ventilation system makes maximum use of natural energy and reduces manual interventions.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Illustrations; Photos; References;
  • Pagination: 7p
  • Monograph Title: Proceedings of the 25th World Road Congress - Seoul 2015: Roads and Mobility - Creating New Value from Transport

Subject/Index Terms

Filing Info

  • Accession Number: 01714072
  • Record Type: Publication
  • ISBN: 9782840604235
  • Files: TRIS
  • Created Date: Jul 5 2019 10:25AM