沉管隧道自动捕风节能系统研究

A study of automatic wind-catching and energy-saving system in immersed tunnel

对自动捕风装置在隧道中的应用进行研究。结果表明:ε=3的圆锥形渐扩口为最佳设计尺寸;隧道采用自动捕风装置可以节约运营通风成本。当外界的自然风为6.6m/s时,采用百台自动捕风装置后节能百分比为26.8%。当外界自然风速达到10.8m/s时,采用百台自动捕风装置后节能百分比为40.2%。

Application of the automatic wind catcher in the immersed tunnel was studied in this work. The results show that ： the best design size is suggested as 8 = 3 for conical flaring based on comparative analysis, and the cost of operation ventilation may be saved by using the automatic wind-catching device in tunnel. Provided that one hundred automatic wind-catching devices are utilized in the tunnel, when the natural wind speed is 6.6m/s, the energy saving is 26.8%, while when the natural wind speed is 10.8m/s, the energy saving may be increased to be 40.2%.