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来源：百度知道 编辑：UC知道 时间：2024/05/22 05:03:33
There are many opportunities to further reduce either the need for ventilation, or the proportion of the year that it will be needed. Many of these present considerable technical difficulties but, if overcome, could significantly reduce the impact of subway systems on the environment. Opportunities exist in the development of noise control for tunnel ventilation fans, regenerative breaking, external resistor grids and platform edge doors (PED). PED in particular can result in a 75% reduction in station heat loads at the cost of a larger capital investment and increased maintenance.
进一步设计的可能性
有很多机会可以进一步减少通风的需要或者它被要求的那一年的比例。很多这样目前相当多的技术难题一旦被攻破，可以极大地减少地铁系统对环境的影响。机会存在于隧道通风风扇噪音控制的发展，再生的刹车（装置），外部电阻器栅格和站台边门（PED).特别是PED可以以加大资金投资和增加维护为代价来实现站台热负荷75%的减少。
那就更加进一步的设计
可能性是许多机会进一步减少对透气的需要或者年的比例它将是需要的。 许多这些当前可观的技术困难，但，如果克服，能极大减少地铁系统的冲击对环境。 机会存在于噪音控制的发展为隧道通风机，再生打破，外在电阻器栅格和平台边缘门(PED)。 PED可能特别是导致对驻地热负荷的75%减少在更大的资本投资和增加的维护的费用。
Further design possibilities
There are many opportunities to further reduce either the need for ventilation, or the proportion of the year that it will be needed. Many of these present considerable technical difficulties but, if overcome, could significantly reduce the impact of subway systems on the environment. Opportunities exist in the development of noise control for tunnel ventilation fans, regenerative breaking, external resistor grids and platform edge doors (PED). PED in particular can result in a 75% reduction in station heat loads at the cost of a larger capital investment and increased maintenance.
进一步设计的可