长大隧道之自然通风应用及节能减碳(英文)

节能减碳为现代隧道营运管理之重要课题,对于长大隧道而言又更加凸显其重要性。而自然通风的应用,可说是针对节能减碳值得被重新考虑的选项。本研究建立了数值模式,可用于隧道自然通风与机械通风之模拟。相较于铁路通风,公路通风之活塞效应较不明显,自然通风与机械通风之整合可应用于长大隧道之通风设计。本研究建立之数值模式将通风系统简化为通风网络来分析,配合现地量测来取得参数及律定,建立之数值模式可用于不同季节条件、以及火灾等不同紧急状况之通风分析。针对台湾某长大隧道之案例分析,结果显示自然通风可提供至少10%之通风需求。如能更有效地将自然通风整合于长大隧道之通风设计,不但能达到长期节能减碳目的,也可一并应用于常时通风及紧急通风。

Natural Ventilation and Energy Saving for A Long Tunnel

Energy saving is an important issue in the management of a tunnel,especially for a long tunnel,in operation.And it can be pursued by properly integrating natural ventilation in the tunnel ventilation design.In this study,a numerical model was developed for the simulation of natural and mechanical ventilation effect for a long tunnel.As the piston effect is comparatively less significant for a long road tunnel,natural and mechanical ventilation becomes important and could be beneficially considered and applied in ventilation design.A ventilation network analysis model is developed,in-situ testing data were used for calibration,and the calibrated numerical model was used to predict the distribution of airflow for different tunnel conditions including the emergency ventilation situations.The results of the case study show that,natural ventilation effect could provide about 10% of the ventilation required.It can be integrated in the ventilation design of a long road tunnel for the regular traffic as well as the emergency conditions.