Скачать или смотреть Air Flow Testing for Highway Tunnels, with Dr Kevin Linfield, P.E.

Air Flow Testing for Highway Tunnels A short video featuring Dr. Kevin Linfield, P.E.

Highway tunnels play a vital role in the world's transportation infrastructure. Not only do tunnels create safer, more efficient travel routes for commuters, but they also support the movement of goods and services. In the United States, the Federal Highway Administration reports that over 500 roadway tunnels are in operation, covering over 130 miles and carrying over 15 million vehicles every day. These routes often facilitate travel in otherwise difficult geographies, helping key travel continue in spite of mountain terrain and waterways.

Tunnels on roadways need to have sufficient air flow to prevent buildup of exhaust emissions. In many cases, tunnels are equipped with sensors that detect carbon monoxide and make automatic adjustments to dissipate harmful vapors. Ventilation systems can consist of a few simple fans, or they can include entire air supply and return systems that run above or beneath the tunnel. Inadequate ventilation can have some serious consequences, especially when it comes to risk events like vehicle fires, when smoke and heat must be cleared quickly.

The FHA requires regular inspection of tunnels throughout the United States. Similar to the National Bridge Inspection Standards, the National Tunnel Inspection Standards ensure that tunnels are checked for structural and operational health, including ventilation systems.

When these systems are evaluated, the flow rate and static pressure rise generated by fans at various operational settings are measured. Often the entire ventilation system, including supply and return plenums, are tested.

For more information on field testing, please contact Airflow Sciences. Thank you, and have a wonderful day.

Copyright Airflow Sciences Corporation. With contributions by Kelly Hile and Dr. Kevin Linfield, P.Eng., P.E.