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A platform for research: civil engineering, architecture and urbanism
High temperature testing and certification of fans for tunnel ventilation
In case of a fire incident the axial fans used for smoke and heat extraction in European road tunnels should be capable to handle air and smoke with temperatures of 250 °C or 400 °C for a period of 90 to 120 minutes. Increasingly authorities and tunnel operators require certification of such fans in accordance with European Standard EN 12101-3. The Zitron Group has tested and certified numerous axial fans at different testing institutes. In the paper Zitron Nederland will share their views, experiences and lessons learned during the design, installation and certification of large axial fans for high temperature smoke extraction in road tunnels. The following conclusions were reached: (1) High temperature certificates of large exhaust fans based on past testing have to be carefully evaluated on validity for new applications. Most likely a new high temperature test is required. (2) Availability of certificates may drive fan selection and result in less efficient fans. (3) Design reports can be considered as an alternative means of verification. (4) The use of an external cooling system reduces the temperatures in the inner tubes considerably resulting in less down time o f the tunnel after an incident and offering opportunities for cost savings.
High temperature testing and certification of fans for tunnel ventilation
In case of a fire incident the axial fans used for smoke and heat extraction in European road tunnels should be capable to handle air and smoke with temperatures of 250 °C or 400 °C for a period of 90 to 120 minutes. Increasingly authorities and tunnel operators require certification of such fans in accordance with European Standard EN 12101-3. The Zitron Group has tested and certified numerous axial fans at different testing institutes. In the paper Zitron Nederland will share their views, experiences and lessons learned during the design, installation and certification of large axial fans for high temperature smoke extraction in road tunnels. The following conclusions were reached: (1) High temperature certificates of large exhaust fans based on past testing have to be carefully evaluated on validity for new applications. Most likely a new high temperature test is required. (2) Availability of certificates may drive fan selection and result in less efficient fans. (3) Design reports can be considered as an alternative means of verification. (4) The use of an external cooling system reduces the temperatures in the inner tubes considerably resulting in less down time o f the tunnel after an incident and offering opportunities for cost savings.
High temperature testing and certification of fans for tunnel ventilation
Vemden, F. van (author)
2014
8 Seiten, Bilder, Tabellen
Conference paper
English
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