A new ventilation control for inverter driven jet-fans

I. Nakahori, A. Mitani, A. Vardy

    Research output: Chapter in Book/Report/Conference proceedingOther chapter contribution

    3 Citations (Scopus)

    Abstract

    A new control system for tunnel ventilation fans is proposed. Designated FCVC (Feed-forward, Cascade-feedback, Ventilation Control), it is especially well suited to controlling variable-speed fans such as inverter-driven jet-fans, but it also has benefits for driving fixed-speed fans. It has the special advantage that the emergency control mode is a permanent sub-set of the routine control mode, thereby effectively guaranteeing availability in an emergency. In routine operation, FCVC is a combination of feed-forward control based on predicted traffic conditions and feed-back control based on measurements of airflow velocity and visibility. These are combined in a cascade manner based on differences between measured and target conditions. In emergency operation, the traffic prediction and visibility modules are by-passed and control is based solely on differences between measured and target air speeds. In this paper, the structure of FCVC is explained with special emphasis on the more general mode (i.e. routine operation) and consideration is given to matters related to the practical application of the system in real tunnels.
    Original languageEnglish
    Title of host publicationBHR Group - 14th International Symposium on Aerodynamics and Ventilation of Tunnels
    EditorsK. Hunt
    PublisherBHR Group
    Pages431-445
    Number of pages15
    ISBN (Print) 978-185598123-2
    Publication statusPublished - 2011
    Event14th International Symposium on Aerodynamics and Ventilation of Tunnels - Dundee, United Kingdom
    Duration: 11 May 201113 May 2011
    http://www.gbv.de/dms/tib-ub-hannover/665621566.pdf

    Conference

    Conference14th International Symposium on Aerodynamics and Ventilation of Tunnels
    CountryUnited Kingdom
    CityDundee
    Period11/05/1113/05/11
    Internet address

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  • Cite this

    Nakahori, I., Mitani, A., & Vardy, A. (2011). A new ventilation control for inverter driven jet-fans. In K. Hunt (Ed.), BHR Group - 14th International Symposium on Aerodynamics and Ventilation of Tunnels (pp. 431-445). BHR Group. http://www.bhrconferences.com/conferences.aspx