AIR VELOCITY AND CONCENTRATION OF NOXIOUS SUBSTANCES IN A NATURALLY VENTILATED TUNNEL

All internal combustion engines produce exhaust gases containing noxious compounds: carbon monoxide (CO), nitrogen oxides (NOx), carbon oxides (CxOy) and exhaust gases. With the help of the mathematical model the concentrations of some dangerous substances at the end of tunnel with unidirectional traffic were calculated, and were replaced with a criterial number. Corresponding software was developed, which makes it possible to do quick and simple calculations for some concentrations and the criterial number. Finally, presented is a correlation between criterial number and the other parameters as a criterion to determine a threshold between natural and forced ventilation. (A)

  • Availability:
  • Corporate Authors:

    Elsevier

    The Boulevard, Langford Lane
    Kidlington, Oxford  United Kingdom  OX5 1GB
  • Authors:
    • MODIC, J
  • Publication Date: 2003-8

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00962721
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Sep 3 2003 12:00AM