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Estimation methods of required ventilation rate in underground car parks.

[In Japanese. / En japonais.]

Author(s) : YOSHINO H., KONDO Y.

Type of article: Article

Summary

In underground car parks, vehicles emit exhaust gases, including carbon monoxide (hereafter CO) etc. Underground car parks are usually mechanically ventilated because they are enclosed with walls, etc. and there are not enough effective openings for natural ventilation. In such large enclosures containing contaminant sources, it is important to supply fresh air for the occupied zone and to remove polluted air efficiently. In the paper, the acceptable concentration of CO and the required ventilation rate for a car park in Japan were compared with those in other countries. The pollutant emission rate from vehicles was decreased by recent emission regulations. The CO emission volume was estimated by the amount of time vehicles travelled according to the sizes of car parks and the frequency of entering/exiting vehicles. The procedure to estimate the CO emission volume and the required ventilation rate was demonstrated using several charts.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 2005-0392
  • Languages: Japanese
  • Source: Transaction of the Society of Heating, Air-conditioning and Sanitary Engineers of Japan - n. 93
  • Publication date: 2004/04

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