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Analysis of indoor air quality in a university auditorium.

Author(s) : BORCHIELLINI R., FRACASTORO G. V., PERINO M.

Summary

The behaviour of the ventilation system installed in one of the large auditoria at the Polytechnic of Torino has been thoroughly investigated. A number of measurements of indoor air quality and ventilation indices in different conditions of occupancy load and recirculation ratios have been performed. Simulations were also performed using a finite volumes computational fluid dynamics code, with steady-state 2-D and 3-D models of the auditorium in nominal conditions. The experimental apparatus yielded the simultaneous measurement of CO2, water and tracer gases SF6 and nitrous oxide concentrations in up to six different locations within the auditorium. Results show that, in spite of the fact that CO2 concentration levels seldom exceed 1000 ppm, there is a tendency to accumulate at the upper part of the occupied area of the auditorium, and the coefficient of air change performance is rather low (about 50%).

Details

  • Original title: Analysis of indoor air quality in a university auditorium.
  • Record ID : 1995-1800
  • Languages: English
  • Source: ROOMVENT '94. Air distribution in rooms. Proceedings.
  • Publication date: 1994/06/15
  • Document available for consultation in the library of the IIR headquarters only.

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