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Utilisation des mesures des teneurs en dioxyde de carbone pour déterminer le taux d'occupation et la commande de l'apport d'air neuf.

Using carbon dioxide measurements to determine occupancy for ventilation controls.

Auteurs : KE Y. P., MUMMA S. A.

Résumé

The paper proposes a new method to determine the dynamic zonal occupancy for ventilation control based upon measured carbon dioxide (CO2) concentrations in the supply and return air. The central thesis of this proposed transient method is that a fixed CO2 threshold based upon occupancy alone is not possible under the current proposed BSR/ASHRAE Standard 62-1989R. Rather, the actual dynamic occupancy head count must be known since the ventilation requirements consist of two parts - the building component and the occupancy component. The result is that the CO2 threshold must constantly be changed in time with occupancy. The paper employs simulation results for well-mixed office and conference rooms as the basis for comparison of the proposed transient occupancy-based ventilation with two other accepted methods: the CO2-based ventilation and the constant airflow ventilation.

Détails

  • Titre original : Using carbon dioxide measurements to determine occupancy for ventilation controls.
  • Identifiant de la fiche : 1999-0450
  • Langues : Anglais
  • Source : ASHRAE Transactions.1997 Annual Meeting, Boston, MA.
  • Date d'édition : 1997
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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