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Indoor Air Quality Management by Combined Ventilation and Air Cleaning: An Experimental Study

Category: Control Techniques and Strategy

Volume: 16 | Issue: 10 | Pages: 2550-2559
DOI: 10.4209/aaqr.2015.10.0577
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Darius Ciuzas1, Tadas Prasauskas 1, Edvinas Krugly1, Andrius Jurelionis2, Lina Seduikyte2, Dainius Martuzevicius1

  • 1 Department of Environmental Technology, Kaunas University of Technology, LT-50254 Kaunas, Lithuania
  • 2 Department of Building Energy Systems, Kaunas University of Technology, LT-51367 Kaunas, Lithuania

Highlights

Ventilation and air cleaning were investigated for the removal of PM and VOCs.
CADR, energy and removal efficiency were determined for multi-staged cleaners.
Air cleaners proved to be more efficient devices than ventilation to remove PM.
Ventilation was more effective for removal of VOCs.
Combined ventilation and cleaning removed 97% of PM and 60% of VOCs in 30 min.


Abstract

A combination of ventilation and air cleaning regimes were investigated for the removal of aerosol particles and volatile organic compounds (VOCs) in a test chamber, representing a typical room. A series of portable multi-staged air cleaner efficiency tests were performed examining tobacco smoke as a source of pollution. Portable indoor air cleaners were effective in removing of particles, reaching up to 97% removal efficiency based on particle number concentrations after 30 minutes, while Clean Air Delivery Rate (CADRPNC) varied from 37 ± 4 to 237 ± 11 m3 h–1. The removal of VOCs varied from 21.4 to 45.7% and CADRVOC ranged from 2.2 ± 0.3 to 29.9 ± 2.8 m3 h–1, indicating substantially lower efficiency. The combination of ventilation and air cleaning provided different responses with respect to pollutant removal and energy efficiency. The air cleaning was the most efficient for removing particulate matter from indoor air, minimizing the requirement for ventilation. On the other hand, the ventilation seemed to be more efficient in the removal of VOCs, while the combination of ventilation and air cleaning increased pollutant removal efficiency by 20% and maximized the energy efficiency.

Keywords

Indoor air quality Air cleaning Ventilation Particulate matter Volatile organic compounds


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