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The Effect of Ventilation, Filtration and Passive Sorption on Indoor Air Quality in Museum Storage Rooms

2009; Taylor & Francis; Volume: 54; Issue: 1 Linguagem: Inglês

10.1179/sic.2009.54.1.35

2047-0584

Morten Ryhl-Svendsen, Geo Clausen,

Building Energy and Comfort Optimization

AbstractA study was conducted in five storage rooms at the National Museum of Denmark, in which the effect on indoor air quality of mechanical ventilation, filtration and passive sorption was investigated. Mechanical ventilation and recirculation/filtration was initiated by introducing new ventilation and filtration units. Passive sorption was initiated by hanging sheets of sorptive materials on walls. The control strategies were evaluated in terms of their ability to lower the concentration of internally generated pollutants, and the indoor-to-outdoor concentration ratio of outdoor pollutants. The overall environmental impact for each method was evaluated by the use of material dosimeters. It was found that passive sorption performed better in a small room compared to a large room. Mechanical ventilation and filtration with activated charcoal gave a high protection against ozone, but were less effective in reducing nitrogen dioxide. Increased ventilation rates were expected to dilute internally generated pollutants, but ambiguous results imply that the emission rate of organic acids may also vary. Recirculation/filtration was generally the most efficient method. A cautious conclusion is that a combination of a low air exchange rate and internal recirculation with filtration will be most beneficial to the indoor air quality for such low-activity storage buildings.