Title
Effect of building and installation design on PM2.5
Author
Jacobs, P.
Borsboom, W.A.
Publication year
2015
Abstract
People spend more than 80% of their time indoors. In contrast to ambient air, no (legal) limits for indoor particulate matter exist, although there are WHO guidelines. In the Netherlands a measurement protocol to determine the PM2.5 in office buildings has been developed including 5 quality classes. However at the moment no simple guidelines or models are available which can support the design and in-use phases to predict the PM2.5 concentration in office buildings and schools. This paper describes the results of a mass balance model which predicts the effect of building and installation design parameters on PM2.5 concentration. Three experimental case studies are used to fit the parameters in the model and to validate the model. For Dutch buildings both air tightness in combination with the ventilation flow as the filter quality prove to be critical factors. In the US, due to high recirculation rates, increasing the ventilation flow or reducing the infiltration flow has only a minor effect. There it is more effective to increase the filter quality. The results of our model further indicate that it is well possible for modern offices equipped with F7 filters to be below the WHO air quality guideline for annual mean PM2.5 of less than 10 μg/m3. It would be interesting to further validate the model with regard to deposition losses in offices and to include PM10 in the model for schools.
Subject
Fluid & Solid Mechanics
HTFD - Heat Transfer & Fluid Dynamics
TS - Technical Sciences
Buildings and Infrastructures
Environment
Built Environment
PM2,5
Office building
School
Air tightness
Filter quality
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http://resolver.tudelft.nl/uuid:f1325e42-8265-420d-a580-580f290395be
TNO identifier
528376
Source
36th AIVC Conference “Effective ventilation in high perfomance buildings”, 23-24 September 2015, Madrid, Spain
Document type
conference paper