AIVC - Air Infiltration and Ventilation Centre

Search form

EBC

You are here

Home  |  ventilation system

A Study on Ventilation Systems for Removing Indoor House Dust

Yang Lu, Hiroshi Yoshino, Rie Takaki, Genta Kurihara, Hiroshi Yonekura, Jing Liu, 2010
house dust | ventilation system | measurement | Computational fluid dynamics (CFD) | outlet
Bibliographic info: The International Journal of Ventilation, Vol. 9 N°1, June 2010
Languages: English

This study evaluated various ventilation strategies for efficiently removing house dust in the indoor environment. Experiments and simulations were performed to study the flow and diffusion fields that are affected by different locations and shapes of outlets. In this study, two kinds of ventilation strategies were considered i.e. ceiling exhaust and slit exhaust. In each case, experimental measurements showed that the characteristics of airflow within the whole room are generally similar except for airflow close to the outlet. CFD flow field and diffusion field simulations were also made. The CFD characteristics of airflow were similar to the experimental results. In the simulations, the volume-average concentration of house dust within the whole room decreased gradually. From the results, a conclusion can be drawn that the volume-average concentration of house dust within the whole room is lower in the case of slit exhaust than ceiling exhaust. After a ventilation period of 30 minutes the CFD results showed removal efficiencies for the ceiling exhaust and slit exhaust of 15% and 26% respectively at a low air change rate of 0.5 h-1, while the removal efficiencies of ceiling exhaust and slit exhaust are 51% and 57% respectively at a high air change rate of 2.5 h-1


Related publications

This report summarizes the work of the initial working phase of IEA ECB Annex 62 Ventil
Maria Kolokotroni, Per Heiselberg, Lorenzo Pagliano, Jie Han, Regina Bokel, Peter Holzer, Annamaria Belleri, Denmark
This summary report presents insights on recommendations into how ventilative cooling i
Christoffer Plesner, Flourentzos Flourentzou, Guoqiang Zhang, Hilde Breesch, Per Heiselberg, Michal Pomianowski, Peter Holzer, Maria Kolokotroni, Annamaria Belleri, Denmark
Overheating in buildings is an emerging challenge at the design stage and during operat
Peter Holzer, Theofanis Psomas, Denmark