Effect of floor level slit exhaust ventilation system on distribution of house dust

Lü Yang, H. Yoshino, R. Takaki, R. Kurihara, A. Mochida, H. Yonekura

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Based on the fact that the house dust usually falls on the ground, the floor level slit exhaust ventilation system including inlet located at the ceiling and outlet of slit exhaust installed at corner between wall and floor was considered. Experiments and simulations were performed to investigate the flow and diffusion fields that are affected by this floor level slit exhaust ventilation system. The characteristics of airflow with experiments and computation fluid dynamics (CFD) are generally similar except airflow at the location of impinging flow and the location right below the inlet. Riboflavin particles were used as the house dust. For the spatial distribution of riboflavin particles in the ventilation system before operation, due to the influence of gravity, different sizes of particles show smooth decay curve. After floor level slit exhaust ventilation system is operated, the decay rate of the particles becomes faster than that after the ventilation system is powered on, and the particles with diameter of 0.5-3.0 μm in the experimental data and calculated values show good agreement.

Original languageEnglish
Pages (from-to)696-702
Number of pages7
JournalJournal of Central South University of Technology (English Edition)
Issue number3
Publication statusPublished - 2012 Mar


  • Computational fluid dynamics
  • Floor level slit exhaust
  • House dust
  • Riboflavin particles

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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