Floor-supply displacement ventilation for workshops

Josephine Lau, Qingyan Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

74 Citations (Scopus)


This paper reported the investigation of the performance of floor-supply displacement ventilation with swirl diffusers or perforated panels under a high cooling load (nearly 90 W/m2). The experiment was carried out in a full-scale environmental chamber to obtain reliable data on the floor-supply displacement ventilation for the validation of a computational-fluid-dynamics (CFD) program. Numerical simulations using CFD program were to evaluate the performance of the system for a large workshop. The impacts of several parameters, such as the air change rate, number of diffusers, diffuser location, occupant location, furniture arrangement, partition location, and arrangement of exhausts, on the indoor environment were investigated based on the thermal comfort level and indoor air quality. This study ranked the impacts of these parameters on indoor environment.

Original languageEnglish
Pages (from-to)1718-1730
Number of pages13
JournalBuilding and Environment
Issue number4
Publication statusPublished - Apr 2007


  • Computational-fluid-dynamics
  • Floor-supply displacement ventilation
  • Indoor air quality
  • Perforated panels
  • Swirl diffusers
  • Thermal comfort

ASJC Scopus subject areas

  • Environmental Engineering
  • Civil and Structural Engineering
  • Geography, Planning and Development
  • Building and Construction


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