Experimental study on the floor-supply displacement ventilation system

Takashi Akimoto, Tatsuo Nobe, Yoshihisa Takebayashi

Research output: Contribution to journalConference articlepeer-review

16 Citations (Scopus)


These results are presented from a research project to investigate the effects of a floor-supply displacement ventilation system with practical indoor heat loads. The experiments were performed in an experimental chamber (35.2 m2) located in a controlled environment chamber. Temperature distributions were measured at seven heights throughout the experimental chamber for each test condition. Data were analyzed to observe thermal stratification as affected by lighting, occupants, and heat loads (personal computers), and its disruption caused by walking and change of air volume. In addition, airflow characteristics and ventilation efficiencies were investigated using a smoke machine, tobacco smoke, dust for industrial testing and a tracer gas (CO2) step-up procedure.

Original languageEnglish
Pages (from-to)912-925
Number of pages14
JournalASHRAE Transactions
Issue numberPt 2
Publication statusPublished - 1995 Dec 1
EventProceedings of the 1995 ASHRAE Annual Meeting - San Diego, CA, USA
Duration: 1995 Jun 241995 Jun 28

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering


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