Airflow control for personal air-conditioning in a partly unoccupied zone using a multi-flow ceiling cassette type packaged air-conditioner

Ryo Ishiguro, Tomoyuki Chikamoto, Satoshi Hashimoto, Ryozo Inada, Atsushi Nishino, Takashi Akimoto

Research output: Contribution to journalArticle

1 Citation (Scopus)


There are various demands for air-conditioning in each office space resulting from the variability of thermal distribution caused by a bias of heat sources. Furthermore, individual demands on the thermal environment are diverse. Therefore, it is difficult to satisfy all demands using conventional air-conditioning systems since these assume perfect mixing. Instead, demand may vary with the result that some spaces could be excessively or unnecessarily cooled. This paper examines an airflow and temperature control for personal air-conditioning. This is aimed at providing personal comfort on demand while not unnecessarily cooling unoccupied zones. The method utilizes a multi-flow ceiling cassette type packaged air-conditioner. In this study, thermal comfort and energy performance were analysed using CFD (Computational Fluid Dynamics). From this a personal air control and thermal comfort strategy was developed.

Original languageEnglish
Pages (from-to)393-403
Number of pages11
JournalInternational Journal of Ventilation
Issue number4
Publication statusPublished - 2011 Mar



  • Airflow control for unoccupied zone
  • Personal air-conditioning
  • Thermal comfort

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Building and Construction

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