Indoor climate in rooms with cooled ceiling systems

Jianlei Niu, J. v d Kooi

Research output: Journal article publicationJournal articleAcademic researchpeer-review

55 Citations (Scopus)


By using thermal dynamics simulation and CFD (computational fluid dynamics) techniques, thermal comfort and indoor contaminant distributions are analysed for a room with: (1) a conventional displacement ventilation system, (2) a cooled ceiling with displacement ventilation system, and (3) a cooled ceiling with ceiling air supply system. The numerical simulation results indicate that a cooled ceiling reduces the vertical temperature gradients while still maintaining the ventilation effectiveness much higher than one at a load of nearly 50 W/m2floor area. By comparison, maximum cooling capacities of the three systems are discussed, specifically in respect to their thermal comfort performances.
Original languageEnglish
Pages (from-to)283-290
Number of pages8
JournalBuilding and Environment
Issue number3
Publication statusPublished - 1 Jan 1994
Externally publishedYes

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Environmental Engineering
  • Geography, Planning and Development
  • General Engineering


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