Energy saving possibilities with cooled-ceiling systems

Jianlei Niu, J. v.d. Kooi, H. v.d. Rhee

Research output: Journal article publicationJournal articleAcademic researchpeer-review

96 Citations (Scopus)


Based on hour-by-hour simulation studies, this paper presents the annual energy consumption characteristics of water-panel type cooled-ceiling systems in comparison with conventional all-air systems. In particular, some unique energy saving measures associated with cooled-ceiling systems are numerically studied. The results indicate that a cooled-ceiling system can save much of the fan energy required in all-air systems, and that in the temperate Dutch climate, the system has a compatible energy performance with a VAV (variable air volume) system for office-building cooling purposes. The energy saving possibilities studied include using ceiling water to pre- or re-heat ventilation air and using a cooling tower for free cooling. The paper also demonstrates the possibilities of using a simulation technique to estimate non-conventional energy efficient system designs.
Original languageEnglish
Pages (from-to)147-158
Number of pages12
JournalEnergy and Buildings
Issue number2
Publication statusPublished - 1 Jan 1995
Externally publishedYes


  • Cooled-ceiling systems
  • Energy savings

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanical Engineering
  • Electrical and Electronic Engineering


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