Numerical investigation of diffuse ceiling ventilation in an office under different operating conditions

Christian Anker Hviid, Steffen Petersen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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Diffuse ceiling ventilation is a novel air distribution device that combines the suspended acoustic ceiling with ventilation supply. A diffuse ceiling distributes the supply air above the acoustic tiles and has proven performance in both laboratory and class room experiments. This paper is a numerical study of the performance of a six person office equipped with diffuse ventilation ceiling. In total six extreme, yet realistic, operation scenarios were simulated to study the performance including different occupancy, ventilation rates and supply air temperatures. The performance was studied with regard to air change efficiency, air movements, temperatures and stratification. In all scenarios the ceiling performed satisfactorily.
Original languageEnglish
Title of host publicationProceedings of the 10th Nordic Symposium on Building Physics
EditorsJesper Arfvidsson, Lars-Erik Harderup, Anders Kumlin, Bitte Rosencrantz
Number of pages8
PublisherLund University
Publication date2014
Article number113
ISBN (Electronic)978-91-88722-53-9
Publication statusPublished - 2014
Event10th Nordic Symposium on Building Physics - Lund, Sweden
Duration: 15 Jun 201419 Jun 2014
Conference number: 10


Conference10th Nordic Symposium on Building Physics
Internet address


  • Diffuse ceiling ventilation
  • Ventilation efficiency
  • Ventilation
  • Draught
  • CFD


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