Full-scale performance assessment of an innovative climate system for a classroom environment.

Johan M. Van Der Steen, Marcel G.L.C. Loomans, Noor Schellens, Jan L.M. Hensen

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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The indoor environmental quality (IEQ) of buildings affects health, productivity and wellbeing of its occupants. Simultaneously, energy consumption remains an issue of concern. IEQ in school buildings is critical, due to the high occupant density and influence of IEQ on student academic performance. In this research, the performance of an innovative system, combining ventilation and floor cooling/heating, is investigated through full-scale measurements in a mock-up and in a real classroom. Ventilation efficiency is assessed using the step-down tracer gas method. Thermal comfort focuses on local (non-uniform) thermal discomfort as this is most critical in a densely populated classroom. With increasing flow rates, the ventilation efficiency assessment shows a transition from displacement ventilation to mixing ventilation, and therefore reduced efficiency. Additionally, high flow rates can cause draught problems near supply grilles.

Original languageEnglish
Title of host publicationHealthy Buildings Europe 2017
PublisherInternational Society of Indoor Air Quality and Climate (ISIAQ)
ISBN (Print)9788379472604
Publication statusPublished - 2 Jul 2017
EventHealthy Buildings Europe 2017, HB 2017 - Lublin, Poland
Duration: 2 Jul 20175 Jul 2017


ConferenceHealthy Buildings Europe 2017, HB 2017
Abbreviated titleHB 2017 Europe


  • Indoor environmental quality
  • Local thermal discomfort
  • School
  • Ventilation efficiency


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