Thermal comfort zone of radiant cooling system in residential buildings in hot and humid regions

Mika Saito*, Moeko Tagawa, Chaichang Chen, Yuka Sakurai, Tomoko Matsubasa, Sachiko Kono, Shinichi Tanabe

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The purpose of this study was to investigate the effects of thermal conditions created by radiant cooling systems on thermal sensation and then to propose comfortable conditions in residential buildings in hot and humid climates. The study includes a subjective experiment and a thermal manikin experiment, which were conducted in model living rooms inside a climate chamber. Both experiments were conducted in 18 different thermal conditions. The results suggest that the influence of constitution cannot be ignored because the psychological response was extremely different from subjects with cold constitution and those without it. Comfortable conditions were determined based on thermal sensation, skin temperature, and sensible heat loss, then it is proposed that the comfortable range of operative temperature considering differences in constitution is 25.7°C to 28.7°C. Moreover, it was suggested that thermal comfort was enhanced by using floor cooling and radiator even under hot environment.

Original languageEnglish
Title of host publicationHealthy Buildings Europe 2017
PublisherInternational Society of Indoor Air Quality and Climate
ISBN (Print)9788379472604
Publication statusPublished - 2017 Jan 1
Externally publishedYes
EventHealthy Buildings Europe 2017, HB 2017 - Lublin, Poland
Duration: 2017 Jul 22017 Jul 5


OtherHealthy Buildings Europe 2017, HB 2017


  • Cold Constitution
  • Comfortable Condition
  • Floor Cooling
  • Radiator
  • Subjective Experiment

ASJC Scopus subject areas

  • Civil and Structural Engineering


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