Responses to Human Bioeffluents at Levels Recommended by Ventilation Standards

Xiaojing Zhang*, Pawel Wargocki, Zhiwei Lian, Jingchao Xie, Jiaping Liu

*Corresponding author for this work

Research output: Contribution to journalConference articleResearchpeer-review

148 Downloads (Pure)


The purpose of this study was to examine whether exposure to human bioeffluents, at the levels recommended by the current ventilation standards, would cause any effects on humans. Ten subjects were exposed in a low-emission stainless-steel climate chamber for 4.25 hours. The outdoor air supply rate was set to 33 or 4 l/s per person, creating two levels of bioeffluents with carbon dioxide (CO2) at 500 or 1600 ppm. Subjective ratings were collected, cognitive performance was examined and physiological responses were monitored. The results show that exposures to human bioeffluents at ventilation rate of 4 l/s per person caused sensory discomfort of visitors, reduced pNN50 (a domain of ECG measurement), but did not produce negative effects on cognitive performance or health symptoms.

Original languageEnglish
JournalProcedia Engineering
Pages (from-to)609-614
Publication statusPublished - 2017
Event10th International Symposium on Heating, Ventilation and Air Conditioning - Jinan, China
Duration: 19 Oct 201722 Oct 2017
Conference number: 10


Conference10th International Symposium on Heating, Ventilation and Air Conditioning


  • Acute health symptoms
  • Cognitive performance
  • Human bioeffluents
  • Perceived air quality
  • Physiological reactions

Cite this