Responses to Human Bioeffluents at Levels Recommended by Ventilation Standards

Xiaojing Zhang; Pawel Wargocki; Zhiwei Lian; Jingchao Xie; Jiaping Liu

doi:10.1016/j.proeng.2017.10.415

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 journal › Conference article › Research › peer-review

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Abstract

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 language	English
Journal	Procedia Engineering
Volume	205
Pages (from-to)	609-614
ISSN	1877-7058
DOIs	https://doi.org/10.1016/j.proeng.2017.10.415
Publication status	Published - 2017
Event	10th International Symposium on Heating, Ventilation and Air Conditioning - Jinan, China Duration: 19 Oct 2017 → 22 Oct 2017 Conference number: 10

Conference

Conference	10th International Symposium on Heating, Ventilation and Air Conditioning
Number	10
Country/Territory	China
City	Jinan
Period	19/10/2017 → 22/10/2017

Keywords

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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.proeng.2017.10.415

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title = "Responses to Human Bioeffluents at Levels Recommended by Ventilation Standards",

abstract = "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.",

keywords = "Acute health symptoms, Cognitive performance, Human bioeffluents, Perceived air quality, Physiological reactions",

author = "Xiaojing Zhang and Pawel Wargocki and Zhiwei Lian and Jingchao Xie and Jiaping Liu",

year = "2017",

doi = "10.1016/j.proeng.2017.10.415",

language = "English",

volume = "205",

pages = "609--614",

journal = "Procedia Engineering",

issn = "1877-7058",

publisher = "Elsevier",

note = "10th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC2017 ; Conference date: 19-10-2017 Through 22-10-2017",

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TY - GEN

T1 - Responses to Human Bioeffluents at Levels Recommended by Ventilation Standards

AU - Zhang, Xiaojing

AU - Wargocki, Pawel

AU - Lian, Zhiwei

AU - Xie, Jingchao

AU - Liu, Jiaping

N1 - Conference code: 10

PY - 2017

Y1 - 2017

N2 - 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.

AB - 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.

KW - Acute health symptoms

KW - Cognitive performance

KW - Human bioeffluents

KW - Perceived air quality

KW - Physiological reactions

U2 - 10.1016/j.proeng.2017.10.415

DO - 10.1016/j.proeng.2017.10.415

M3 - Conference article

AN - SCOPUS:85033400082

SN - 1877-7058

VL - 205

SP - 609

EP - 614

JO - Procedia Engineering

JF - Procedia Engineering

T2 - 10th International Symposium on Heating, Ventilation and Air Conditioning

Y2 - 19 October 2017 through 22 October 2017

ER -

Responses to Human Bioeffluents at Levels Recommended by Ventilation Standards

Abstract

Conference

Keywords

UN SDGs

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