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Use of personalized ventilation for improving health, comfort, and performance at high room temperature and humidity

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Authors:
  • Melikov, Arsen Krikor ;
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    Orcid logo0000-0003-0200-6046
    Department of Civil Engineering, Technical University of Denmark
  • Skwarczynski, Mariusz ;
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    Department of Civil Engineering, Technical University of Denmark
  • Kaczmarczyk, J. ;
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    Silesian University of Technology
  • Zabecky, J.
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    Technical University of Denmark
DOI:
10.1111/ina.12012
Abstract:
The effect of personalized ventilation (PV) on people's health, comfort, and performance in a warm and humid environment (26 and 28°C at 70% relative humidity) was studied and compared with their responses in a comfortable environment (23°C and 40% relative humidity). Thirty subjects participated in five 4-h experiments in a climate chamber. Under the conditions with PV, the subjects were able to control the rate and direction of the supplied personalized flow of clean air. Subjective responses were collected through questionnaires. During all exposures, the subjects were occupied with tasks used to assess their performance. Objective measures of tear film stability, concentration of stress biomarkers in saliva, and eye blinking rate were taken. Using PV significantly improved the perceived air quality (PAQ) and thermal sensation and decreased the intensity of Sick Building Syndrome (SBS) symptoms to those prevailing in a comfortable room environment without PV. Self-estimated and objectively measured performance was improved. Increasing the temperature and relative humidity, but not the use of PV, significantly decreased tear film quality and the concentration of salivary alpha-amylase, indicating lower mental arousal and alertness. The use of PV improved tear film stability as compared to that in a warm environment without PV.
Type:
Journal article
Language:
English
Published in:
Indoor Air, 2013, Vol 23, Issue 3, p. 250-263
Keywords:
Hot and humid environment; Personalized ventilation; Individual control; health; Comfort; Performance
Main Research Area:
Science/technology
Publication Status:
Published
Review type:
Peer Review
Submission year:
2014
Scientific Level:
Scientific
ID:
240845602

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