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Improved perceived air quality applying MOS sensor technology

: Herberger, S.; Herold, M.; Ulmer, H.; Burdack-Freitag, A.; Mayer, F.

Strøm-Tejsen, P. ; International Society of Indoor Air Quality and Climate -ISIAQ-, Ottawa:
Indoor Air 2008, the 11th International Conference on Indoor Air Quality and Climate. CD-ROM : 17th August to 22nd August 2008, Copenhagen, Denmark
Lyngby: Technical University of Denmark, Department of Manufacturing Engineering and Management, 2008
ISBN: 978-87-7877-270-1
Paper 785, 8 pp.
International Conference on Indoor Air Quality and Climate <11, 2008, Copenhagen>
Conference Paper
Fraunhofer IBP ()

Due to increasing interest in IAQ monitoring and DCV aiming at improved perceived air quality, the objective of this work was to develop a reliable, low cost module based on a single micro-machined MOS gas sensor. Most attempts to implement DCV so far rely on the quantification of CO2 as a tracer of human occupancy. Real-life data, applying MOS gas sensor, GC/MS and GCO were recorded to detect VOCs and identify odorous compounds in indoor air generated by humans and bring out correlation of MOS gas sensor data with perceived air quality. A good correlation with TVOCs as well as specific quantifiable VOCs could be observed. Implying a suitable evaluation algorithm, a perfect correlation of predicted with measured CO2 concentrations could be achieved. Broad sensitivity of MOS gas sensors enables monitoring the overall IAQ beyond CO2 by achieving a high correlation with CO2 leading to improved air quality by DCV.