Movement of CO₂ Concentration in the Room

Abstract:

CO₂ concentration in rooms, where we spend most of our lives, has become a problem that is solved by ventilation. In buildings, where is the ventilation additionally implemented, has become a problem with distribution systems. Between professionals is solved system so called “Cascade ventilation”, where is enough to incriminated room was at the junction of the inlet and exhaust air. If this assumption will be confirmed, it will facilitate the management of air distribution systems, especially in the case of renovations. Therefore would be no implementation of ceilings, which constitute a considerable part of the budget. Cascade system is based on the principle of Dalton's Law of partial pressures. For test of this theory has been used room, where is located 8 CO₂ sensors. Here was monitored the movement of CO₂ concentration from resources (human) and its distribution through the room in horizontal and vertical direction. The experiment was also simplified simulated in a computer program ANSYS Fluent and simulation results are compared with measured values.

• Periodical: Applied Mechanics and Materials (Volume 824)
• Pages: 243-250
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.824.243
• Online since: January 2016
• Authors: Martina Vodičková, Zdeněk Jaroň, Veronika Šípková
• Keywords: Air Flow, Carbon Dioxide, Concentration of CO₂, Simulation, Ventilation

References

[1] Decree 268/2009 About technical requirements for buildings/O technických požadavcích na stavby. Collection of Laws CZ/Sbírka zákonů ČR. 2009. [Czech].

[2] R. Šubrt and collective. Study: CO2 concentrations in Czech schools dramatically exceeds the norm / Studie: Koncentrace CO2 v českých školách dramaticky převyšuje normu. Britské listy [online]. 2015 [cit. 2015-08-15]. Available from: http: /blisty. cz/art/76414. html [Czech].

[3] J. Hazucha, J. Bárta. Passive House Centre. Mechanical ventilation with heat recovery in buildings for education / Nucené větrání s možností rekuperace odpadního tepla v objektech pro vzdělávání [online]. 2010 [cit. 2015-08-15]. Available from: http: /www. opzp2007-2013. cz/soubor-ke-stazeni/15/4679-08-2009-vetrani-5web. pdf. [Czech].

[4] N. Muscatiello, A. Mccarthy, C. Kielb, W. -H. Hsu, S. -A. Hwang, S. Lin., Classroom conditions and CO2 concentrations and teacher health symptom reporting in 10 New York State Schools. In: Indoor air, vol. 25, no. 2, pp.157-167.

DOI: 10.1111/ina.12136

[5] X. Zhang, P. Wargocki, Z. Lian, Literature survey on the effects of pure carbon dioxide on health, comfort and performance. In: Indoor Air 2014 - 13th International Conference on Indoor Air Quality and Climate, p.1009.

DOI: 10.1111/ina.12284

[6] Protronix. Are you working in a healthy environment? Measurement of carbon dioxide in buildings /Pracujete ve zdravém prostředí? Měření oxidu uhličitého v budovách [online]. 2009 [cit. 2015-08-15]. Available from: http: /vetrani. tzb-info. cz/vnitrni-prostredi/5827-pracujete-ve-zdravem-prostredi. [Czech].

[7] V. Šípková, Z. Galda, J. Labudek, D. Hibler. Influence of Plants on the CO2 Concentration in the Passive House. In: Advanced Materials Research. Ostrava, 2014, pp.524-528.

DOI: 10.4028/www.scientific.net/amr.1020.524

[8] Z. Galda, J. Labudek, V. Šípková. Experimental Measurement of the CO2 content in a passive home during a simulated air-conditioning power outage. In: Applied Mechanics and Materials. Durnten-Zurich: Trans Tech Publications, 2015, pp.1187-1190.

DOI: 10.4028/www.scientific.net/amm.752-753.1187