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Effect of a contaminant source (CO2) on the air quality in a ventilated room

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  • Xamán, J.
  • Ortiz, A.
  • Álvarez, G.
  • Chávez, Y.

Abstract

In this paper, the results obtained from the analysis of the heat and mass transfer of an Air–Carbon Dioxide mixture (CO2) inside a ventilated cavity in laminar flow regime are presented. A ventilated cavity is usually the way to model a ventilated room as a first approximation. Different configurations of the cavity were analyzed regarding the location of the mixture outlet gap, in order to study the thermal behavior and the air quality inside the cavity considering three different values for the CO2 contaminant source (1000, 2000, 3000ppm). The air inlet gap is located on the lower side of the right vertical wall of the cavity. The inlet air velocity is a function of the Reynolds number (10≤Re≤500). The location of the mixture outlet gap was considered in four different positions: Case A, the outlet gap is on the upper side of the left wall; Case B, the outlet is on left of the top wall; Case C, the outlet is at the middle of the top wall and Case D, the outlet is on right of the top wall of the cavity. Based on the results, it was concluded that, from a thermal comfort point of view and air quality, configuration D shows the best performance in the interval 50≤Re≤100, with an exception for the case when a contaminant source of 1000ppm is present where configuration C is recommended. This study aims to provide guidelines for construction builders towards better design of buildings in order to achieve better air quality.

Suggested Citation

  • Xamán, J. & Ortiz, A. & Álvarez, G. & Chávez, Y., 2011. "Effect of a contaminant source (CO2) on the air quality in a ventilated room," Energy, Elsevier, vol. 36(5), pages 3302-3318.
    • Handle: RePEc:eee:energy:v:36:y:2011:i:5:p:3302-3318
    DOI: 10.1016/j.energy.2011.03.026
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    References listed on IDEAS

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    1. Radhi, H., 2010. "On the optimal selection of wall cladding system to reduce direct and indirect CO2 emissions," Energy, Elsevier, vol. 35(3), pages 1412-1424.
    2. Skeiker, Kamal, 2010. "Advanced software tool for the dynamic analysis of heat transfer in buildings; applications to Syria," Energy, Elsevier, vol. 35(6), pages 2603-2609.
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    Cited by:

    1. Biswal, Pratibha & Basak, Tanmay, 2014. "Bejan's heatlines and numerical visualization of convective heat flow in differentially heated enclosures with concave/convex side walls," Energy, Elsevier, vol. 64(C), pages 69-94.
    2. Roy, Monisha & Roy, S. & Basak, Tanmay, 2015. "Role of various moving walls on energy transfer rates via heat flow visualization during mixed convection in square cavities," Energy, Elsevier, vol. 82(C), pages 1-22.
    3. Turanjanin, Valentina & Vučićević, Biljana & Jovanović, Marina & Mirkov, Nikola & Lazović, Ivan, 2014. "Indoor CO2 measurements in Serbian schools and ventilation rate calculation," Energy, Elsevier, vol. 77(C), pages 290-296.
    4. Ling-Yi Chang & Tong-Bou Chang, 2023. "Air Conditioning Operation Strategies for Comfort and Indoor Air Quality in Taiwan’s Elementary Schools," Energies, MDPI, vol. 16(5), pages 1-19, March.
    5. Guillermo Efren Ovando-Chacon & Sandy Luz Ovando-Chacon & Abelardo Rodríguez-León & Mario Díaz-González, 2023. "Numerical Study of Indoor Air Quality in a University Professor’s Office," Sustainability, MDPI, vol. 15(5), pages 1-19, February.

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