Novel approach for evaluation of air change rate in naturally ventilated occupied spaces based on metabolic CO2 time variation

Arsen Krikor Melikov, Detelin G. Markov

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    Abstract

    IAQ in many residential buildings relies on non-organized natural ventilation. Accurate evaluation of air change rate (ACR) in this situation is difficult due to the nature of the phenomenon - intermittent infiltration-exfiltration periods of mass exchange between the room air and the outdoor air at low rate. This paper describes a new approach for ACR evaluation in naturally ventilated occupied spaces. Actual metabolic CO2 time variation record in an interval of time is compared with the computed variation of metabolic CO2 for the same time interval under reference conditions: sleeping occupants, air-tight space, constant indoor pressure and temperature. The proposed approach for ACR evaluation can be applied to time intervals with any length, even with varying parameters of both indoor and outdoor air, in which metabolic CO2 generation rate is known and constant. This approach makes possible evaluation of very low ACH.
    Original languageEnglish
    Title of host publicationProceedings of Indoor Air 2014
    Number of pages8
    PublisherInternational Society of Indoor Air Quality and Climate
    Publication date2014
    Article numberPaper HP0883
    Publication statusPublished - 2014
    Event13th International Conference on Indoor Air Quality and Climate - University of Hong Kong, Hong Kong, Hong Kong
    Duration: 7 Jul 201412 Jul 2014
    Conference number: 13
    http://www.indoorair2014.org/

    Conference

    Conference13th International Conference on Indoor Air Quality and Climate
    Number13
    LocationUniversity of Hong Kong
    Country/TerritoryHong Kong
    CityHong Kong
    Period07/07/201412/07/2014
    Internet address

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