Markov, Detelin G.

Melikov, Arsen Krikor

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

Online Research Database In Technology

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

http://orbit.dtu.dk/ws/files/102384523/Novel_approach_for_evaluation_of_air_change.pdf

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

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Online Research Database In Technology