Finding F-0460

“The highest daily mean of estimated ventilation rates, including infiltration, was 0.61 ACH on December 13 and the lowest one was 0.22 ACH August 14.”

Estimation of infiltration and ventilation rates in an office room with 145mm-diameter… (2023). Page 12. CKB 0348

Structure

Factor: Air exchange rate (air changes per hour)
Population: office workers (3-5 regular occupants)
Setting: office, KR
Study design: measurement study in one office test room in Seoul with 145 mm circular window openings: every-minute indoor and outdoor CO2, temperature, humidity and PM2.5 from August to December, infiltration and ventilation rates estimated from occupant-generated CO2 decay during unoccupied periods (class 4)
Effect: other 0.61
Averaging time: daily mean, highest day
Caveat: rate estimated from occupant-generated CO2 decay; highest daily mean recorded as measure other

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