ESTIMATION OF OCCUPANTS' CARBON DIOXIDE PRODUCTION RATE FOR MEASUREMENT OF VENTILATION

CO2 included in exhaled breath is often used as a tracer gas when estimation of ventilation aspect in buildings with occupants is performed. In Japan, CO2 production rate written in JIS A 1406, which revised in 1974, has been referred for the estimation. Based on exhaled breath data obtained by using Douglas bag method with approximately total 170 points, equations for recent Japanese CO2 production rate included in exhaled breath are developed. Moreover, an equation, whose variables are occupants' height & weight, gender, age and Met, is used for estimating ventilation aspects in single zone with occupants aiming at accuracy testing compared with using the JIS and ASTM D6245-12.