Exhaled breath

Accuracy Improvement for Estimating Indoor Carbon Dioxide Concentration Produced by Occupants

Submitted by on Wed, 04/17/2019 - 11:53

Carbon dioxide included in exhaled breath is often used as a tracer gas when estimation of ventilation aspect in buildings with occupants is performed. Indoor carbon dioxide concentration is also adopted evaluation of ventilation commonly. It is needed for these investigations to grasp occupants’ carbon dioxide production rate accurately. 

Derivation of equation for personal carbon dioxide in exhaled breath intended to estimation of building ventilation

Submitted by on Tue, 01/27/2015 - 16:13

Carbon dioxide included in exhaled breath is often used as a tracer gas when estimation of ventilation aspect in buildings with occupants is performed. Carbon dioxide produced by occupants is the key for the estimation. JIS A 1406 and ASTM D6245-12 refer personal carbon dioxide production rate. However JIS does not take into account personal attribute like as body height and weight. On the other hand, ASTM does not take into account gender difference and based on average westerner adult data.