Carbon dioxide generation rates for building occupants.
Andrew K. Persily,L. de Jonge +1 more
TL;DR: A new approach to estimating CO2 generation rates is presented, which is based on the described concepts from the fields of human metabolism and exercise physiology, which relate these rates to body size and composition, diet, and level of physical activity.
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Abstract: Indoor carbon dioxide (CO2) concentrations have been used for decades to characterize building ventilation and indoor air quality. Many of these applications require rates of CO2 generation from the building occupants, which are currently based on approaches and data that are several decades old. However, CO2 generation rates can be derived from well-established concepts within the fields of human metabolism and exercise physiology, which relate these rates to body size and composition, diet, and level of physical activity. This paper reviews how CO2 generation rates have been estimated in the past and discusses how they can be characterized more accurately. Based on this information, a new approach to estimating CO2 generation rates is presented, which is based on the described concepts from the fields of human metabolism and exercise physiology. Using this approach and more recent data on body mass and physical activity, values of CO2 generation rates from building occupants are presented along with the variability that may occur based on body mass and activity data.
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Citations
An Approach for Assessing Human Respiration CO<sub>2</sub> Emissions Using Radiocarbon Measurements and Bottom‐Up Data Sets
Peng Wang,Weijian Zhou,Zhenchuan Niu,Da Huo,Jie Zhou,H. Li,Peng Cheng,Shugang Wu,Xiaohu Xiong,Ning Chen +9 more
TL;DR: The respiratory CO 2 emission rates (CERs) of Chinese people are characterized, and the CO 2hr emissions in Beijing are estimated. The results show that males and females have similar age trends in CERs, but the gender difference is significant. The CO 2hr emissions are about 22.2 ± 0.6 kt CO 2 per day, which is equivalent to 7.5% of daily CO 2ff emissions in winter.
Direct estimates of absolute ventilation and estimated Mycobacterium tuberculosis transmission risk in clinics in South Africa
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TL;DR: In this paper , the authors measured natural ventilation in clinics in KwaZulu-Natal and Western Cape provinces, South Africa, then used these measurements to estimate Mycobacterium tuberculosis transmission risk.
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Simulating indoor inorganic aerosols of outdoor origin with the inorganic aerosol thermodynamic equilibrium model ISORROPIA.
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