Discussions of CO 2 in relation to IAQ and ventilation have continued to evolve, focusing on the impacts of CO 2 on building occupants, how CO 2 concentrations relate to occupant perception of bioeffluents, the use of CO 2 to control outdoor air ventilation rates, and its use for estimating building ventilation rates. 1 About one hundred years later, von Pettenkofer suggested that bioeffluents from human occupants were causing indoor air problems, not CO 2. Indoor CO 2 concentrations have been prominent in discussions of building ventilation and indoor air quality (IAQ) since the 18th century when Lavoisier suggested that CO 2 build-up rather than oxygen depletion was responsible for “bad air” indoors. This paper provides updated methods and data for estimating CO 2 generation rates, which will improve the application of indoor CO 2 concentrations. However, the CO 2 generation rates employed currently are based on calculation methods and data that are several decades old, and which do not account for individual occupant characteristics such as age, sex, and body size. Indoor carbon dioxide concentrations have many applications in the fields of ventilation and indoor air quality, many of which require CO 2 generation rates for the building occupants.Using this approach and more recent data on body mass and physical activity, values of CO 2 generation rates from building occupants are presented along with the variability that may occur based on body mass and activity data.
![carbon dioxide formula carbon dioxide formula](https://s3mn.mnimgs.com/img/shared/content_ck_images/ck_5ac0a2a074211.jpg)
Based on this information, a new approach to estimating CO 2 generation rates is presented, which is based on the described concepts from the fields of human metabolism and exercise physiology. This paper reviews how CO 2 generation rates have been estimated in the past and discusses how they can be characterized more accurately.
![carbon dioxide formula carbon dioxide formula](https://geometryofmolecules.com/wp-content/uploads/2017/09/co2-structural-formula.png)
However, CO 2 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. Many of these applications require rates of CO 2 generation from the building occupants, which are currently based on approaches and data that are several decades old. Indoor carbon dioxide (CO 2) concentrations have been used for decades to characterize building ventilation and indoor air quality.