A method to estimate the amount of CO2 generated by building occupants since the early 1980s may be off by as much as 25%.
Researchers at the National Institute of Standards and Technology (NIST) and George Mason University say the old formula relies on old data and a method lacking scientific documentation. To help address the problem, the researchers developed a new computation method that uses well-established concepts from the study of human metabolism and exercise physiology.
The new method relates CO2 generation rates to body size and composition, diet, and level of physical activity. Researchers say this results in more accurate estimates of the CO2 generated by individuals, and by extension, an improved estimate of the concentration produced by a building’s entire occupant population.
Measurements of indoor carbon dioxide (CO2) concentrations are used to evaluate indoor air quality. CO2 metrics are strongly linked to the levels of contaminants, such as gases and particles, circulating in the air. This information can be used to control ventilation, which helps clean the air, and can reduce the need for heating and cooling.
Related Stories
Codes and Standards | Feb 17, 2017
New energy design guide for metal building systems now available
The second edition incorporates more recent IECC and ASHRAE standards.
Codes and Standards | Feb 14, 2017
Paper outlines how BREEAM credits can be used for WELL standard compliance
The paper provides guidance on how to streamline pursuit of dual certification.
Codes and Standards | Feb 14, 2017
Evidence mounts on health, productivity benefits of sustainable work spaces
High-performance green buildings are linked to better job performance.
Codes and Standards | Feb 13, 2017
Calif. commission approves ‘emergency’ balcony code changes
The changes apply to multifamily, hotels, state-owned buildings, and public schools.
Codes and Standards | Feb 9, 2017
Google-initiated program aims to get construction industry to use healthier building materials
Portico platform features a database of products ranked on how they disclose ingredients.
Codes and Standards | Feb 7, 2017
Newer structural standards mitigating earthquake impacts in Oklahoma
Buildings constructed in the last two decades are largely holding up to increased seismic activity.
Codes and Standards | Feb 6, 2017
New York State offers $36 million for energy efficiency on commercial buildings
Programs will provide money for both owners and renters.
Codes and Standards | Feb 6, 2017
New white paper on modular bathroom pods offers insight on best uses
When to use them, cost, and installation are issues that are explored.
Codes and Standards | Feb 3, 2017
Justice in Design initiative to explore how to design a modern jail
The report will inform design principles for New York City jails.
Codes and Standards | Feb 1, 2017
Massachusetts, Colorado, Illinois lead annual Top 10 States for LEED Green Building list
LEED for Building Operations and Maintenance the most popular rating system in top 10 states.
