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  2. Indoor air quality - Wikipedia

    en.wikipedia.org/wiki/Indoor_air_quality

    The UK standards for schools say that carbon dioxide levels of 800 ppm or lower indicate that the room is well-ventilated. [92] Regulations and standards from around the world show that CO 2 levels below 1000 ppm represent good IAQ, between 1000 and 1500 ppm represent moderate IAQ and greater than 1500 ppm represent poor IAQ. [88]

  3. Demand controlled ventilation - Wikipedia

    en.wikipedia.org/wiki/Demand_controlled_ventilation

    As the sensor reads the increasing amount of carbon dioxide levels in a space, the ventilation increases to dilute the levels. When the space is unoccupied, the sensor reads normal levels, and continues to supply the unoccupied airflow rate. This rate is determined by the building owner standards, along with the designer and ASHRAE Standard 62. ...

  4. Carbon dioxide inside can be harmful too - AOL

    www.aol.com/news/2015-11-09-carbon-dioxide...

    New studies show that CO2 inside buildings could be just as harmful as outside. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us ...

  5. Carbon dioxide in Earth's atmosphere - Wikipedia

    en.wikipedia.org/wiki/Carbon_dioxide_in_Earth's...

    Carbon dioxide observations from 2008 to 2017 showing the seasonal variations and the difference between northern and southern hemispheres. The concentrations of carbon dioxide in the atmosphere are expressed as parts per million by volume (abbreviated as ppmv, or ppm(v), or just ppm).

  6. Household air pollution - Wikipedia

    en.wikipedia.org/wiki/Household_air_pollution

    For instance, electric stoves are cited as emission-free 'clean' alternatives to biomass at the household level. [ 30 ] However, negative externalities still exist – ambient air pollution in areas near power plants still poses a health risk, while the generation of electricity in India and China (countries largely dependent on coal for ...

  7. Control of ventilation - Wikipedia

    en.wikipedia.org/wiki/Control_of_ventilation

    Under most conditions, the partial pressure of carbon dioxide (PCO 2), or concentration of carbon dioxide, controls the respiratory rate. The peripheral chemoreceptors that detect changes in the levels of oxygen and carbon dioxide are located in the arterial aortic bodies and the carotid bodies . [ 2 ]

  8. I measured CO2 levels on a plane: It showed me when I was ...

    www.aol.com/lifestyle/took-co2-detector-flight...

    Air travel amid COVID outbreaks can be unnerving but a carbon dioxide detector can help gauge risks. Here's what a CO2 detector showed on a flight.

  9. File:Co2-temperature-records.svg - Wikipedia

    en.wikipedia.org/wiki/File:Co2-temperature...

    English: This figure shows historical carbon dioxide (right axis) and reconstructed temperature (as a difference from the mean temperature for the last 100 years) records based on Antarctic ice cores, providing data for the last 800,000 years. This figure was produced by Leland McInnes using python and matplotlib and is licensed under the GFDL ...