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  Updated: 5 Mar 2018
 

 

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AIR QUALITY - STANDARD, AIR HEALTH INDICATOR

   

Best choice against poor indoor odor and "sick buildings"

VOC air quality detectors are important for the indoor climate in buildings.
Below you will find a summary of what they can achieve.

Imagine a commercial building where the ventilation system is controlled by VOC.
During evening hours, the presence and hence the ventilation levels are very low because there are only cleaning personel and guards in the building.

If the cleaning personel start using chemicals that are sensitive to the detector, a higher level of ventilation activated by the detectors until all contaminants are completely removed from the building.

Detectors thus measure different things and have different applications. Make sure that the correct sensor is selected for each application.

A CO2 sensor is used to control the ventilation. They detect actual presence in a space.

Air quality sensors can regulate ventilation and detect sensor-specific contaminants and actual presence in the space.

Each method will result in completely different ventilation strategies and energy effects.

The cases, reported in "sick buildings" vary a great deal, but seem to be valid for:

  • Irritation of eyes, nose and throat.

  • A feeling of dryness of mucous membranes and skin.

  • Skin redness

  • Mental fatigue

  • Faint but persistent odor

The number of identifiable components in indoor air can be up to several hundred.
But there is always a group of about 20 to 30 substances that are found in most samples, while the others occur only in isolated cases.
Several of the materials identified in indoor air have also been found in emissions from building materials.

It has also been shown that in the residential environment it is mainly construction and furnishing materials that emit organic compounds into indoor air.

Chemical Indoor air pollution:

  • Construction and furnishing materials

  • Tobacco smoking

  • Combustion indoor heating, wood or gas stove

  • Solvents

  • Exhaust fumes from cars and combustion gases from outside.

"Sick Buildings" are essentially a physical environmental problem and not a psychological one.

Sense perceptions dominate among the symptoms in the syndrome of "sick buildings".

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