Why Monitor CO₂ Concentration?

People and Carbon Dioxide

Through the process of breathing, inhaled oxygen is converted into Carbon Dioxide. The exhaled air of an adult person contains on average around 45 to 50 thousand ppm CO₂ (approximately 100 times higher concentration than in outdoor air). Without adequate ventilation, the concentration of CO₂ logically increases in enclosed spaces.

The level of Carbon Dioxide concentration in the air can therefore be considered an important indicator of air quality in enclosed spaces.

Although Carbon Dioxide is invisible and odorless, its elevated levels are evident. Symptoms include fatigue and decreased concentration ability, headaches… Especially in spaces with a larger number of people, such as schools, offices, theaters, and healthcare facilities, the negative impact of increased CO₂ concentration in the air is very noticeable.

The recommended concentration of CO₂ in the air should be maintained at or around 1,000 ppm.

So How to Ventilate?

Current technologies allow for easy and continuous measurement of CO₂ concentration. Based on the obtained values, ventilation systems can be controlled to ensure good air quality and reduce energy consumption for heating, ventilation, and air conditioning of indoor spaces.

Ventilation systems can thus utilize the measured CO₂ concentration values for continuous control of their performance, maintaining a comfortable indoor environment. Such systems are particularly useful for spaces with a variable number of people. The ventilation performance is then continuously adjusted based on the number of people present in the ventilated area.

Based on the measurement of CO₂ concentration in the air, modern ventilation systems can ensure optimal air quality in ventilated spaces regardless of the number of people present.