O2 IT Services (O2 ITS), a subsidiary of O2 Czech Republic, together with several partners is launching the Smart City pilot project "Environment - Healthy School" in the area of air quality measurement. It draws attention to the issue of optimal environment in schools and its impact on the health and attention of students and teachers. The project was launched in February this year and will run for several months.
Combined sensors are designed for measuring indoor air quality, where they allow the measurement of several physical variables simultaneously. According to the measured values of the monitored variables it is then possible to control ventilation units. The advantage of combined air quality sensors is very simple and economically inexpensive installation in air distribution systems.
Humidity is a meteorological element that describes the amount of water vapour in the air, which is mainly contained in the lower atmosphere and is produced by evaporation from large bodies of water, soil, plants, animals, etc.
The company took air quality measurements in a bedroom where several people were sleeping. The measurements were taken at different ventilation levels. However, in neither case were the results satisfactory. Read the full article to find out why you can't get to sleep during the night and wake up tired in the morning.
Low-energy houses have been the focus of attention for many years. Their development is of course linked to the increase in energy prices that can be observed in recent years. It is generally stated that the savings in heating costs are approximately half in a low-energy house compared to a conventional building.
Indoor air quality is nowadays assessed, if at all, by temperature, humidity and carbon dioxide (CO2) concentration. However, people often complain about air quality even though all these indicators are at optimum levels. So what substances further degrade air quality?
What is the difference between uncontrolled ventilation and VAV (variable air volume) and DCV (demand controlled ventilation)? The article describes the advantages, disadvantages and operation of these systems.
The VAV system is explained using a specific example in our company. The initial set-up of the system and its several years of operation are described. The ventilation is regulated by air quality sensors, which are manufactured in-house.
Our company has conducted surveys in the nursery, school and office. We placed air quality sensors in the classrooms and office. Where were the carbon dioxide readings the worst? You may not be surprised by the results, but is it okay for children to spend so much time in enclosed rooms where the air quality is often alarming?
The survey we conducted in bedrooms shows that even at night the air quality is not better, but rather worse. This means that we are breathing poor quality air for more than half of the day. Do you think that's okay?
Getting lost in technical terms related to measuring the concentration of various substances in the air? Sensors for measuring CO2, CO, VOCs etc. work on three basic principles, the most commonly used of which is the NDIR principle. What does NDIR mean and how do sensors work on this and other principles?
The heater is always on and the window above it is open because the room is unbreathable! Or a closed window, so that the heating is not unnecessary, but the air is such that it is impossible to be in the room for long periods of time. Do you know these situations? And do you know what smart ventilation is?
CO leaks have been a much discussed topic recently. Many people have died from carbon monoxide poisoning, despite the fact that it would have taken so little - the purchase of a home CO sensor that could alert homeowners to this dangerous gas. In the section "Products - we inform" you will find articles related to this topic.
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