Data Insights #1: The colder it's outside, the worse the air gets inside

Data Insights #1: The colder it's outside, the worse the air gets inside

It's a well-known fact that staying indoors for a long period of time without airing the building may cause tiredness and a decrease in productivity. Still, a lot of households and offices don't ventilate often enough, when it's cold outside, in order to avoid high CO2 consistency in the air. Conrad Connect has identified a correlation between indoor CO2 and outdoor temperature, which proves exactly this fact.

And not only the CO2 content in the air can be a problem in winter, also the humidity is often higher inside, when it is cold - water drops on the windows, up to mold can be the result. But why is the right airing during winter a challenge for so many offices and households? Whether it's because the one who opens the windows every two hours and lets the cuddly heating air escape, is being attacked, or it simply gets forgotten to air regularly, we can not say.

However, we can suggest a few automated projects from Conrad Connect which can help you maintain fresh air quality indoors and stay healthy during winter times.

data insights
data insights

Ventilate properly during the cold season

1. Ventilation system CO2 control

As soon as the CO2 content measured in one or more rooms exceeds 800 ppm, the ventilation system, which is plugged in via a smart socket, is activated. If the CO2 content in each room falls below 500 ppm, the ventilation system is switched off again.

2. CO2 control over color lamp

From green to red: A smart lamp uses the traffic light colors to show the CO2 status in the room and reminds you to let some fresh air in.

3. SMS, warning lamp and automatic ventilation

If the CO2 content is excessive, an SMS will be sent with the reminder to open a window. At the same time a red light comes on and an intelligent socket is activated. Connected to it can be an air filter, a humidifier or fan connected. Once the air quality is better, the outlet is switched off again to save energy.

Observed a significant high negative correlation (R = -0.9, p-value < 2.2e-16) between outdoor temperature (y-axis) and indoor CO2 (x-axis). Meaning that lower the outside temperature, the higher the indoor CO2.

We observed a consistent significant negative correlation between indoor CO2 and outdoor temperature (when measured for the complete raw data or separately for different clusters of sensors). In other words, the indoor CO2 is higher when the outdoor temperature was lower.