What is passive ventilation

Passive ventilation means allowing fresh air into a building space while at the same time removing stale air.

It does this through passive means — using forces such as wind and pressure differences instead of mechanical ventilation systems or fans.

There are different methods of passive or naturally ventilating a building. But the most common is the opening and closing of windows. This can be fully automated, with strategically placed windows and vents providing air supply and exhaust.
 

 

 

 

Passive ventilation for a better indoor climate

You have for sure experienced the effects of excessive CO2 in a building — a stuffy environment makes it difficult to concentrate and hard to remain alert and focused.

For schools and other educational establishments this is an area of great concern, and studies have shown that students in a naturally ventilated classroom achieve significantly better results.

 

Reduced energy consumption

Passive ventilation regulates the indoor climate by a controlled air flow through the windows.

Compared to mechanical ventilation natural ventilation uses only a small amount of energy when the windows open and close.

A head to head comparison shows that natural ventilation has a 40% lower CO2 emission than a system with mechanical ventilation.

Further information

Natural ventilation by Wikepedia

Natural ventilation by WBDG

 

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