In what way does natural ventilation differ from hydraulic ventilation?

Natural ventilation relies on external wind patterns and buoyancy effects to create airflow within a space. This method allows fresh air to enter a building while simultaneously expelling stale air without the use of mechanical assistance. External factors, such as the wind direction and temperature differences between indoor and outdoor air, play a significant role in this process.

In contrast, hydraulic ventilation involves the use of water and is often initiated with the help of mechanical systems to produce airflow through fogging or spraying water. This method depends heavily on artificial means rather than natural atmospheric conditions to manage air quality and temperature within a structure.

By understanding that natural ventilation harnesses wind and temperature to facilitate airflow, it becomes clear how it fundamentally differs from hydraulic ventilation in its approach and mechanisms of action.