Throughout history, buildings used natural ventilation. However, with the increased drive for energy efficiency, the science of natural ventilation has become vastly common again. 
Depending on the design of the building, the local climate, and the purpose of the building, natural ventilation might be an efficient way to keep the room at a comfortable temperature. It also reduces energy consumption and maintenance.
When ventilating a building, there is of course a cycle of air movement. This cycle feeds fresh air into the interior and lets out the existing air. This air circuit is intended to take advantage of the pressure changes that occur in the air due to differences in humidity and temperature. The natural flow of air in, out and within the structure is operated through the cleverly placed entry and exit air vents. This supports better air movement throughout the room.
How natural ventilation controls temperature and increases air movement
The warm air inside a construction has a lower density compared to the cool outside air. This difference allows the warm air inside the building to rise naturally to the ceiling. A gravity ventilation system or natural ventilation makes this air movement simply by removing the major obstacle in its path, the ceiling. There are fans on the roof of the building to allow large amounts of warm air to escape. These fans allow the maximum amount of air to evacuate the building while preventing rain, animals or dirt from entering. However, every now and then, ventilationsrengöring Stockholm is needed.
When the temperature outside the building rises and falls, the natural ventilation system can easily regulate the inside temperature by letting the air out as needed. An increase in the speed of the incoming supply air through the wall or a strong breeze over the top of the fan often lead to an increase in air movement in the building.
Use of natural ventilation
First of all, it is important to understand the science of a natural ventilation system. A naturally ventilated building is a very delicate and complicated process. A ventilation engineer needs to consider several factors when planning a new ventilation system.
Every opening within a building affects the internal airflow and thus the internal temperature. Air intake and exhaust openings, as well as doors, windows, loading ramps and bays. It influences the movement of air within a building. In addition, there are also internal factors such as walls, barriers, placement of large appliances, solar heat loads, and more.