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Types Of Natural Ventilation Effects On Buildings

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By Author: accessarchitects
Total Articles: 25
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In the past, all kinds of structures were ventilated naturally. In today’s times however the scenario has changed. Most of the opportunities for natural ventilation have been compromised by appointment of inner partition walls and reliance on machine-driven systems.

Natural ventilation, unlike the modern ventilation system that forces fresh air in with the help of fans, uses the environmental dynamisms of wind and buoyancy to supply fresh air into buildings. Fresh air is required in buildings to relieve odors, to deliver oxygen for breathing, and to upturn thermal comfort.
Taking the vast landscapes into consideration, the best architects know how to put systems in place without compromising a lot on natural ventilation. If you’re in the construction business and are looking for a top-notch architect that can help you out with ventilation planning, then simply search for best architect office near me online.

Do you know what natural ventilation is? It is important to note that the approach that an architect takes to design natural ventilation systems will change according the type of the building and local climate. Now these are factors that an architect cannot control. However, the quantity of ventilation hangs critically on the meticulous design of internal spaces, and the size and placement of openings in the building and this is something that an architect can control. Hence, it is important for every architect near you to take into consideration the two natural ventilation dynamisms of Wind and buoyancy while designing the system
Wind triggers a positive stress on the bare side and a negative pressure on the protected side of buildings. To align pressure levels, fresh air will go inside any bare opening and be exhausted from any protected opening. In the summer, wind is used to deliver as much fresh air as possible. In colder countries where winter is freezing; ventilation is normally cut down to levels sufficient for eliminating excess moisture and impurities.
In some situations, the wind movement is parallel to a building wall rather than perpendicular to it. There’s nothing to worry in that as it is still possible to induce wind ventilation by different kinds of architectural features or by the way a casement window opens. It is vital to evade obstacles between the bare inlets and protected exhaust openings. Top Architects know that it is necessary to avoid partitions in a room that is oriented perpendicular to the airflow. On the other hand, a good architectural design avoids placement of inlet and outlet windows directly opposite to each other, in order to promote mixing that improves effectiveness of ventilation.
Buoyancy ventilation on the other hand results from the difference in density between inner and outer air. This alteration causes the warm air to upsurge above the cold air, and generates a skyward air-stream. The efficiency of the buoyancy effect rises as the temperature variances between the different units of the building increases. Increased height between the lower and higher openings, leads to better dislodgment and superior ventilation. Buoyancy doesn’t particularly need the wind and works best in hot and humid regions. It provides steady airflow in comparison to wind ventilation and is a sustainable green solution. However, the impact of the buoyancy ventilation system on temperature is less on windy days. The other shortcomings are the following: that this system can exist only in tall buildings because of space limitations and it is fully temperature reliant.
Both of these systems have its flaws but the know how to use their strengths and come up with an effective system

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