In conclusion, itвЂ™s important to weigh the Pros and Cons of stack-effect ventilation and see if yourВ building can benefit from environmentally friendly ventilation. Can bring dust or polluted air into buildings.The impact depends on exterior temperatures. Cannot completely control temperatures.Utilizes natural elements (Temperature and Gravity).

Does not require the wind to be blowing.

Furthermore, technological advancements, such as CFD air-flow computer modeling, can make predicting the impact of natural ventilation easier to see The Pros and Cons of Stack Effect Ventilation PROS Directing warm air away from the building personnel, and letting it escape through the roof, will have a significant impact on interior conditions. In short, stack effect ventilation can make a dramatic difference in any facility. whether or not the intake side faces the wind) will impact how much of an impact the chimney effect has on the building. Other factors, such as the shape of the building itself, and its orientation (i.e. That isnвЂ™t to say that lower heat buildings canвЂ™t utilize natural ventilation, it would just require a different configuration or powered intake air. Buildings with less heat, like a distribution center, may see less benefit. This increased rate means that the air moves through the building faster, turning over the air in the building more times per hour. A building with a high-temperature process (say a glass furnace or a steel caster) will heat the air up to a higher temperature, causing it to rise faster. The amount of heat in the building also plays a part. Stack effect ventilation requires a high ceiling to work properly. In these situations, ventilating with the chimney effect has negligible impact. If the buildingвЂ™s ceiling isnвЂ™t that high than the warm air is not actually moving away from the inhabitants. The most crucial factor in determining the effectiveness of this type of natural ventilation is dependent upon the size of the building. How Well does Stack Effect Ventilation Work? Installing natural ventilators on a buildingвЂ™s roof, and wall louvers near the floor, allow for this air to easily travel through the building. The resulting vacuum this movement creates will cause cooler air to be drawn in through the lower opening. If the temperature inside the building is higher than the temperature outside, the warmer air will naturally flow up and out through the higher opening. They tend to rest at various levels and вЂњstackвЂќ one on top of the other.Д¬reating two openings in the building, one low and one high, to achieve a natural flow of air. Different temperatures of air rise or fall accordingly.

Warm air is less dense and as such rises upward. This is a result of the density of the air particles at a molecular level. Chilly air is denser so it falls to the floor and/or will move into a building where the air is warmer. When the air at the floor level of a building is warmer than the air at the ceiling, it is naturally compelled to flow upward. This process is also known as the вЂњChimney EffectвЂќ, as it works the same way. By designing their building to vent the warm, stagnant air through the rooftop, and replace it with cool, fresh air the building is made cooler and more comfortable. Many large commercial and industrial buildings utilize natural ventilation. By taking advantage of the differences in air density inside, outside, and throughout the building a space can be made cooler. Stack effect ventilation uses this same principle to ventilate a building naturally. If youвЂ™ve ever noticed that the attic in your house is warmer than the floors below? If so, then youвЂ™ve seen the stack ventilation in action.

Darc effect stack