Pressurizing a building, using powered supply equipment, is an effective way to further assist already naturally rising warm air and fumes. Powered equipment gives the building's interior airflow an extra boost, improving air turnover. A Pressure Gravity System increases the overall ventilation capabilities of a natural ventilation system.

Intake fans help a ventilation system direct supply air deep in a plant’s interior. It is especially useful when ventilation is needed at certain points in the plant or when there is an issue with air quality throughout the building. This can help improve air quality where a facility might have ventilation dead zones and need a more targeted air supply. Directing supply air can improve the conditions of heavily traveled interior spaces and create a more comfortable environment for workers.

Heated air and fumes can easily become a workplace hazard if not handled properly, especially when they are allowed to build unchecked over time. As fumes and hot air build, the air quality of the building suffers. Poor ventilation conditions can make the interior humid, hazy, and even hazardous. When natural exhaust outlets are placed in accordance with the powered supply air, building air-flow can be greatly increased, preventing fumes and hot air from building.

Natural gravity openings, such as a natural ventilator on the roof, self-adjust to handle a building’s airflow. This means that as airflow from the intake supply fans increases, so does the velocity of the air going through the gravity opening. This self-adjusting system means that when more air is needed, say if a hot spot arises within the facility, intake equipment can simply be added to improve the overall airflow.

Unlike a roof exhaust fan system that requires time-consuming, costly, and tedious roof modifications and maintenance hours each time more air is needed, a pressure gravity system provides the ability to easily increase air-flow capacity. Extensive roof modifications, and the need for rooftop maintenance can be avoided, almost altogether. Of course adding additional powered roof exhaust also doesn't introduce supply air to hot spots, or solve smoke and haze build-up.

A pressure gravity system operates for up to 50% less than fully powered ventilation options. It also provides all the following added benefits to any facility:

To learn more about pressure gravity systems, contact Moffitt Corporation today.