What are different types of commercial ventilation?

Commercial ventilation systems are used to control the internal environment through air exchange. This category includes any type of heating, ventilation and air conditioning system (HVAC) used in a non -resident. Ventilation molds include natural ventilation, mechanical ventilation and mixed mode ventilation. Different classes of ventilation are based on how the system moves or replacement, air. Each has its own specific purposes, as well as individual strengths and weaknesses.

The least expensive form of commercial ventilation is natural ventilation. This type relies on the pressure and temperature of the external air and creates changes in the internal environment. Natural ventilation is achieved by opening doors, windows and holes of the building. This allows the external entrance to the building of the outer air and provides a constant air exchange. The usefulness of this type of ventilation is affected by weather conditions.

Mechanical ventilation relies only on the use of fans and moremechanical devices to enforce air exchange. It can be used in one room or as in the entire ventilation system. This is the most expensive commercial ventilation system because it uses the largest amount of equipment and results in higher operating costs.

natural and mechanical ventilation systems are combined to create ventilation systems of mixed mode. These hybrid systems rely on natural and mechanical elements and create a system that works under different conditions. A common example of mixed mode ventilation is the use of large exhaust fans in conjunction with open doors and windows in a factory building. The fan attracts the outer air into the building through the door and windows and pushes the inner air out. This system is more efficient than natural ventilation, but offers less consistency than mechanical ventilation.

Motors can design buildings that have consistencyTent negative or positive air pressure to ensure the success of mechanical ventilation. The entire ventilation systems of the building usually provide positive air pressure, which means that the internal air pressure of the building is higher than the external pressure. One -room mechanical ventilation systems can be used as positive or negative pressure systems. When used to create an environment with negative pressure, the ventilation system pulls the air out of the room and creates a vacuum to contain dangerous air contaminants such as asbestos or sandbasting media.