Elevators play an important role to keep people on the move, daily, no matter where they are located. Most elevators are designed in a manner that the air movement happens from the bottom to the top. The blower or the fan extracts the air from its bottom vents. The advantage of having good air exchange is that the air inside it does not become stagnant. Thus, the design should be such that the elevator ventilation is given a lot of importance. There could be an issue that the fan is not working properly or the design is such that air does not pass through its top properly.
It is imperative to understand that the elevator cab is much like a tiny static compartment like a closet, but even more concerning as it is in motion. The fan helps to push out the air from the cab when the elevator is in motion in the elevator shaft.
Elevator Cabs Ventilation Openings is a Code Requirement
Elevators are well-ventilated spaces. Elevators, by code, should feature ventilation openings. These are usually present in modern elevators along with fans. The openings ensure a high degree of air exchange. There is limited exposure time to other people and the air as the duration of an elevator ride is excessively short. It is even less than a few seconds for a high-rise building. Analyses and knowledge indicate that the transmission of airborne harmful particles is much less in comparison to other common spaces. However, certain other parameters cannot be ignored. These include rates of ventilation, passenger flow, and cab sizes among others.
It is crucial to point out here that each state in the United States of America has a different set of regulations and rules for venting in elevator cabs. Furthermore, it is suggested that installation engineers refer to those regulations and codes before venting the elevator cabs.
New Elevator Airflow
A new idea came up to update the portable purification system that has MERV 14 filtration with post- and pre-filtration ionization. The update would replace the exhaust set on an elevator car’s top. The application is waiting for a patent and claims to reverse the flow of air within the elevator cab. It uses filtered air to apply pressure to the space and forces contaminants to move into the hoist way.
Standard Elevator Airflow
Any standard elevator today features an exhaust fan as a basic attribute. The fan aids in circulating air in the elevator. This fan is positioned on the car’s top and extracts air from the elevator cab and into the hoistway. The toe kick helps in pulling the air supply into the cab. It is possible due to the negative pressure triggered by the exhaust fan. The air is also exchanged when the doors of the elevator open to a building.
Irrespective of whether there are ventilation holes in an elevator’s base or not, previous ventilation holes can be covered and fresh ones can be created. It also means that you can ensure that the aesthetics of the elevator cab is superb by getting a clean and nice finish that the cab deserves. It also means that while venting is essential, your cab need not look ugly because of them.
Contact a good elevator services company if you are interested to know more about elevator ventilation or have any other queries!