Car Park Ventilation
Enclosed car parks are a necessity of life if you are to have shopping malls, office buildings or simply, cars. Now outdoor parking lots do exist, in fact they are more common because they require less maintenance work compared to an enclosed parking area, however, sometimes, you can’t do without the latter, such as in areas where extreme weather is a normality or lack of space means building an underground or multistory parking area. .
In those instances, there is no way you can go about having an enclosed car parking area without a proper ventilation system in place. No what does a car parking ventilation system does? Let’s find out.
In simple words, a car park ventilation system makes sure that the air quality, pressure and temperature in the enclosed parking space is up to a desired level that is good for both humans and the cars. This objective can be further divided into the following parts:
- Cleaning out the pollutants from the air produced by the vehicles throughout the day, week, and year by pushing it to the extraction point using thrust fans.
- Removal of fume build up happening because of air pollution, heat, and vehicle smoke.
- Remove the smoke from the parking area in case of fire emergency.
- Exhaust fans that clear the smoke and fumes completely, during everyday operations and emergency.
How Does a Car Park Ventilation system Work?
Usually, when it comes to systems like this, each installation will be tailored specific to the needs of that particular parking space. However, there are some fundamentals that are true for each instance and have to be followed for efficient performance and proper ventilation.
First, the exhaust point(s) for the air should be taking into account the entry points as air has a way forward traveling through different spaces. Usually, both these points are at the opposite ends a car park which makes the most sense.
Furthermore, the inclusion of thrust fans that push the fumes, smoke, polluted air and all things unwanted in the air to the exhaust point. This is achieved by deploying the right number of appropriately powered thrust fans at the most effective location within the parking area.
Most car parking areas have slabs placed so that the people have the right idea about where to park. These slabs also play a role in determining how the thrust fans will be installed.
Ideally, an airflow parallel to the slabs across the length of the parking area towards the exhaust points is most efficient and it is what most experts suggest as well. However, in some cases that is just not possible, which is when the placement of fans and finding the proper exhaust point is a bit more challenging for engineers.
The car park ventilation system should also be able to work at the maximum capacity for a period of time in case there is a fire emergency and too much smoke has been generated. In such a situation, if the system collapses under the burden of emergency overload, then it is of no use. This is why most car park ventilation systems are generally working at a level far below the full potential during every day operation.