Why Mean Sea Level Elevation is a necessary specification while purchasing a new centrifugal fan/blower?
Why Mean Sea Level Elevation is a necessary specification while purchasing a new centrifugal fan/blower?
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Why Mean Sea Level Elevation is a necessary specification while purchasing a new centrifugal fan/blower?
The density of atmospheric air is a function of altitude. The relation between the density of air and altitude can be seen in the following figure.
The total pressure developed by a centrifugal fan consists of static pressure and dynamic pressure. The dynamic pressure is directly proportional to the density of air media as shown in the following relation.
Hence if the density of air changes with the altitude, the total pressure generated by the centrifugal fan also changes.