Help: The filtration capacity of an air filter is given in cubic units; how can this be converted to cubic units of working pressure?
Thread Content
Help: The filtration capacity of an air filter is given in cubic units; how can this be converted to cubic units of working pressure? The nameplate of a certain air filter indicates a rated filtration capacity of 55 Nm³ per minute, but the medium currently used is 7 kilograms of compressed air at room temperature. What is its maximum allowable flow rate (7 kilograms)? Should it be converted directly using the PV/t formula?
The PV=nRT formula will do. . . At room temperature, this is taken as 20 degrees; after the calculation, it comes to 8.43 m3/min
This flow rate specification should originally be based on the operating conditions, right? It doesn’t seem like it should be marked.
That’s right! An old imported Ingersoll Rand air filter, with English labels; I looked them up one by one using a Chinese-English dictionary. It’s different from the standards in China; it only indicates a rated flow rate of 55 Nm³, a maximum operating pressure of 1.5 Mpa, and a maximum operating temperature of 90 degrees.
There’s no need to look at the filter’s specifications; generally, the filtering capacity of a filter is certainly greater than the displacement of the compressor. Determine the compressor’s flow rate and choose another filter accordingly.