Cfm Definition and 62 Threads

I am in he rock drilling industry and I am looking for a formula to be able to calculate what the maximum CFM is through a pipe. For example I have a 0.5” dia. pipe, 600CFM @ 150psi compressor. What is going to be the actual CFM that I will get at the end of a pipe? Any help will be greatly...

Hey. As the title dipicts, is there any relationship between CFM and PSI, linear or non-linear? Any mathamatical relationship either? CFM (cubic feet per minute) is a volume over time, and PSI (lbs per square inch) is a weight essentially over an area. So I take it, there's no real way to...

Im trying to figure out the CFM on a certain project. To sum it up I am taking a 4" PVC Pipe and it is going into a 3" pvc pipe (had to shrink size due to bends and turns). My question is that if a 4" Pipe @ 4500 FPM can withstand 390CFM how will it be affected shrinking it down. Will it speed...

hello physics experts! i have a simple question about PSI and CFM and would like your input. context of the question: a car's turbocharger is essentially an air compressor that forces positive "boost" into the intake manifold. now a great debate among car enthusiasts is why a small...

I am currently getting setting up a project where we will be abrasive blasting 48" dia steel pipe in 80' lenghts utilizing robotic equipment producing 1600 CFM @ 160 PSI. We are endevouring to identify the CFM requirements for our dust collection system which will be required at one end of the...

I am wanting to create a moderate amount of suction with a blower fan and I am trying to figure out the relationship between static pressure and airflow measured in CFM. Does higher CFM necessarily give you greater static pressure? I'm thinking I need between 150 to 200 CFM to get around 1...

Hello all, I am new to this site and was hoping someone could help me. I run into this kind of problem annually. And my boss usually has me spend a boat load of money by oversizing pnuematic pipe "just to be safe". What I need to know is, how much cfm will a 150 ft long 1" copper pipe...

Hello folks, I am trying to find some general numbers on what the recommended max. CFM for compressed air @ 90 PSI is through the following pipe sizes: 1/2", 1", 1.25", 1.5" & 3". I'm not looking for anything specific, just some general numbers. I'd greatly appreciate any input on this! Thanks!

I'm currently designing an air filtration system for the filling compartment of a beverage filler. The goal is to introduce HEPA filtered air at a rate of 2 CFM through a circular pipe opening with diameter of x inches. The air is provided by a compressed air system at a pressure of 120PSI (I...

Here is and Example. There is a system with 2-20ft dia. fans, in parallel, pulling air through a bunch of cooling coils with a cross-sectional area of about 800 ft^2. One fan is running and the other is isolated by backdraft dampers. In this situation the flow through the unit is...

basically i want to know for a fan whether the air flow created is more reliant on speed or torque, if there's some sort of equation out there that'd be helpful too! Thanks.

I have a tough question. I'm trying to calculate the cfm over a surface in a room. assuming that the only airflow out of the room is an exhaust vent. I need to know how to calculate that CFM for the surface near the floor of the room, depending on its distance from the exhaust duct and the...