lb/min vs cfm before and after turbo
#23
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Originally Posted by parish8
so you are saying the cfm's are not constant at all but the lb/min is. i guess that makes sence, a suck thru or a blow thru maf should read the same.
so the only benifit to an intercooler is the reduced IAT. it wont actualy see any more lb's of air?
so the only benifit to an intercooler is the reduced IAT. it wont actualy see any more lb's of air?
I was stuck thinking in terms of a supercharger, where you have a fixed impeller speed, so with a better intercooler theres still not a change in mass air.
Sorry if I confused you.
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The more I think about this, the more it makes me think, TURBOS ARE BADASS!
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CFM is volumetric flow, you have to take that flow, temperature and pressure to get a mass flow. Now if its scfm (then is standard cubic feet per minute) then its also a mass flow. Flow rates in scfm have been corrected to 14.7 psia (sea level pressure) and ~ 70 deg F (some people use 60, 70 or 72 deg depending on application). For a steady state system mass flow stays the same, cfm will not. CFM numbers are useless unless you know at what pressure and temperature the numbers were obtained.
Gary
Gary
#25
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Ya, the pressure will no change based on density of the air.
You need to know the boost your running, intake air temps your expecting, and intercooler effciency if you wanna calulate it all out.
Any other questions I would love to help out with, my turbos are kinda my thing.
Hunter
You need to know the boost your running, intake air temps your expecting, and intercooler effciency if you wanna calulate it all out.
Any other questions I would love to help out with, my turbos are kinda my thing.
Hunter