Formula for lb/min to cf/min
Thread Starter
TECH Apprentice
Joined: Jul 2008
Posts: 309
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Formula for lb/min to cf/min Anyone have the formula for converting lb/min to cf/min?
Playing around with HPtuners logging and trying to calculate actual current FE at a given RPM. For this to work though I need the actual engine intake in CFM and not the lb/min that HPtuners is giving.
Thanks
Playing around with HPtuners logging and trying to calculate actual current FE at a given RPM. For this to work though I need the actual engine intake in CFM and not the lb/min that HPtuners is giving.
Thanks
On The Tree
Joined: Aug 2011
Posts: 187
Likes: 0
From: Indiana
Found this from Google... looks like you need to compensate for temperature though.
Re: Converting in lbs per min to CFM ??
by Robert Fogt on 09/09/05 at 01:22:39
Dry air has a density of 13.076307480840681 cubic feet per pound
Dry air at 0ºC has a density of 12.417423770565761 cubic feet per pound.
pounds/minute * cubic feet/pound = cubic feet/minute
So just take whatever conversion factor from above, and multiply it by your pounds/minute value to get cubic feet per minute.
Re: Converting in lbs per min to CFM ??
by Robert Fogt on 09/09/05 at 01:22:39
Dry air has a density of 13.076307480840681 cubic feet per pound
Dry air at 0ºC has a density of 12.417423770565761 cubic feet per pound.
pounds/minute * cubic feet/pound = cubic feet/minute
So just take whatever conversion factor from above, and multiply it by your pounds/minute value to get cubic feet per minute.
