Just noticed that I typed 140 SCFM, actually it was 104 SCFM. FYI proof reading helps before posting.
ENGINEER"S MOTTO
If it isn't broken, take it apart and fix it!!
I did a quick calculation and got an average of 140 CFM loss over a minute, however this calculation assumes that the pressure can drop over that minute. Less pressure equals less CFM leakage. The compressor keeps itself at a near constant of 114psig at 50% capacity with no work related usage...
Okay, I finally got to do my leak test with no workers on the lines Friday evening. I did a pressure decay analysis at the compressor first, then built the system back up and tested at the end of a hose next. Another note, I finally got to talk to the head maintenance tech, and he showed me...
I've run the numbers, correctly this time, and I have 2749 feet of .75" pipe, 1223 feet of 1" pipe, 1080 feet of 1.5" pipe, 715 feet of 2", and 325 feet of 3" pipe. I also found an air exchange tank, I'm new to this company, Therefore....
.75" OD pipe = 3.682 cubic inches per lineal foot x...
Wow what a stupid mistake, yes LittleInch, you are right. I mixed inches and feet like a dummy. I didn't list all of the pipe that is in the system, I'm measuring it more accurately now, but I think I should end up around the 100 cubic ft mark total. That might make a small difference lol...
Actually its is 114-115 PSIG, I got a little confused when thinking about PSIA, PSI, and PSIG. I think that the PSIG is 114 so that you get 100PSIG at the end of the air lines after pressure drop and losses. I rigged me up a pressure gauge with a male coupling adaptor so I can plug it in to...
Again, thanks for the prompt reply. I wrongly typed 114pisg, It is 100 PSIG! It'll take me a few days or so to get more detailed info for analysis. I will reply though.
Engineer's motto
If it isn't broken, take it apart and fix it!! :)
Thanks for the replies!
There are two 100 hp compressors, only one runs at any given time. 2" diameter main line goes from compressor to air dryer then out with 2"dia into a 3" main distribution line(about 72 ft long). From here it is necked down to five 2"dia lines about 240ft each. Out of...
Hi all, I'm trying to determine CFM loss from change in PSI and known storage. We have an Ingersoll rand r75n screw compressor rated at a maximum of 457 CFM, 75kw/100hp. The compressor runs at approximately 114psi. The compressor is tankless, the only storage is the piping, which comes out to...
