please check my scfm vs acfm calcs!
please check my scfm vs acfm calcs!
(OP)
Can someone verify that I am calculating my scfm to acfm conversion correctly?
Problem: The goal is to achieve 35 scfm at 100 psig. The conditions are 6500 ft elevation (assume 11.56 psi absolute atmospheric pressure) and I am assuming 80° F as the compressors discharge temperature based on vendor-supplied information . What flow will I see discharged from this compressor under these actual conditions?
I have calculated that the acfm (actual flow) will equal only about 5 cfm, but the product vendor tells me more like 30 cfm. Can anyone verify the correct answer for me? Thanks.
Problem: The goal is to achieve 35 scfm at 100 psig. The conditions are 6500 ft elevation (assume 11.56 psi absolute atmospheric pressure) and I am assuming 80° F as the compressors discharge temperature based on vendor-supplied information . What flow will I see discharged from this compressor under these actual conditions?
I have calculated that the acfm (actual flow) will equal only about 5 cfm, but the product vendor tells me more like 30 cfm. Can anyone verify the correct answer for me? Thanks.





RE: please check my scfm vs acfm calcs!
At 100 psig discharge pressure, your absolute pressure is 111.6 psia. Your discharge temperature is 80F.
Therefore 35 scfm = 35*(14.7/111.6)*(80 + 460)/(60 + 460)
= 4.8 actual cfm at 100 psig and 80F
Same as you got. When you talk to him, make you your differentiate between scfm and acfm, I always include the 'a' to help make the actual stand out.
RE: please check my scfm vs acfm calcs!
TAD123
RE: please check my scfm vs acfm calcs!
RE: please check my scfm vs acfm calcs!
saxon
RE: please check my scfm vs acfm calcs!