Hai bisogno di aiuto veloce? Chiamata 1-800-LEE-PLUG

Microidraulica Industriale

Gas Flow – Units Constant "K"

To eliminate the need to convert pressure and flow parameters into specific units such as “psia" and “std L/min.", the table below lists values of the Units Constant “K", which is used in the Gas Flow Lohm Formulas:

 

 

VOLUMETRIC FLOW UNITS
Abs. Pres psia bar kPa mm. Hg
Flow SLPM SCFM in3/min SLPM SCFM SLPM mL/min
H2 1030 36.3 62 700 14 900 526 149 19 900
He 771 27.2 47 100 11 200 395 112 14 900
Neon 343 12.1 20 900 4 980 176 49.8 6 640
Nat. Gas 319 11.3 19 400 4 620 163 46.2 6 160
N2 276 9.73 16 800 4 000 141 40.0 5 330
CO 274 9.69 16 700 3 980 141 39.8 5 300
Air 271 9.56 16 500 3 930 139 39.3 5 230
Ethane 251 8.86 15 300 3 640 129 364 4 850
O2 257 9.08 15 700 3 730 132 37.3 4 970
Argon 245 8.65 14 900 3 550 125 35.5 4 730
CO2 213 7.52 13 000 3 090 109 30.9 4 110
N2O 214 7.56 13 100 3 100 110 31.0 4 140
SO2 176 6.21 10 700 2 550 90.1 25.5 3 400
Freon-12 123 4.34 7 510 1 780 63.0 17.8 2 380

 

GRAVIMETRIC FLOW UNITS
Abs. Pres psia bar kPa mm. Hg
Flow PPH lbm/s kg/min PPH kg/min kg/min gm/min
H2 11.6 0.00322 0.0876 168 1.27 0.0127 1.69
He 17.3 0.00479 0.131 250 1.89 0.0189 2.25
Neon 38.7 0.0108 0.293 561 4.25 0.0425 5.66
Nat. Gas 34.8 0.00966 0.263 505 3.82 0.0382 5.09
N2 43.2 0.0120 0.326 626 4.73 0.0473 6.31
CO 43.0 0.0119 0.325 623 4.71 0.0471 6.28
Air 43.8 0.0122 0.331 636 4.81 0.0481 6.41
Ethane 42.2 0.0117 0.319 611 4.62 0.0462 6.16
O2 46.0 0.0128 0.348 667 5.04 0.0504 6.72
Argon 54.6 0.0152 0.413 792 5.99 0.0599 7.99
CO2 46.0 0.0145 0.396 759 5.74 0.0574 7.65
N2O 52.7 0.0146 0.398 764 5.77 0.0577 7.70
SO2 63.0 0.0175 0.476 914 6.91 0.0691 9.21
Freon-12 83.2 0.0231 0.629 1210 9.12 0.0912 12.2

To eliminate the need to convert pressure and flow parameters into specific units such as “psia" and “std L/min.", the table below lists values of the Units Constant “K", which is used in the Gas Flow Lohm Formulas:

 

 

VOLUMETRIC FLOW UNITS
Abs. Pres psia bar kPa mm. Hg
Flow SLPM SCFM in3/min SLPM SCFM SLPM mL/min
H2 1030 36.3 62 700 14 900 526 149 19 900
He 771 27.2 47 100 11 200 395 112 14 900
Neon 343 12.1 20 900 4 980 176 49.8 6 640
Nat. Gas 319 11.3 19 400 4 620 163 46.2 6 160
N2 276 9.73 16 800 4 000 141 40.0 5 330
CO 274 9.69 16 700 3 980 141 39.8 5 300
Air 271 9.56 16 500 3 930 139 39.3 5 230
Ethane 251 8.86 15 300 3 640 129 364 4 850
O2 257 9.08 15 700 3 730 132 37.3 4 970
Argon 245 8.65 14 900 3 550 125 35.5 4 730
CO2 213 7.52 13 000 3 090 109 30.9 4 110
N2O 214 7.56 13 100 3 100 110 31.0 4 140
SO2 176 6.21 10 700 2 550 90.1 25.5 3 400
Freon-12 123 4.34 7 510 1 780 63.0 17.8 2 380

 

GRAVIMETRIC FLOW UNITS
Abs. Pres psia bar kPa mm. Hg
Flow PPH lbm/s kg/min PPH kg/min kg/min gm/min
H2 11.6 0.00322 0.0876 168 1.27 0.0127 1.69
He 17.3 0.00479 0.131 250 1.89 0.0189 2.25
Neon 38.7 0.0108 0.293 561 4.25 0.0425 5.66
Nat. Gas 34.8 0.00966 0.263 505 3.82 0.0382 5.09
N2 43.2 0.0120 0.326 626 4.73 0.0473 6.31
CO 43.0 0.0119 0.325 623 4.71 0.0471 6.28
Air 43.8 0.0122 0.331 636 4.81 0.0481 6.41
Ethane 42.2 0.0117 0.319 611 4.62 0.0462 6.16
O2 46.0 0.0128 0.348 667 5.04 0.0504 6.72
Argon 54.6 0.0152 0.413 792 5.99 0.0599 7.99
CO2 46.0 0.0145 0.396 759 5.74 0.0574 7.65
N2O 52.7 0.0146 0.398 764 5.77 0.0577 7.70
SO2 63.0 0.0175 0.476 914 6.91 0.0691 9.21
Freon-12 83.2 0.0231 0.629 1210 9.12 0.0912 12.2