PROGAS (Version 31-Jan-2012) Calculation for Mixtures of Real Gases 05-Feb-2012 20:36:15 GAS 3 ISO 20765-1 2005(E) Actual Gas Conditions Pressure 50.00 bar a = 725.19 psia Temperature -23.15 deg C = -9.67 deg F = 250.00 K Sum of Given Gas Composition = 100.0000 Mol% Results Mol% Vol% Wght% Hydrogen.....................H2 0.0000 0.0000 0.0000 Helium.......................He 0.0000 0.0000 0.0000 Water Vapor.................H2O 0.0000 0.0000 0.0000 Carbon Monoxide..............CO 0.0000 0.0000 0.0000 Nitrogen.....................N2 0.9617 0.9650 1.4335 Oxygen.......................O2 0.0000 0.0000 0.0000 Hydrogen Sulfide............H2S 0.0000 0.0000 0.0000 Argon........................Ar 0.0000 0.0000 0.0000 Carbon Dioxide..............CO2 1.5021 1.4979 3.5175 Methane.....................CH4 85.9284 86.0607 73.3514 Ethane.....................C2H6 8.4563 8.4048 13.5301 Propane....................C3H8 2.3022 2.2625 5.4018 iso-Butane..............i-C4H10 0.0000 0.0000 0.0000 n-Butane................n-C4H10 0.6985 0.6712 2.1602 neo-Pentane...........neo-C5H12 0.0000 0.0000 0.0000 iso-Pentane.............i-C5H12 0.0000 0.0000 0.0000 n-Pentane...............n-C5H12 0.1218 0.1123 0.4676 n-Hexane................n-C6H14 0.0228 0.0204 0.1045 n-Heptane...............n-C7H16 0.0057 0.0047 0.0304 n-Octane................n-C8H18 0.0005 0.0004 0.0030 n-Nonane................n-C9H20 0.0000 0.0000 0.0000 n-Decane...............n-C10H22 0.0000 0.0000 0.0000 Sulfur Dioxide..............SO2 0.0000 0.0000 0.0000 Cyclopentane............c-C5H10 0.0000 0.0000 0.0000 Cyclohexane.............c-C6H12 0.0000 0.0000 0.0000 Methylcyclopentane.....CH3-C5H9 0.0000 0.0000 0.0000 Methylcyclohexane.....CH3-C6H11 0.0000 0.0000 0.0000 2,2-Dimethylbutane..2,2-i-C6H14 0.0000 0.0000 0.0000 2,3-Dimethylbutane..2,3-i-C6H14 0.0000 0.0000 0.0000 Benzene....................C6H6 0.0000 0.0000 0.0000 Toluene....................C7H8 0.0000 0.0000 0.0000 o-xylene................o-C8H10 0.0000 0.0000 0.0000 Sum 100.000 100.000 100.000 Ultimate Analysis in Weight% C=73.3906 H=22.6185 O= 2.5575 N= 1.4335 S= 0.0000 HE= 0.0000 AR= 0.0000 C+H+O+N+S+HE+AR = 100.0001 Molar Mass = 18.7938 kg/kmol Gas Constant = 442.407 J/(kg*K) Low Heat Value = 46.895 MJ/kg = 20161. BTU/lb High Heat Value = 51.883 MJ/kg = 22305. BTU/lb Pressure 1.013bar 1.013bar 1.013bar 14.73psi Actual Temperature 0. degC 15. degC 25. degC 60. degF Actual ------------------------------------+---------+---------+---------+---------+ Wobbe Lower Index [-] 48.906 46.344 44.783 46.362 Wobbe Upper Index [-] 54.107 51.273 49.546 51.292 Low Heat Value MJ/m3 39.448 37.374 36.110 37.389 2769.884 Low Heat Value BTU/ft3 1058.7 1003.1 969.2 1003.5 74340.9 High Heat Value MJ/m3 43.643 41.349 39.951 41.365 3064.471 High Heat Value BTU/ft3 1171.3 1109.8 1072.2 1110.2 82247.3 Density kg/m3 0.8412 0.7970 0.7700 0.7973 59.0655 Density lb/ft3 0.0525 0.0498 0.0481 0.0498 3.6874 Relative Density [-] 0.6506 0.6504 0.6502 0.6504 Compression Factor [-] 0.99677 0.99730 0.99760 0.99732 0.76537 Internal Energy kJ/kg -172.212 -148.678 -132.687 -147.798 -269.329 Enthalpy kJ/kg -51.758 -21.542 -1.099 -20.416 -184.677 Entropy kJ/(kg*K) 0.0762 0.1838 0.2536 0.1867 -2.0757 Heat Capacity cp kJ/(kg*K) 1.9975 2.0319 2.0569 2.0333 2.9473 Heat Capacity cv kJ/(kg*K) 1.5485 1.5838 1.6092 1.5851 1.6370 Isentropic Exponent [-] 1.2858 1.2795 1.2751 1.2793 1.3464 Joule Thomson Coeff. K/bar 0.6381 0.5691 0.5281 0.5667 0.7323 Speed of Sound m/s 393.551 403.328 409.625 403.681 337.603 Dynamic Viscosity Pa*s*E-6 10.054 10.548 10.874 10.566 11.045 HeatCircuitCapacityW/(m*K) 0.0279 0.0300 0.0314 0.0300 0.0314 ASTM-D3588-1998 for Molar Mass and Calorific Values at 60F ISO 20765-1 2005 for Thermodynamic Properties ISO 5167-2003 for Flow Calculation Flow Element Diameter 122.90 mm (122.90 mm at -23.15 degC no temperature correction) Pipe Diameter 202.50 mm (202.50 mm at -23.15 degC no temperature correction) Diameter Ratio 0.6069 Pressure Difference 0.4320 bar = 6.2656 psi Orifice with Corner Tapping Mass Flow = 17.350 kg/s Kinematic Viscosity = 0.18700E-06 m2/s Reynolds Number (dPipe) = 0.98765E+07 [-] Discharge Coefficient = 0.60346 [-] Flow Coefficient = 0.64910 [-] Expansion Factor = 0.99741 [-] Mach number = 0.0733 [-] http://progas.axelebert.org