HHV @15°C, 101325Pa | Power | Heat | Flow | Volume | Weight | Oil | |||||
Mw | BHP | Gj/d | MMBtud | MMscfd | MMnmc/y | m3LNG/d | LNG tons/y | Boed | TOE/d | ||
Power | Mw | 1 | 1341.0 | 86.40 | 81.89 | 0.08085 | 0.792 | 3.686 | 568.2 | 14.00 | 2.064 |
BHP | 0.0007457 | 1 | 0.06443 | 0.06107 | 6.092E-05 | 0.00059 | 0.002749 | 0.4237 | 0.01044 | 0.001539 | |
Heat | Gj/d | 0.01157 | 15.52 | 1 | 0.948 | 0.0009358 | 0.0091638 | 0.04266 | 6.577 | 0.1620 | 0.0239 |
MMBtud | 0.0122 | 16.38 | 1.055 | 1 | 0.0009873 | 0.0096683 | 0.04501 | 6.939 | 0.1709 | 0.02520 | |
Flow | MMscfd | 12.37 | 16586 | 1069 | 1013 | 1 | 9.8 | 45.59 | 7028 | 173.1 | 25.52 |
MMnmc/y | 1.263 | 1694 | 109.1 | 103.4 | 0.1021 | 1 | 4.655 | 717.7 | 17.68 | 2.606 | |
Volume | m3LNG/d | 0.2713 | 363.8 | 23.44 | 22.22 | 0.02194 | 0.2148 | 1 | 154.2 | 3.798 | 0.5599 |
Weight | LNG tons/y | 0.001760 | 2.360 | 0.1521 | 0.1441 | 0.0001423 | 0.001393 | 0.006487 | 1 | 0.02463 | 0.003632 |
Oil | Boed | 0.07144 | 95.81 | 6.173 | 5.850 | 0.005776 | 0.05656 | 0.2633 | 40.59 | 1 | 0.1474 |
Toe/d | 0.4846 | 648.8 | 41.87 | 39.68 | 0.03918 | 0.3837 | 1.786 | 275.3 | 6.783 | 1 |
Read it horizontally:
1 Mw = 1 Mj/s = 0.018018 kg/s of NG = 0.2516 ncm/s = 0.937218 scf/s = 80975,67 scf/d = 0.080976 MMscfd
This is the minimum flow of NG you can use to run a 1 Mw gas turbine with 100% efficiency: i.e burning every CH4 atom of a CH4 pure NG stream.
Selling to the Oil & Gas and Energy industry, requires to jump from natural gas to oil, from power to physical quantities: tons, barrels, cubic meters, from British to international standards…This table wants to be a hand while gauging a new or an old project, a prospective investment or the purchasing of a new equipment.
These factors are taken into account:
Note the 6 categories:
Power, Heat, Flow, Volume, Weight and Oil.
They should guide you.
Assumptions behind these figures:
Unit of Measure | Value | Note |
ncf/nmc | 35,31 | - |
scf/nmc | 37,33 | - |
cal/J | 4,1868 | - |
j/btu | 1055,056 | - |
t/b | 7,3 | API 33 |
BHP/Kw | 0,7457 | - |
CH4 Mol weight | 16,043 | g/mol |
R | 8,31434 | j/mol/K |
CH4 HHV | 55,500 | @ 15,4 °C MJ/kg |
CH4 LHV | 55,009 | @ 15,4 °C MJ/kg |
molar volume CH4 (cm/mol) | 0,022354315 | @ 0 °C , 101325 Pa |
molar volume CH4 (cm/mol) | 0,023593844 | @ 15 °C , 101325 Pa |
density kg/ncm | 0,71766905 | @ 0 °C , 101325 Pa |
density kg/scm | 0,6799655 | @ 15 °C , 101325 Pa |
liquid density kg/cm | 422,36 | @ 101325 Pa |
mol/nmc | 44,73409275 | - |
mol/scm | 42,38393692 | - |
scm/ncm | 1,05544921 | measured |
scm/ncm | 1,057714421 | pv=nrt |
TOE | 41,868 | Gj |
1 barrel | 158,9873 | liters |
oil density | 0,858 | kg/liter @ 59 °F |
oil density | 7,335 | barrels/metric ton |
1 boe | 5,8 * 10 ^6 | Btu @ 59 °F - HHV |
oil HHV | 45,25 | Mj/kg @59 °F |
oil HHV | 38,84 | Mj/liter |
oil LHV | 42,98 | Mj/kg @59 °F |
oil LHV | 36,89 | Mj/liter |
Gas properties for Natural Gas components:
Component | Mole Wt | Hydrogen Atoms | Carbon Atoms | Cp (1) | HHV (2) | LHV | Auto-ignition T (F) (3) | Flame Speed @ xx (in/s)(4) | |||||
0.60 | 0.80 | 1.00 | 1.20 | 1.40 | |||||||||
H2 | 2.0159 | 2 | 0 | 3.4010 | 324.2 | 273.9 | 752 | 31.74 | 56.10 | 78.99 | 93.75 | 106.30 | |
C1 | 16.0430 | 4 | 1 | 0.5266 | 1009.7 | 909.1 | 999 | 3.83 | 10.95 | 14.65 | 12.54 | 5.67 | |
C2 | 30.0690 | 6 | 2 | 0.4080 | 1768.7 | 1617.8 | 959 | 4.49 | 11.12 | 15.91 | 16.32 | 10.40 | |
C3 | 44.0960 | 8 | 3 | .03887 | 2517.2 | 2315.9 | 871 | 5.36 | 11.48 | 15.53 | 15.42 | 9.51 | |
IC4 | 58.1220 | 10 | 4 | 0.3867 | 3256.6 | 3001.0 | 864 | 6.34 | 12.58 | 17.39 | 18.04 | 13.67 | |
NC4 | 58.1220 | 10 | 4 | 0.3951 | 3262.0 | 3010.5 | 761 | 5.03 | 10.50 | 14.44 | 13.89 | 7.87 | |
IC5 | 72.1510 | 12 | 5 | 0.3829 | 3999.7 | 3697.9 | 788 | From CompressorTech2 APRIL 2015, pg 76 | |||||
NC5 | 72.1510 | 12 | 5 | 0.3880 | 4008.7 | 3706.8 | 496 | ||||||
C6 | 86.1780 | 14 | 6 | 0.3857 | 4756.1 | 4403.9 | 433 | ||||||
C7 | 100.2050 | 16 | 7 | 0.3842 | 5502.8 | 5100.3 | 433 | ||||||
C8 | 114.2320 | 18 | 8 | 0.3831 | 6248.9 | 5796.1 | 428 | ||||||
H2S | 34.0760 | 2 | 0 | 0.2370 | 586.7 | 637.0 | 500 | ||||||
(1) Specific heat Cp at costant pressure conditions near atmospheric (2) Heating values in BTU/scf at 14.696 psia, 60°F, and uncorrected for compressibility from GPA 2545-09 (3) Auto-ignitions temperatures from “Flammability Characteristics of Combustible Gases & Vapors” (4) Laminar Flame Speed from University of Southern California Combustion Kinetics Laboratory C1 methane C2 ethane C3propane C4 isobutane - normal Butane C5 isopentane C6 hexane C7 heptane C8 octane H2S hydrogen sulfide H2 hydrogen |