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b13

0.0643:=CV13

48.036:=M13

142.285:=x13

0.00:=G

13 4.9127:=

b12

0.0539:=CV12

48.150:=M12

128.258:=x12

0.00:=G

12 4.4284:=

b11

0.0464:=CV11

48.287:=M11

114.231:=x11

0.00:=G

11 3.9441:=

b10 0.0412:=CV10 48.474:=M10 100.204:=x10 0.00:= G10 3.4598:=

b9

0.0298:=CV9

48.716:=M9

86.177:=x9

0.30:=

Gid 0.6991=

Gid

1

16

i

xi

100G

i

=:=

bstd 0.00567=Hvid 53.014=Mole 19.976=Total 100.000=

bstd

1

16

i

xi

100b

i

=

:=Hvid

1

16

i

xi

100CV

i

=

:=Mole

1

16

i

xi

100M

i

=

:=Total

1

16

i

xi

=

:=

b16

0.00259:=CV16

0:=M16

4.002602:=x16

0.03:= G

16 0.1382:=

b15

0.00934:=CV15

0:=M15

44.01:=x15

0.32:=G

15 0.96723:=

b14

0.0074:=CV14

0:=M14

28.0135:=x14

2.02:= G

14 1.5196:=

G

4

2.0068:=b

3 0.0133:=CV

3 50.368:=M

3 44.097:=x

3 4.39:=

G3

1.5226:=b

2 0.00910:=CV

2 51.950:=M

2 30.07:=x

2 7.45:=

G2

1.0382:=

b1

0.00442:=CV1

55.575:=M1

16.043:=x1

83.02:=Methane

Ethane

Propane

n-Butane

i-Butane

n-Pentane

i-Pentane

neo-Pentane

n-Hexane

n-Heptane

n-Octane

n-Nonane

n-Decane

Carbon Dioxide

Nitrogen

Helium

G1

0.55392:=

Density Ideal

Gas RD

Summation Factor

1/kPa

Heating value

MJ/kg

Molar MassMole %

API MPMS 14.5GPA Standard 2172-96

GPA Standard 2145-00 (FPS) Rev 2

Calculation of Gross Heating Value,

Relative Density and Compressibility Factor

for Natural Gas Mixtures

from Compositional Analysis

G9

2.9755:=b

8 0.0225:=CV

8 48.749:=M

8 72.15:=x

8 0.00:=

G8

2.4912:=b

7 0.0225:=CV

7 48.949:=M

7 72.15:=x

7 0.31:=

G7

2.4912:=b

6 0.0231:=CV

6 49.045:=M

6 72.15:=x

6 0.25:=

G6

2.4912:=

b5

0.0169:=CV5

49.388:=M5

58.123:=x5

0.83:= G

5 2.0068:=

b4 0.0182:=CV3 49.546:=M4 58.123:=x4 1.08:=

1

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Reference Temperature (0,15,20,25) t 15 tref t 273.15+:=

Refernce Pressure (bar) P 1.01325 Pb P 100:=

Heating Value MJ/m3 Hvid 53.014=

Zstd 1 Pbbstd2:= Zstd 0.9967=

GGid0.9996

Zstd:= G 0.7011=

2