DATA COMPUTATIONS C-11
MON2000
JULY 2010 Heating Value Calculations
where
(d) Compressibility Factor Dry BTU
Compressibility uses calculations from
AGA Report No. 8 (1992) errata (1993)
“Compressibility Factors of Natural Gas
and other related Hydro-Carbon Gases”.
where
(e) Corrected Saturated BTU
D
I
ideal gas relative density ()
Z
b(air)
compressibility factor of air, or 0.99959
Z
b(gas)
compressibility factor of gas mixture
Equation C-10 Corrected Dry BTU Value
DRYBTU value from Equation C-7
Z compressibility factor (see Equation C-9)
BASE PRS base (contract) pressure specified; defaults to
14.73 PSIA
Equation C-11 Corrected Saturated BTU Value of Total Gas
CORRDRYBTU
DRYBTU
Z
------------------------
=
CORRSATBTU
DRYBTU()0.9826()
Z
-------------------------------------------------- -
=