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
DIideal gas relative density ()
Zb(air) compressibility factor of air, or 0.99959
Zb(gas) compressibility factor of gas mixture
Equation C-10 Corrected Dry BTU Value
DRYBTU value from Equation C-7
Z compressibility fa ctor (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
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=