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C-12 DATA COMPUTATIONS
MON2000
Heating Value Calculations JULY 2010
where
(f) Compressibility and Base Pressure
Compressibility and base pressure
corrections for Dry BTU are:
where
(g) BTU Calculations
Note that the BTU calculations apply to
Gross dry, saturated, actual BTU and
Net dry, saturated, and actual BTU
DRYBTU value from Equation C-7
CORRSATBTU corrected saturated BTU content per cubic
foot of total gas sample at base conditions of
BASE PRS and 60 °F
Z compressibility of total gas as calculated in
Equation C-10
BASEPRS base (contract) pressure specified; defaults to
14.73 PSIA
Equation C-12 Dry BTU at Base Pressure
CorrDryBTU
DryBTUatBasePressure
Z
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⎝⎠
⎛⎞
=
ContractPressure
BasePressure
----------------------------------------------- -
⎝⎠
⎛⎞
CORRDRYBTU value from Equation C-7
Z compressibility factor (see Equation C-10)
BASE PRESSURE base (contract) pressure specified;
defaults to 14.73 PSIA
Equation C-13 BTU Calculations
GrossActualBTU corr()GrossDryBTU corr()100
WVC()
100
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–
⎝⎠
⎛⎞
×=