3.9 Derivation of the fuel-specific factor F FH
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - International Codes - NOx Technical Code - Technical Code on Control of Emission of Nitrous Oxides from Marine Diesel Engines - Appendix 6 - Calculation of exhaust gas mass flow (carbon-balance method) - 3 Method 2, universal, carbon / oxygen-balance - 3.9 Derivation of the fuel-specific factor FFH

3.9 Derivation of the fuel-specific factor F FH

  3.9.1 Used for the calculation of wet concentration from dry concentration according to 5.12.2 of this Code.

(2-54)

  Note: In the following derivation, the symbols for the originally indicated variables differ from the symbols given in the abbreviations because of the names of the variables in the mentioned program, e.g., K W,r = K WEXH = KWEXH

  3.9.2 The derivation of FFH considers dry intake air because formula (8) handles water in the intake air separately.

(2-55)

and where:

 (2-56)

(Balance of the volumes)

 (2-57)

and where:

 (2-58)

and:

 (2-59)
(2-60)
(2-61)

  3.9.3 This universal formula, applicable for all fuels (with known exhaust density), may be simplified for diesel fuels as follows:

(2-62)
Parent topic: 3 Method 2, universal, carbon / oxygen-balance
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