Theoretical Weight of Fuel (\( WF \)):

\[ WF = \frac{Qr}{HVF} \]

Where:

• \( WF \) is the theoretical weight of fuel, in kilograms per minute (kg/min).
• \( Qr \) is the total heat required, in kilojoules per minute (KJ/min).
• \( HVF \) is the heating value of the fuel, in kilojoules per kilogram (KJ/kg).