Heat Available (\( Qaf \)):

\[ Qaf = FCR \times HVf \]

Where:

• \( Qaf \) is the heat available in the fuel, in kilojoules per hour (KJ/hr).
• \( FCR \) is the fuel consumption rate, in kilograms per hour (kg/hr).
• \( HVf \) is the heating value of the fuel, in kilojoules per kilogram (KJ/kg).