Theoretical Heat Required (\( Qr \)):

\[ Qr = \frac{Hn \times AF}{Vs} \]

Where:

• \( Qr \) is the theoretical heat required, in kilojoules per minute (KJ/min).
• \( Hn \) is the net enthalpy, in kilojoules per kilogram (KJ/kg).
• \( AF \) is the airflow rate, in cubic meters per minute (m³/min).
• \( Vs \) is the specific volume of air, in cubic meters per kilogram (m³/kg).