Inner Reactor Diameter (\( D_i \)):

\[ D_i = \sqrt{\frac{1.27 \cdot FCR}{SGR}} \]

Where:

• \( D_i \) is the reactor diameter, in meters (m).
• \( FCR \) is the fuel consumption rate, in kilograms per hour (kg/hr).
• \( SGR \) is the specific gasification rate, in kilograms of fuel per square meter per hour (kg fuel/m²-hr).