Batch Retort Loading Pattern Optimization
Calculates the center temperature of a spherical food item during thermal sterilization using the Heisler-Grober one-term approximation for transient heat conduction.
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1. Define Input Parameters
2. Engineering Output
Thermal Diffusivity (alpha)
- m²/s
- m²/s
Biot Number (Bi)
- dimensionless
- dimensionless
Fourier Number (Fo)
- dimensionless
- dimensionless
First Root Zeta (zeta_1)
- radians
- radians
Coefficient A1 (A1)
- dimensionless
- dimensionless
Dimensionless Center Temperature (theta_0)
- dimensionless
- dimensionless
Final Center Temperature (T_final)
- °C
- °C
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This calculation is used in food process engineering to ensure microbial safety by determining the temperature at the coldest point of a product. It helps optimize retort residence times to balance food safety with quality preservation.
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