Thin-Layer Drying Curve Analysis for Sliced Apple Slabs
Calculates the constant drying rate and Biot number for thin-layer drying of slab geometry using convective heat and mass transfer correlations. Validates the external convection regime and internal resistance assumptions.
📖 Need the theory? Read the methodology, assumptions, and equations in the full reference guide.
1. Define Input Parameters
2. Engineering Output
Convective Heat Transfer Coefficient (h)
- W/(m²·K)
- W/(m²·K)
Mass Transfer Coefficient (k_A)
- kg/(m²·s)
- kg/(m²·s)
Constant Drying Rate (Phi_c)
- kg/(kg·s)
- kg/(kg·s)
Biot Number (Bi)
- -
- -
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Download Offline Excel CalculationContext & Assumptions
In thin-layer drying operations, the constant-rate period is governed by external convective mass transfer from the material surface to the air stream. This calculator determines the drying rate using the Chilton-Colburn analogy to relate heat and mass transfer coefficients, and verifies that internal thermal resistance is negligible via the Biot number criterion (Bi < 0.1). The analysis assumes flat-plate forced convection and constant thermophysical properties.
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