3. Drying by immersion frying
3.1 Definitions and principles
When immersing a wet product in a hot oil bath, assuming q oil > q eb of the product at a fixed p tot , the product receives heat by convection from the hot oil bath (figure 4 ). But as there is no potential for external diffusion of water vapor from the product to the oil, the heat received is used first to heat the wet product, until it boils, starting with the hottest outer surface. The steam is then emitted at the total pressure p tot prevailing around the product, i.e. that...
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Drying by immersion frying
Freeze-drying
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