科研之友
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摘要
A numerical model has been developed for accurate prediction of freeze drying processes subjected to infrared radiation heating. A spectral two-flux radiation model was incorporated into freeze drying analysis to consider the spectral absorption characteristics of moisture-rich products. The temperature of the infrared heater was found to significantly influence the freeze drying behaviors. At a fixed intensity level at the product surface, a higher heater temperature increased the drying time while temperature in the product was significantly reduced. This result was discussed in relation with the spectral composition of light emitting from infrared heaters.
- 出版日期2010
