远红外辐射并配以排湿气流干燥蘑菇片的实验研究

The experimental study on mixing dehydration characteristic of far infrared radiation and air convective on mushroom

建 立了远红外辐射 并配以排湿气流干 燥切片蘑 菇时有关 质热参数 模型，分析了 干燥中辐 射强化系数 Ｋ１ ，对流传质汽化系数 Ｋｔ ，总换热系数 α０ 和辐射换热系 数 α Ｅ 等 的变化规律⒚结果表 明，干燥温度和蘑菇含水率的不同，导致 Ｋ １ ， Ｋ１ Ｋ ｔ，α０ ，α Ｅ

To optimize project of far infrared radiation and air convective mixing dehydration on mushroom, the mixed drying experiments were conducted. We established the mass and heat models of far infrared radiation and air covective mixed drying on mushroom. The kinetic equations of drying process were deduced, the radiation strengthening coefficient ( K 1), mass transfer vaporization coefficient ( K 1K t ), the whole heat transfer coefficient ( α 0) and the far infrared radiation heat transfer coefficient ( α E) were calculated. We also analyzed the variation of these coeffcient with moisture content of muhsroom and drying temperature. It is shown that these coefficients ( K 1,K 1K t, α 0,α E) vary with the drying temperature and moisture content of mushroom.