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根据谷物的吸附原理 ,利用静态调整环境湿度法 ,测定了分别加入浓度为 0、0 .5 %、1.0 %、2 .0 %N a Cl溶液的玉米在 2 0℃、30℃和 40℃三个温度下的平衡含水率曲线 ;分析了 Na Cl溶液浓度、温度和平衡相对湿度对平衡含水率的影响 ,并用修正 H enderson模型、修正 Oswin模型及 Chung-Pfost模型三个数学模型对加入各种浓度 Na Cl溶液玉米的平衡含水率曲线进行了拟合研究 ,得到了描述加入各种浓度 N a Cl溶液玉米的平衡含水率的数学模型。
According to the principle of grain adsorption, using the method of static adjustment of environmental humidity, it was tested that the corn with 0, 0.5%, 1.0%, 2.0% NaCl solution at 20 ℃, 30 ℃ and 40 ℃, The effects of Na Cl concentration, temperature and equilibrium relative humidity on the equilibrium moisture content were analyzed. Three Mathematical Models of Modified H enderson Model, Modified Oswin Model and Chung-Pfost Model were adopted to analyze the effects of various concentrations The equilibrium moisture content curve of corn in NaCl concentration solution was fitted and the mathematical model describing the equilibrium moisture content of corn added with various NaCl concentrations was obtained.