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在工业生产中广泛的进行着干燥作业,很多产品是用空气作为干燥介质的如乳粉,洗衣粉、药品等,这些产品在干燥过程中,进入干燥设备的空气温度一般在120—170℃范围内,而排风温度一般在75—90℃之间。在恒速干燥期,被干燥物料表面温度近于空气的湿球温度,而且干燥速度与空气的条件有关。我们于1986—1989年分别研制出乳粉含水量自动控制仪和洗衣粉含水量自动检测仪,在研制过程中发现湿球直径,风速及辐射对
In the industrial production of a wide range of drying operations, many products use air as a drying medium such as milk powder, detergent, medicines, etc., these products in the drying process, the temperature of the air entering the drying equipment is generally in the range of 120-170 ℃ Within the exhaust temperature is generally between 75-90 ℃. In the constant-speed drying period, the surface temperature of the material to be dried is close to the temperature of the wet ball of the air, and the drying speed is related to the air condition. We in 1986-1989, respectively, developed a milk powder water content automatic control instrument and detergent moisture content automatic detector, found in the development process of wet bulb diameter, wind speed and radiation on