物料干燥试验中湿度的自动调节

目前与干燥过程比较吻合的模型多为经验模型或半理论模型,因此必须更多地借助于试验手段。合适的试验装置是获得准确、可信实验数据的前提。试验装置是为以对流为主的物料干燥特性、干燥机理、干燥工艺研究提供模拟干燥环境条件(介质的流速、温度和湿度)。为此,针对物料干燥机理研究的需要,设计研制了一套基于工控机的物料干燥试验装置。该装置是一个调湿的供风系统,通过对空气湿度的调节和控制,为模拟多种物料实际干燥工况提供条件,最终确定最佳干燥制度及物料传热、传质特性的研究。

The Autoregulation of Drying Test Humidity in Materials

In order to conduct the experimental study and development of materials drying, an industrial PC-based unit of experiment apparatus has been developed. Humidity can be monitored and adjusted with this system. Through the adjustment and contro1 of humidity will be generated for different kind of drying studies, so as to confirm the optimum drying system and characteristic of the heat transfer and mass transfer study.