Analysis on the Influence of the Exchange Area on the Heat Exchange Efficiency during Far-Infrared Convection Combination Grain Drying Process

摘要

Based on energy-saving and quality-keeping drying concept proposed by domestic and overseas scholars in recent years, this paper designs a new experiment scheme.The test was performed on the self-made test bench by means of far infrared convection combined drying method.To explore the intrinsic link and interaction between parameters in the drying process, the inlet air volume was 15.24 m3/h, 18.78 m3/h and 26.23 m3/h. Heat transfer tube spray HS-2-1 low temperature infrared materials and non-sprayed infrared materials. The data of each group were tested and the heat transfer efficiency was calculated. Analysis of sprayed infrared materials and non-sprayed infrared materials under conditions, The heat transfer efficiency to achieve the best state of the parameters of the range.