1gga3档距换算

kg -1绝干气,假定干燥过程中无物料损失,试求: (1)水分蒸发是 q m,W (kg水?h -1); (2)空气消耗 q m,L (kg绝干气?h -1); 原湿空气消耗量 q m,L ’(kg原空气?h -1); ( 3)干燥产品量 q m,G2 ( kg? h -1)。解: q mG 1 =1000kg/h, w 1 =40 ℃,w 2 =5% H 1 =0.009, H 2 =0.039 q mGC =q mG1 (1-w 1 )=1000(1-0.4)=600kg/h x 1 =0.4/0.6=0.67, x 2 =5/95=0.053 ① q mw =q mGC (x 1 -x 2 )=600(0.67-0.053)=368.6kg/h ② q mL (H 2 -H 1 )=q mw7.12286 009 .0039 .0 6.368 HH qq 12 mw mL????? q mL ’=q mL (1+H 1 )=12286.7(1+0.0 0 9)=12 397.3 kg/h ③ q mGC =q mG2 (1-w 2)∴h/6kg .631 05 .01 600 w1 qq 2 mGC mG2?????--------------------------------------------------------------- 精品范文------------------------------------------------------------- 6 /7 精品范文--------------------------------------------------------------- 精品范文------------------------------------------------------------- 7 /7 精品范文,,,