参考答案

y₁=0.02，y₂=0.02×1%=0.0002
x_1e=y_1e/m=0.02/0.36=0.0556，x₂=0.0002
(L/G)_min=(y₁-y₂)/(X_1e-x₂)
=(0.02-0.0002)/(0.0556-0.0002)=0.3574
L/G=1.5(L/G)_min=1.5×0.3574=0.536
x₁=x₂+(y₁-y₂)/(L/G)=0.0002+(0.02-0.0002)/0.536=0.0371
△y₁=y₁-mx₁=0.02-0.36×0.0371=0.00664
△y₂=y₂-mx₂=0.0002-0.36×0.0002=0.000128
△y_m=(0.00664-0.000128)/ln(0.00664/0.000128)=0.00165
N_OG=(y₁-y₂)△y_m=(0.02-0.0002)/0.00165=12
H_OG=G/(K_Ya)=53/3600(π/4×1.1²)/0.015m=1.033m
Z=H_OG·N_OG=1.033×12m=12.4m