터널용 전기식 집진설비 현지시험(1)

On-site test of ESP unit in road tunnel has been carried out to evaluate its adaptability to real situation. The selected tunnel was Nam-San No.3 tunnel in seoul. The tested were dust collection performance variation with time, size distribution of collected dust on plate and optimum water pressure for cleaning collection plate. The results show that the initial collection efficiency is 67.5% and 5day-elapsed efficiency 21.5% for nominal 5㎧. The collected dust amount is 224g/cell and the size distribution covers from 0.05㎛ to 90㎛ with geometric mean of 10.05㎛. It was confirmed that the optimum water pressure for cleaning is 2~3 ㎏/㎠.