Deposition rate and purification effect of atmospheric particle by different pipeline connection forms

The connection form of pipelines has an important impact on the comprehensive performance evaluation fresh air systems. most used PVC pipeline material in market was selected for experimental research this paper, and deposition rates particles different 45?, 90? bend, straight tee were all tested compared. purification effect highest rate is studied. results showed that particle tee, with 47.61, 18.06, 8.13% PM10, PM2.5, PM1.0, respectively. As size increases, also gradually increases. larger inlet velocity, greater rate. concentration outlet forms significantly decreased after adding equipment, PM1.0 by 45.01, 68.89, 77.48%. Therefore, use elbows should be reduced, equipment installed process using, which will reduce