Test method and performance evaluation of particle removal by electrostatic filters

Puts forward a performance test method of electrostatic filter based on the existing air filter standards. Tests and compares the performance of eight kinds of electrostatic filters in the whole process of the initial state, dust collecting and cleaning. The results show that graded particle size counting method with atmospheric dust, fixed dust-holding capacity method and fixed water consumption method are suitable for electrostatic filter performance test. DEHS and A2 dust can be used as the test dust of electrostatic filter. Small size particle is more suitable to evaluate the attenuation performance of dust-holding of the electrostatic filter. The ePM2.5 calculated by the graded particle size counting efficiency is more accurate than that of the measured PM2.5 weight efficiency. The quality factor which is positively correlated with efficiency can be used to evaluate the performance of the electrostatic filter and select the type of electrostatic filter.