Theoretical and experimental studies of the effectiveness of an electrostatic air cleaning filter

The paper presents theoretical aspects of calculation of the efficiency of air cleaning electrostatic filter (ESF) used for removal of fine-dispersed dust, depending on the design of systems of collecting electrodes and their materials. The obtained analytical expressions for the calculation of the degree of cleaning, allow determining constructive and technological parameters providing the required air environment cleaning efficiency. We have presented the results of comprehensive laboratory research of ESF using different systems of collecting electrodes, supply voltage of the filter, relative humidity and air flow speed. The obtained results show that power supply voltage, relative humidity of air environment and air flow speed mostly influence on the operation of ESF. The proposed design of the ESF with oiled main and N-collecting plates is recommended for cleaning the heat exchangers convective flows.