NUMERICAL SIMULATION ON THE COLLECTION EFFICIENCY OF THE PARTICLES IN THE AIR BY THE WIRE-PLATEELECTROSTATIC PRECIPITATORS

Kılıç M., Mutlu M., Altun A. F.

15th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics (ATE-HEFAT 2021), Johannesburg, Güney Afrika, 26 - 28 Temmuz 2021, ss.1672-1676

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Johannesburg
  • Basıldığı Ülke: Güney Afrika
  • Sayfa Sayıları: ss.1672-1676
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

In this study, a numerical simulation model is introduced to evaluate the particle collection efficiency and transport phenomena in an electrostatic precipitator (ESP). Several complex physical processes exist in an ESP, including the turbulent flow, the ionization of gas by corona discharge, particles' movement, and the displacement of electric charge. Particles suspended in the gas media are charged by the attachment of ions. Then, charged particles in the fluid move towards to the collection plate and stick on it. The numerical model comprises the gas flow, electrostatic field, and particle motions. The collection efficiency of the wire-plate type ESP is investigated for the particle diameter range of 1 to 10 µm. It is observed that electric field strengths and current densities show considerable variation in the solution domain. Meanwhile, changing supply voltage significantly affects the acquired charges on the electrostatic field and particle collecting efficiencies. Simultaneously, the distance between the charging and collecting electrodes and the main fluid inlet velocity have important effect on the particle collection efficiency. The influence of the different ESP working conditions, and particle dimensions on the performance of ESP are investigated and discussed.