A Basic Study on a New Type Particulate Emission Control Means of a Power Station Using a Micro-Gap and a Pulse Discharge (Micro-Airgap Discharge Phenomena)

초미소간격(超微小間隔)과 극단(極端)펄스방전(放電)을 이용(利用)한 미연소탄소립자(未燃燒炭素粒子) 소각제거기술(燒却除去技術) 개발기초연구(開發基礎硏究)(I) (초미소간격(超微小間隔)의 방전현상(放電現象))

Breakdown characteristics of a small rod-to-rod microairgap has been studied for obtain an optimum breakdown voltage and an airgap spacing to be used as an emission control means by the electrical arc-burning unburnt carbon particulates exhausted from a power station burner. It is found that the breakdown voltage at the rod-to-rod airgap spacing in the rang of $1{\sim}100{\mu}m$ decreased with decrease in the rod-to-rod airgap spacing. And there were no minimum breakdown voltage on a $V_b$-Pd characteristics which is known as the minimum voltage in Paschen's law in air atmosphere. Breakdown voltages of the airgap at the constant airgap spacing were $V_{b-dc}>V_{b-ac}>V_{b-pulse}$, and it was lowest for the pulse voltage applied. As a result, it is found that a pulse power was one of effective power compared with dc or ac to be used as such an unburnt carbon particulate emission control means and the airgap spacing became to several tens ${\mu}m$, then the breakdown voltages were down to several handreds voltages.