한국가스학회지 (Journal of the Korean Institute of Gas)
- 제1권1호
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- Pages.106-112
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- 1997
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- 1226-8402(pISSN)
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- 2713-6922(eISSN)
저항회로의 개폐불꽃에 의한 폭발성 가스의 점화한계에 관한 연구
A Study on The Ignition Limit of Flammable Gases by Discharge Spark of Resistive Circuit
초록
본 연구는 직류 저항회로의 개폐불꽃에 의한 폭발성 가스의 점화한계를 실험적으로 고찰하였다. 실험은 IEC형 불꽃점화 시험장치의 폭발용기에 폭발성 가스(메탄-공기 프로판-공기, 에틸렌-공기, 수소-공기)를 각각 넣고 텅스텐 전극과 카드뮴 전극사이에서 발생하는 3,200회의 개폐불꽃에 의한 점화유무를 확인하므로서 점화한계를 구하였다. 또한 실험장치의 점화감도교정을 실험한 후에 실시하므로서 실험의 정확성을 기하였다. 실험결과 최소 점화 전류값을 갖는 최소점화한계농도는 메탄-공기 8.3 [
This study measured the ignition limits of methane-air, propane-air, ethylene-air, and hydrogen-air mixture gases by discharge spark of D.C. power resistive circuit. The used experimental device is the IEC type spark ignition test apparatus, it consists of explosion chamber and supply -exhaust system of mixture gas. Mixture gases (methane-air, propane-air, ethylene-air, and hydrogen-air) were put into explosion chamber of IEC type spark ignition test apparatus, then it was confirmed whether ignition was made by 3,200 times of discharge spark between tungsten electrode and cadmium electrode. The ignition limits were found by increasing or decreasing the value of current. For the exact experiment, the ignition sensitivity was calibrated before and after the experiment in each condition. The ignition limits were found by changing the value of concentration of each gas-air mixture in D.C. 24 [V] resistive circuit. As the result of experiment, it was found that the minimum ignition limit currents exist at the value of methane-air 8.3 [
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