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Air Curtain 에 의한 산소차폐 효과에 관한 연구
이승호,이우일,이준식,차승수,주승기,권제일 대한금속재료학회(대한금속학회) 1991 대한금속·재료학회지 Vol.29 No.8
An air curtain was designed and fabricated in order to maintain an oxygen free environment. With a properly designed air curtain, it was possible to maintain the oxygen concentration less than 0.01 under the conditions of 10∼20 ℓ/min air flow. (fluid velocity:6.17∼12.34 ㎝/sec)When the chamber was purged with nitrogen, the lower equilibrium oxygen concentration($lt;0.001% ) than without purging could be obtained. The oxygen concentrations decreases linearly with time at the beginning of air flow in the air curtain. When the oxygen concentration is decreased to less than 1%, the variation of concentration is proportional to (min.)ⁿ. It was found that n is -2 to -3 without Nitrogen purging and is less than -6 with purging.