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압력(Kpa)을SCCM으로
이름 ondi 작성일 08-01-14 14:30 조회 67,062
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안녕하세요!

우선 저희 홈페이지에 방문해주셔서 대단히 감사합니다.

차압(Kpa)을 유량(CCM)으로 환산하는 경우는 주로 압력(차압)센서를

이용하여 리크테스터를 제작하여 리크량을 유량단위로 환산하여

볼때 많이 사용되어집니다.

이상기체의 상태방정식

PV = nRT
P = 압력
V = 체적
n = 기체중량
R = 상수
T = 절대온도

온도가 변하지 않을때 PV = P'V'

ex) 만약 표준상태에서 300 cc의 체적을 가진 시료에 5 Kpa의 압력을

    가했을때 5초후 4.0 Kpa로 변했을때 1.0 Kpa의 누설량을

    SCCM(Standard Cubic Centimeter Per Minute)으로 환산을 한다면

    (온도변화가 없다는 가정하에 (T = T'))

    PV = P'V'
    300 cc x 5 Kpa = P' cc x 4.0 Kpa
    P' cc = 375 cc, ΔP = P'- P = 75 cc
    5초동안 75 cc 의 체적변화가 일어났으므로
    1 초 동안에는 15cc, 1분동안에는 900 sccm이 누설되었겠지요.
   
원하시는 답변이 되었는지 모르겠습니다.

감사합니다.

jiuer7845 23-06-19 22:28
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