A study on the variation of orifice diameter in a straight pipe giving dqual-sampling rate

직선배관에서 균일한 공기 흡입을 하는 오리피스 직경변화에 대한 연구

The objective of this paper is to investigate the variation of orifice diameter in a straight pipe which can give equal-sampling rate. This can be utilized for designing orifice in air-sampling smoke detector. The elements which should be considered for designing orifices was presented and the calculation procedure was also given in this paper. The effects of pipe length, the number of orifices, fan pressure was decribed.