다단 가상면 임팩터(Cascade Virtual Impactor)를 이용한 PM 2.5 센서 모듈 연구
(주)코리아스칼라
- 최초 등록일
- 2016.04.01
- 최종 저작일
- 2012.06
- 14페이지/ 어도비 PDF
- 가격 4,600원
* 본 문서는 배포용으로 복사 및 편집이 불가합니다.
서지정보
ㆍ발행기관 : 한국실내환경학회
ㆍ수록지정보 : 한국실내환경학회지 / 9권 / 2호
ㆍ저자명 : 김두용, 조윤행, 황정호
영어 초록
A three-staged cascade virtual impactor was designed, fabricated, and used as aerosol classifier in a dust sensor module. The dust sensor module consisted of the impactor, three commercial dust sensors, and four pumps. For the design of the impactor, three cut-off diameters of 2.5 ㎛, 2.0 ㎛, and 1.5 ㎛ were selected. Then three nozzle widths were determined from computational fluid dynamics (CFD) simulation with the three designed cut-off diameters. </br>Laboratory generated PM2.5 aerosols classified into each of three sizes, via the fabricated impactor, entered a dust sensor from which voltage signals were detected due to particle scattering by a laser diode in the sensor. The voltage signal data from the three sensors were converted to number concentrations of the dust particles utilizing correlation equations obtained from separately performed experiments. The number concentrations were in agreement with those obtained by aerodynamic particle sizer (APS).
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