(주)에이피엠엔지니어링

미세먼지 간이측정기 현장 검사용 시험 입자 발생기 개발 및 성능 평가

Development and performance evaluation of a test particle generator for a field inspection equipment of PM-2.5 sensors

Abstract 

In this study, a fluidized bed particle generator was developed to generate an aerosol without supply of compressed air and to increase portability. It was assumed that the mixing ratio of the test particles and beads, the input amount, and the air flow rate supplied to the generator would have effect on the aerosol generation characteristics. The product of these three parameters was set as a characteristic parameter and particle generation characteristics according to the change of the characteristic parameter were observed. As a result, it was confirmed that the input amount of test particles and beads was not suitable as a characteristic parameter and a characteristic parameter expressed as a product of the mass mixing ratio and the air flowrate was newly defined. When the new characteristic parameter is applied, it can be confirmed that the total amount of particles generated from the particle generator is a function of the characteristic parameter. As a result of measuring the amount of particle generation by adjusting the characteristic parameter, it was confirmed that the performance required for the test particle generator for the field inspection equipment of PM-2.5 sensors could be satisfied.

Key words 

aerosol generator, particle generator, fluidized bed, low cost dust sensor

▶출처 : 한국입자에어로졸학회 Vol. 18, No. 3: September 2022 pp. 61-68