Open AccessExperimental Investigation of a Condensation Particle Counter Challenged by Particles with Varying Wettability to Working Liquid
Author(s) -
Longfei Chen,
Xin Zhang,
Cuiqi Zhang,
Mohsin Raza,
Xinghua Li
Publication year - 2017
Publication title -
aerosol and air quality research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.866
H-Index - 55
eISSN - 2071-1409
pISSN - 1680-8584
DOI - 10.4209/aaqr.2017.06.0201
Subject(s) - wetting , condenser (optics) , particle (ecology) , condensation , laminar flow , contact angle , materials science , ultrafine particle , counting efficiency , condensation particle counter , combustion , working fluid , analytical chemistry (journal) , chemical engineering , particle number , composite material , mechanics , nanotechnology , chemistry , thermodynamics , optics , chromatography , physics , volume (thermodynamics) , engineering , oceanography , geology , light source , organic chemistry , detector
The counting efficiency of an in-house laminar flow Condensation Particle Counter (CPC) was investigated experimentally. The CPC was challenged by different sources of particles (ambient particles, and combustion particles generated from CH4 and C2H4), and the counting efficiency of the in-house ultrafine CPC (IUCPC) was obtained by comparing particle concentration data measured by the IUCPC with that measured by a reference instrument, TSI CPC 3775. The counting efficiency is closely related to the contact angle (an indication of the wettability of particles by the working fluid) and the combination of the saturator and the condenser temperatures. The particles from different sources appeared to have different contact angles, in other words, different wettability by the working liquid.
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