Novel Approach In Binary Nucleation Experiments Performed Under Laboratory Conditions.

0496656 - ÚCHP 2019 RIV FI eng C - Conference Paper (international conference)
Škrabalová, Lenka - Trávníčková, Tereza - Havlica, Jaromír - Krejčí, Petr - Hrubý, Jan - Ždímal, Vladimír
Novel Approach In Binary Nucleation Experiments Performed Under Laboratory Conditions.
Proceedings of the 20th International Conference on Nucleation and Atmospheric Aerosols. Helsinki: Kirjapaino Hermes Oy, 2017 - (Halonen, R.; Nikandrova, A.; Kontkanen, J.), s. 187-188. Report Series in Aerosol Science, 200. ISBN 978-952-7091-85-2. ISSN 0784-3496.
[International Conference on Nucleation and Atmospheric Aerosols /20./. Helsinki (FI), 25.06.2017-30.06.2017]
R&D Projects: GA ČR(CZ) GAP105/12/0664
EU Projects: European Commission(XE) 315760 - HEXACOMM
Institutional support: RVO:67985858 ; RVO:61388998
Keywords : binary nucleation * sulfuric acid – water * laminar Co-flow tube
OECD category: Physical chemistry; Thermodynamics (UT-L)
http://www.helsinki.fi/~rohalone/ICNAA2017_proceedings_171x245.pdf

In this work we introduce a novel device especially designed for binary or ternary nucleation experiments – a laminar co-flow tube (LCFT). The first experiments performed on this type of device were focused on binary nucleation of sulfuric acid-water. Main advantage of the co-flow design of LCFT is, that the turbulent mixing zone is not present. Simple modeling of laminar flow then leads to more accurate determination of location and composition of nucleation zone. The sheath flow of water vapor surrounding the axial sulfuric acid stream prevents the losses of H2SO4 on the chamber wall. A detailed description of the whole experimental device and validation of operational set-up parameters can be found here (Krejčí 2010). At this device, concentrations of newly formed nuclei versus time are measured as an input parameter for mathematical model.
Permanent Link: http://hdl.handle.net/11104/0289323