Zobrazeno 1 - 10 of 15 pro vyhledávání: '"Jouni Pyykönen"'
1
A novel porous tube reactor for nanoparticle synthesis with simultaneous gas-phase reation and dilution
Autor: Mika Ihalainen, Jarno Ruusunen, Anna Lähde, Qi Hang Qin, Jorma Jokiniemi, Jouni Pyykönen, Tiina Torvela, Olli Sippula, Tommi Karhunen, Jorma Joutsensaari, Sebastiaan van Dijken, Petri Tiitta
Publikováno v: Ruusunen, J, Pyykönen, J, Ihalainen, M, Tiitta, P, Torvela, T, Karhunen, T, Sippula, O, Qin, Q H, van Dijken, S, Joutsensaari, J, Lähde, A & Jokiniemi, J 2015, ' A novel porous tube reactor for nanoparticle synthesis with simultaneous gas-phase reation and dilution ', Aerosol Science and Technology, vol. 49, no. 11, pp. 1170-1180 . https://doi.org/10.1080/02786826.2015.1107675
A novel porous tube reactor that combines simultaneous reactions and continuous dilution in a single-stage gas-phase process was designed for nanoparticle synthesis. The design is based on the atmospheric pressure chemical vapor synthesis (APCVS) met
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f783971f5f8debf8befb7ba49d545556
https://doi.org/10.1080/02786826.2015.1107675
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2
Transport of ruthenium in primary circuit conditions during a severe NPP accident
Autor: N. Davidovich, Teemu Kärkelä, N. Vér, Jouni Pyykönen, Tim Haste, Laurent Cantrel
Publikováno v: Kärkelä, T, Vér, N, Haste, T, Davidovich, N, Pyykönen, J & Cantrel, L 2014, ' Transport of ruthenium in primary circuit conditions during a severe NPP accident ', Annals of Nuclear Energy, vol. 74, pp. 173-183 . https://doi.org/10.1016/j.anucene.2014.07.010
Annals of Nuclear Energy
Annals of Nuclear Energy, Elsevier Masson, 2014, 74 (C), pp.173-183. ⟨10.1016/j.anucene.2014.07.010⟩
International audience; Ruthenium species, volatilized from damaged fuel during a severe accident in a nuclear power plant, are radiotoxic and can be transported to the containment atmosphere in gaseous form. To limit the possible source term to the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce206520261bd47ddbdbb59706b5345b
https://doi.org/10.1016/j.anucene.2014.07.010
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3
Nucleation in a perforated tube diluter
Autor: Ari Leskinen, Jouni Pyykönen, Olli Sippula, Taisto Raunemaa, Mirella Miettinen, Jorma Jokiniemi
Publikováno v: Pyykönen, J, Miettinen, M, Sippula, O, Leskinen, A, Raunemaa, T & Jokiniemi, J 2007, ' Nucleation in a perforated tube diluter ', Journal of Aerosol Science, vol. 38, no. 2, pp. 172-191 . https://doi.org/10.1016/j.jaerosci.2006.11.006
This study investigates the effect of the dilution method on the formation of particles by nucleation during cooling. Nucleation in a perforated tube diluter was studied with experiments and models, using dibutylphthalate (DBP) as the nucleating agen
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f99f8659839aabc4d0564641bd7ce8bf
https://doi.org/10.1016/j.jaerosci.2006.11.006
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4
Modelling alkali chloride superheater deposition and its implications
Autor: Jouni Pyykönen, Jorma Jokiniemi
Publikováno v: Pyykönen, J & Jokiniemi, J 2003, ' Modelling alkali chloride superheater deposition and its implications ', Fuel Processing Technology, vol. 80, no. 3, pp. 225-262 . https://doi.org/10.1016/S0378-3820(02)00240-0
Alkali chlorides are often involved in superheater tube fouling and corrosion problems, especially during biofuel combustion. We have carried out a modelling study on fume particle and condensable alkali chloride vapour behaviour in superheater tube
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86a95e6243f7ac7340672e3de4ca42e0
https://cris.vtt.fi/en/publications/0a4ebb73-9934-4dc2-b5ad-42322b0f965a
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5
Alkali Salt Ash Formation in Four Finnish Industrial Recovery Boilers
Autor: Kauko Janka, Esa Vakkilainen, Jouni Pyykönen, Minna Aurela, Esko I. Kauppinen, Pirita Mikkanen, Jorma Jokiniemi
Publikováno v: Mikkanen, P, Kauppinen, E I, Pyykönen, J, Jokiniemi, J, Aurela, M, Vakkilainen, E & Janka, K 1999, ' Alkali salt ash formation in four Finnish industrial recovery boilers ', Energy & Fuels, vol. 13, no. 4, pp. 778-795 . https://doi.org/10.1021/ef980189o
Combustion aerosol measurement methods were introduced and applied for extensive ash formation studies at four operating recovery boilers in Finland. Ash particle mass size distributions determined with a Berner-type low-pressure impactor downstream
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b387738799424f56655072e3a061d2f
https://doi.org/10.1021/ef980189o
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6
The structure of nanoparticle nucleation in planar jets
Autor: Jouni Pyykönen, N. J. Murfield, Sean C. Garrick, Jorma Jokiniemi
Publikováno v: Murfield, N J, Pyykönen, J, Jokiniemi, J & Garrick, S C 2013, ' The structure of nanoparticle nucleation in planar jets ', Journal of Aerosol Science, vol. 62, pp. 1-14 . https://doi.org/10.1016/j.jaerosci.2013.03.003
The effects of large-scale mixing and vapor concentration on homogeneous nucleation rates are investigated via direct numerical simulation of dibutyl-phthalate (DBP) nucleation during cooling and mixing in three-dimensional planar jets. In the simula
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9e9d8efa8238d090a0f08587a39d8f4
https://cris.vtt.fi/en/publications/49cd8133-b754-488f-af53-dd73e662e1b0
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8
Modelling Ash Deposition during the Combustion of Low Grade Fuels
Autor: Jouni Pyykönen, Jussi Lyyränen, Esko I. Kauppinen, Jorma Jokiniemi, Pirita Mikkanen
Publikováno v: Applications of Advanced Technology to Ash-Related Problems in Boilers ISBN: 9781475792256
Deposit formation on external surfaces, such as heat exchangers, is a serious problem in many combustion processes. Deposits form from residue ash particles and from volatilized species that deposit either as tiny condensed particles or as vapour. Wi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04dbbd2c77db6574ae0781bd0d88d699
https://doi.org/10.1007/978-1-4757-9223-2_40
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