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Novel aerosol insert design utilizing inert compressed gas

Burby, ML, Nasr, GG, Hawthorne, G and Asmuin, N 2014, 'Novel aerosol insert design utilizing inert compressed gas' , Atomization and Sprays, 24 (12) , pp. 1035-1063.

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Household aerosols are self-contained handheld devices for spraying products such as air fresheners, hairspray, surface cleaners, polishes, and deodorants. Industrial aerosols are similar devices for spraying: cleaners, lubricants, paints, and adhesives. They also have hospital and specific medical uses for spraying coagulants and disinfectants. Worldwide around 20 billion devices are manufactured annually and the UK has a major share of this market, manufacturing 5 billion units, second only to the USA. Led by the Californian Air Resources Board (CARB) in 2001, there is mounting pressure for the use of liquefied gas propellants (volatile organic compounds) in aerosol cans to be banned. This paper addresses the challenges of creating a fine spray using a pressurized inert gas (non-VOC) as the propellant for household aerosols. The spray produced has to achieve a relative performance to that of a traditional fine spray VOC propellant aerosol with regard to droplet size, reach, cone angle, and flow rate. The findings of this work have demonstrated that to achieve a sub-50-µm (Dv,50) spray is extremely challenging when using compressed inert gas and single fluid alone. However, by bleeding air into the insert arrangement, a spray of 24 µm (Dv,50) can be obtained and this is comparable in droplet size to that produced by a traditional fine spray VOC aerosol.

Item Type: Article
Uncontrolled Keywords: Aerosol, insert, Malvern, two-fluid atomizer, non-VOC
Schools: Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre (SIRC)
Journal or Publication Title: Atomization and Sprays
Publisher: Begel House, Inc.
Refereed: Yes
ISSN: 1044-5110
Related URLs:
Funders: Salford Valve Company Ltd (Salvalco)
Depositing User: Dr Amir Nourian
Date Deposited: 03 Jul 2015 16:28
Last Modified: 29 Oct 2015 00:10
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