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Optical studies of spray development and combustion of water-in-diesel emulsion and microemulsion fuels

Anna Lif (Institutionen för kemi- och bioteknik, Teknisk ytkemi) ; Raúl Ochoterena (Institutionen för tillämpad mekanik, Förbränning) ; Magnus Nydén (Institutionen för kemi- och bioteknik, Teknisk ytkemi ; SuMo Biomaterials) ; Sven Andersson (Institutionen för tillämpad mekanik, Förbränning) ; Ingemar Denbratt (Institutionen för tillämpad mekanik, Förbränning)
Fuel (0016-2361). Vol. 89 (2010), 1, p. 122-132.
[Artikel, refereegranskad vetenskaplig]

Physical properties, spray behaviour and combustion characteristics of a water-in-diesel emulsion, a water-in-diesel microemulsion and a conventional diesel fuel were investigated. The size of the drops, in the water-containing fuels, was measured by NMR diffusometry. Spray development and combustion were studied by optical methods in an optically accessed combustion vessel at conditions similar to those in a diesel engine. High speed shadowgraphs were employed to measure break-up, droplets penetration, vapour penetration and start of combustion. Combustion duration, flame temperature and relative soot concentration were determined by emission-based methods. Differences in spray behaviour suggest an enhanced atomisation for the water-containing fuels compared to regular diesel fuel. Moreover, reduced soot concentrations and flame temperature with increased combustion duration were noticed for the water-in-diesel fuels than for the regular diesel fuel.

Nyckelord: Spray behaviour; Water-in-diesel emulsion; Spray combustion



Denna post skapades 2010-10-27. Senast ändrad 2016-09-07.
CPL Pubid: 128198

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Teknisk ytkemi (2005-2014)
Institutionen för tillämpad mekanik, Förbränning
SuMo Biomaterials

Ämnesområden

Yt- och kolloidkemi
Energiteknik

Chalmers infrastruktur