Influence of total contamination of Jatropha curcas oil on deposits and performance of plant oil pressure stoves

Publikations-Art

Kongressbeitrag

Autoren

Karaj, S; Müller J

Erscheinungsjahr

2012

Tagungsname

20th European Biomass Conference

Tagungsort

Milan, Italy

Tagungsdatum

18 - 22 June 2012

Schlagworte

Jatropha

At the Universität Hohenheim (Stuttgart, Germany) a plant oil pressure stove ’Protos’ was developed in cooperation with Bosch und Siemens Hausgeräte GmbH (Munich, Germany). The stove shows satisfactory performance and reliability; however, combustion deposits are formed inside the vaporizer when using plant oil as fuel. The objective of this study was to investigate the influence of total contamination content of J .curcas oil on the technical performance and formation of deposits in the plant oil pressure stove. Four test fuels with 55, 116, 638 and 1126 mg/kg of total contamination content were prepared. Combustion trials were carried out in three replicates.
The results show lowest deposits for test fuel with 55 and 116 mg/kg contamination resulting in 1.46 and 1.42 g deposits per kg of consumed oil. A positive correlation between deposits and total contamination was found. Consumption of J. curcas oil was ranging from 0. 21 to 0.29 kg/h according increasing total contamination content. User friendliness in terms of low requirements of vaporizer cleaning time increased with increase of total contamination content and thermal efficiency decreased from 51 to 43 %. Therefore use of plant oil with low total contamination content is recommended for better operating of pressure stoves.