Used engine lubrication oil as a renewable supplementary fuel for furnaces

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32 Citations (Scopus)


An experimental study on co-firing used engine lubrication oil (UELBO) with a gaseous fuel such as LPG in a small furnace is conducted. A wide range of fuel and air admission conditions is considered. It is found that when even a small amount of UELBO is co-fired with the gaseous fuel it significantly enhances thermal radiation capabilities of the gaseous fuel flame. For example, radiation capability of LPG flames can be enhanced by about 80% when UELBO at a rate of about 0.5 g/s is co-fired with 1 g/s LPG. UELBO-based results are also compared with ones obtained when a diesel fuel is co-fired with LPG in the same furnace, under operating conditions similar to those of UELBO/LPG tests. The comparisons confirm once more the significant role played by UELBO in enhancing radiation heat transfer from gaseous fuels flames. They also highlight UELBO as a renewable energy source with an attractive potential.

Original languageEnglish
Pages (from-to)3648-3653
Number of pages6
JournalEnergy Conversion and Management
Issue number12
Publication statusPublished - Dec 2008


  • Combustion
  • Furnace
  • Radiation
  • Used engine lubrication oil

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology


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