Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study on Combustion and Emission Characteristics of Diesel Generator Fuelled with Coffee Ground Pyrolysis Oil

커피박 열분해유를 연료로 사용하는 디젤 발전기의 연소 및 배출물 특성에 관한 연구

  • PARK, JUNHA (Department of Mechanical Engineering, Soongsil University) ;
  • LEE, SEOKHWAN (Engine Research Team, Korea Institute of Machinery and Materials) ;
  • KANG, KERNYONG (Engine Research Team, Korea Institute of Machinery and Materials) ;
  • LEE, JINWOOK (Department of Mechanical Engineering, Soongsil University)
  • 박준하 (숭실대학교 기계공학과) ;
  • 이석환 (한국기계연구원 그린동력연구실) ;
  • 강건용 (한국기계연구원 그린동력연구실) ;
  • 이진욱 (숭실대학교 기계공학과)
  • Received : 2019.09.04
  • Accepted : 2019.12.30
  • Published : 2019.12.30
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Abstract

Due to the depletion of fossil fuels and environmental pollution, demand for alternative energy is gradually increasing. Among the various methods, a method to convert biomass into alternative fuel has been proposed. The bio-fuel obtained from biomass through pyrolysis process is called pyrolysis oil (PO) or bio-oil. Because PO is difficult to use directly in conventional engines due to its poor fuel properties, various methods have been proposed to upgrade pyrolysis-oil. The simplest approach is to mix it with conventional fossil fuels. However, due to their different polarity of PO and fossil fuel, direct mixing is impossible. To resolve this problem, emulsification of two fuels with a proper surfactant was proposed, but it costs additional time and cost. Alternatively, the use of alcohol fuels as an organic solvent significantly improve the fuel properties such as fuel stability, calorific value and viscosity. In this study, blends of diesel, n-butanol, and coffee ground pyrolysis oil (CGPO) which is one of the promising PO, was applied to diesel generator. Combustion and emissions characteristics of blended fuels were investigated under the entire load range. Experimental results show that ignition delay is similar to that of diesel at high load. Although, hydrocarbon and carbon monoxide emissions are comparable to diesel, significant reduction of nitrogen oxides and particulate matter emissions were observed.

Keywords

References

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