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RESEARCH PAPERS

A Study on the Spray Characteristics on Blended Bio-jet fuel and Jet A-1 fuel according to Pressure and Temperature

혼합바이오항공유와 Jet A-1 연료의 압력, 온도에 따른 분무특성 연구

Gyongwon Ryu1
,
Jeekeun Lee2
,
Hong Jip Kim3*
유 경원1
,
이 지근2
,
김 홍집3*
1Directorate, Aerospace Technology Research Institute, Agency for Defense Development, Korea
2School of Mechanical System Engineering, Jeonbuk National University, Korea
3School of Mechanical Engineering, Chungnam National University, Korea
*Corresponding Author
30 June 2024. pp. 41-54
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Abstract

This study is the result of an experimental analysis of the spray characteristics between mixed biofuel and Jet A-1 fuel researched and developed in Korea. Mixed biofuel is an alternative fuel candidate developed through the HEFA process led by the Agency for Defense Development. Pure biofuel has no aromatic component, almost no olefin component, and mostly comprises paraffin components. In this study, to examine whether the developed fuel can be used as a drop-in fuel, a spray test was conducted to investigate how the changed fuel component affects the atomization characteristics of the fuel by mixing it with the existing Jet A-1 fuel in a volume ratio of 50% in accordance with the ASTM D7566 standard. In particular, a spray test was carried out under low-temperature fuel conditions to examine the spray characteristics of the aircraft gas turbine engine under cold start conditions.

Keywords
HEFA Process
Bio jet Fuel
Drop-in Fuel

본 연구는 국내에서 연구 개발된 혼합바이오 항공유(Bio-jet50)와 Jet A-1 연료간 분무특성을 시험적으로 분석한 결과이다. 혼합바이오 항공유는 국내에서 HEFA(Hydro-processed Esters and Fatty Acids, 동식물성 유지의 수소첨가 전환반응) 공정으로 개발된 대체 연료 후보로서 순수 바이오항공유는 Aromatics 성분이 없으며, Olefins 구성 성분또한 거의 없고 대부분이 Paraffins 성분으로 구성된 연료이다. 본 연구에서는 개발된 연료를 Drop-in fuel로 활용할 수 있는지 검토하기 위한 일환으로 ASTM D7566의 규격에 따라 기존 Jet A-1 연료와 50:50의 비율로 혼합하여, 변경된 연료의 성분으로 인해 야기된 연료의 물리적 특성이 연료노즐 분무특성에 어떤 영향을 미치며, 항공엔진 연소기 관점에서 고려하여야 할 사항을 검토하였다. 특히 본 연구에서는 항공가스터빈 엔진의 저온시동 조건에서의 분무특성도 살펴보기 위하여 저온 연료 조건으로 분무시험을 실시하여 기존 Jet A-1 연료와의 비교시험을 실시하였다.

키워드
HEFA 공정
바이오 항공유
대체연료
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Information
  • Publisher :The Korean Society of Propulsion Engineers
  • Publisher(Ko) :한국추진공학회
  • Journal Title :Journal of the Korean Society of Propulsion Engineers
  • Journal Title(Ko) :한국추진공학회지
  • Volume : 28
  • No :3
  • Pages :41-54
  • Received Date : 2024-03-18
  • Revised Date : 2024-04-15
  • Accepted Date : 2024-04-20
  • DOI :https://doi.org/10.6108/KSPE.2024.28.3.041
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