Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
권호 표지
DOI QR코드

DOI QR Code

Preliminary Properties and Combustion Behavior of Solidified Ethanol Fuel

고형 에탄올 연료의 기본 물성치 및 연소특성

  • Kim, Hyemin (Department of Aeronautical Mechanical Design Engineering, Korea National University of Transportation) ;
  • Jo, Min Kyung (Department of Chemistry Education, Korea National University of Education) ;
  • Yang, Sung Ho (Department of Chemistry Education, Korea National University of Education)
  • 김혜민 (한국교통대학교 항공기계설계학과) ;
  • 조민경 (한국교원대학교 화학교육과) ;
  • 양성호 (한국교원대학교 화학교육과)
  • Received : 2018.12.06
  • Accepted : 2019.05.10
  • Published : 2019.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

Liquid and solid fuels currently in use have various pros and cons. As a result, researches are dedicated to produce a new form of fuel that utilizes the advantages and overcomes weakness of conventional fuels. In the present study, a new method for making solidified ethanol fuel is introduced, and its preliminary properties and combustion characteristic are observed. The solidified ethanol fuel was made through the production of agarose hydrogel, and its subsequent soaking into pure ethanol. The properties of the solidified ethanol fuel were quantitatively and qualitatively observed, and its validity and applicability discussed.

현대에 사용하는 다양한 종류의 액체 및 고체연료는 각각 장단점을 가지고 있으며, 이에 따라 많은 연구자들은 각 연료의 단점을 극복하고 장점만을 취하고자 새로운 형태의 연료를 연구하였다. 본 연구는 액체 에탄올을 고형화 하는 공정을 개발하고, 제조된 연료의 기초 물성치 및 연소특성을 관찰하는데 그 목적이 있다. 고형 에탄올은 아가로스 하이드로젤을 제조하고 이를 에탄올에 침전시키는 방법으로 제조하였다. 실험 조건으로 제조된 고형 에탄올 연료의 정성적/정량적 특성을 관찰하였으며, 이를 통해 제조된 연료의 유효성 및 고형 에탄올 연료의 실제 활용 가능성을 고찰하였다.

Keywords

OJSSBW_2019_v13n3_9_f0001.png 이미지

Fig. 1 Internal structure of hydrogel [7]

OJSSBW_2019_v13n3_9_f0002.png 이미지

Fig. 2 Procedure of solidified ethanol gel : Production of agarose/water solution (up, left), Solidification (up, right), soaking in liquid ethanol (down)

OJSSBW_2019_v13n3_9_f0003.png 이미지

Fig. 3 Appearance of solidified ethanol fuel with different agarose concentration

OJSSBW_2019_v13n3_9_f0004.png 이미지

Fig. 4 Appearance of solidified ethanol fuel before dry (up) and after dry (down)

OJSSBW_2019_v13n3_9_f0005.png 이미지

Fig. 5 Remained fuel mass ratio of solidified ethanol fuel over time

OJSSBW_2019_v13n3_9_f0006.png 이미지

Fig. 6 Heat of combustion of solidified ethanol fuel with various agarose concentration

OJSSBW_2019_v13n3_9_f0007.png 이미지

Fig. 7 Burning of Solidified ethanol fuel in atmospheric pressure and temperature condition

OJSSBW_2019_v13n3_9_f0008.png 이미지

Fig. 8 Mass ratio of residue in various agarose mass ratio fuels

Table 1. Qualitative and Quantitative measurement of fuel properties

OJSSBW_2019_v13n3_9_t0001.png 이미지

References

  1. K. K. Kuo, "Importance and Challenges of Hybrid Rocket Propulsion Beyond Year 2000," Invited von Karman Lecture in the Proc. of the 37th Israel Annual Conference on Aerospace Sciences, pp. 1-31, February 1997,
  2. J. Lee, G. Kim, J. Cho, S. Kim, H. Moon, H. Sung and J. Kim "A Study on the Local Regression Rate of Solid Fuel in Hybrid Rocket", 2008 Proc. of KSPE Spring Conference, pp.89-92, May 2008.
  3. B.V.S. Jyoti and S.W.Baek, "Rheological Characterization of Ethanolamine Gel Propellants", Journal of Energetic Materials, vol. 34, pp. 260-278, January, 2016. https://doi.org/10.1080/07370652.2015.1061617
  4. P.Nandagopalan, J.John, S.W.Baek, A.Miglani, and K.Ardhianto, "Shear-flow rheology and viscoelastic instabilities of ethanol gel fuels", Experimental Thermal and Fluid Science, Vol. 99, December, 2018.
  5. Y. Choi, J. Choi, M. Kim and K. Kim "Technical Review of Gel Propulsion System", Proc. of 2015 KSPE Fall Conference, pp. 351-355. December 2015.
  6. J.John, P.Nandagopalan, S.W.Baek, and A.Miglani, "Rheology of solid-like ethanol fuel for hybrid rockets: Effect of type and concentration of gellants", Fuel, Vol. 209, pp.96-108, December, 2017. https://doi.org/10.1016/j.fuel.2017.06.124
  7. www.aip.nagoya-u.ac.jp
  8. E. Ahmed, "Hydrogel: Preparation, characterization, and applications: A review", Jornal of Advanced Research, Vol 6, pp. 105-121, July 2015 https://doi.org/10.1016/j.jare.2013.07.006