Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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One-Dimensional Modeling of Hydrogen Generator

수소발생기의 일차원 모델링

  • Park, Jae Hyun (Department of Aerospace and Software Engineering and Research Center for Aircraft Parts Technology, Gyeongsang National University) ;
  • Lee, Hyojin (Graduate School of Mechanical and Aerospace Engineering, Gyeongsang National University) ;
  • Valderrama, Edgar Willy Rimarachin (Graduate School of Mechanical and Aerospace Engineering, Gyeongsang National University) ;
  • Yim, Chungsik (Aerospace Division, Seyeon E&S) ;
  • Yang, Heesung (Aerospace Division, Seyeon E&S)
  • Received : 2017.05.17
  • Accepted : 2017.08.26
  • Published : 2018.04.01
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Abstract

This paper presents the one-dimensional model of a hydrogen generator, where the alkali solution was supplied from the top to the dry aluminum powders. Hydrogen was produced as the solution moved downward and reacted with aluminum. The species conservation equations were considered for the hydrogen gas and alkali solution, while the energy conservation equation was applied to the gas-liquid-solid mixture as a single medium. The gas rising velocity and liquid penetration velocity were also included in the theoretical approach. The developed code was validated with the experimental data of the hydrogen production amount and collector pressure. Additionally, the model successfully predicted the various reactor properties, such as the concentrations, volume fractions, and temperatures, and is expected to help significantly in the design of a novel hydrogen generator.

본 연구에서는 수소발생기에 대한 일차원 모델링을 수행하였다. 본 연구에서 고려하고 있는 수소발생기에서 알칼리용액은 위로부터 건조한 알루미늄 파우더로 공급되며, 알칼리용액이 아래방향으로 진행함에 따라 알루미늄과 반응하여 수소가 발생한다. 수소기체와 알칼리용액에 대한 화학종보존방정식과 기체-액체-고체 혼합물에 대한 에너지보존방정식을 고려하였으며, 기체의 상승속도와 액체의 하강속도는 이론적인 접근법을 이용하여 고려하였다. 개발된 프로그램은 수소발생량 및 수소포집기압력과 비교하여 검증한다. 또한, 개발된 프로그램은 농도, 부피분율, 온도 등 반응대의 내부 물성변화를 성공적으로 예측하였으며, 이는 혁신적인 수소발생기의 설계에 많은 도움을 줄 수 있을 것으로 사료된다.

Keywords

References

  1. Risha, G.A., Son, S.F., Yetter, R.A., Yang, V. and Tappan, B.C., "Combustion of Nano-Aluminum and Liquid Water," Proceedings of the Combustion Institute, Vol. 31, No. 2, pp. 2029-2036, 2007. https://doi.org/10.1016/j.proci.2006.08.056
  2. Shmelev, V., Yang, H. and Yim, C., "Hydrogen Generation by Reaction of Molten Aluminum with Water Steam," International Journal of Hydrogen Energy, Vol. 41, No. 33, pp. 14562-14572, 2016. https://doi.org/10.1016/j.ijhydene.2016.05.277
  3. Soler, L., Macanas, J., Munoz, M. and Casado, J., "Aluminum and Aluminum Alloys as Sources of Hydrogen for Fuel Cell Applications," Journal of Power Sources, Vol. 169, No. 1, pp. 144-149, 2007. https://doi.org/10.1016/j.jpowsour.2007.01.080
  4. Elitzur, S., Rosenband, V. and Gany, A., "Study of Hydrogen Production and Storage Based on Aluminum-Water Reaction," International Journal of Hydrogen Energy, Vol. 39, No. 12, pp. 6328-6334, 2014. https://doi.org/10.1016/j.ijhydene.2014.02.037
  5. Chen, X., Zhao, Z., Liu, X., Hao, M., Chen, A. and Tang, Z., "Hydrogen Generation by the Hydrolysis Reaction of Ball-Milled Aluminium-Lithium Alloys," Journal of Power Sources, Vol. 254, pp. 345-352, 2014. https://doi.org/10.1016/j.jpowsour.2013.12.113
  6. Jia, Y., Shen, J., Meng, H., Dong, Y., Chai, Y. and Wang, N., "Hydrogen Generation Using a Ball-Milled Al/Ni/NaCl Mixture," Journal of Alloys and Compounds, Vol. 588, pp. 259-264, 2014. https://doi.org/10.1016/j.jallcom.2013.11.058
  7. Xu, F., Sun, L., Lan, X., Chu, H., Sun, Y., Zhou, H., Li, F., Yang, L., Si, X., Zhang, J., Walter, S. and Gabelica, Z., "Mechanism of Fast Hydrogen Generation from Pure Water Using Al-SnCl2 and Bi-Doped Al-SnCl2 Composites," International Journal of Hydrogen Energy, Vol. 39, No. 11, pp. 5514-5521, 2014. https://doi.org/10.1016/j.ijhydene.2014.01.154
  8. Yavor, Y., Goroshin, S., Bergthorson, J.M., Frost, D.L., Stowe, R. and Ringuette, S., "Enhanced Hydrogen Generation from Aluminum-Water Reactions," International Journal of Hydrogen Energy, Vol. 38, No. 35, pp. 14992-15002, 2013. https://doi.org/10.1016/j.ijhydene.2013.09.070
  9. Hiraki, T., Takeuchi, M., Hisa, M. and Akiyama, T., "Hydrogen Production from Waste Aluminum at Different Temperatures, with LCA," Materials Transactions, Vol. 46, No. 5, pp. 1052-1057, 2005. https://doi.org/10.2320/matertrans.46.1052
  10. Razavi-Tousi, S.S. and Szpunar, J.A., "Modification of the Shrinking Core Model for Hydrogen Generation by Reaction of Aluminum Particles with Water," International Journal of Hydrogen Energy, Vol. 41, No. 1, pp. 87-93, 2016. https://doi.org/10.1016/j.ijhydene.2015.11.080
  11. Balaji, R., Senthil, N., Vasudevan, S., Ravichandran, S., Mohan, S., Sozhan, G., Madhu, S., Kennedy, J., Pushpavanam, S. and Pushpavanam, M., "Development and Performance Evaluation of Proton Exchange Membrane (PEM) based Hydrogen Generator for Portable Applications," International Journal of Hydrogen Energy, Vol. 36, No. 2, pp. 1399-1403, 2011. https://doi.org/10.1016/j.ijhydene.2010.10.072
  12. Tate, T., "On the Magnitude of a Drop of Liquid Formed Under Different Circumstances," Philosophical Magazine Series 4, Vol. 27, No. 181, pp. 176-180, 1864. https://doi.org/10.1080/14786446408643645
  13. Yavor, Y., "Aluminum-Water Reaction Mechanism - Modeling of the Different Reaction Stages," 14th International Energy Conversion Engineering Conference, Salt Lake City, U.T., U.S.A., AIAA 2016-5021, Jul. 2016.
  14. Kuo, K.K., Principles of Combustion, 2nd ed., Wiley-Interscience, New York, N.Y., U.S.A., Ch. 3, 2005.
  15. Hu, H., Qiao, M., Pei, Y., Fan, K., Li, H., Zong, B. and Zhang, X., "Kinetics of Hydrogen Evolution in Alkali Leaching of Rapidly Quenched Ni-Al Alloy," Applied Catalysis A: General, Vol. 252, No. 1, pp. 173-183, 2003. https://doi.org/10.1016/S0926-860X(03)00416-2
  16. Corapcioglu, M.Y., Cihan, A. and Drazenovic, M., "Rise Velocity of an Air Bubble in Porous Media: Theoretical Studies," Water Resources Research, Vol. 40, No. 4, W04214, 2004. https://doi.org/10.1029/2003WR002618
  17. Roosevelt, S.E. and Corapcioglu, M.Y., "Air bubble migration in a granular porous medium: Experimental studies," Water Resources Research, Vol. 34, No. 5, pp. 1131-1142, 1998. https://doi.org/10.1029/98WR00371
  18. Ergun, S. and Orning, A.A., "Fluid Flow through Randomly Packed Columns and Fluidized Beds," Industrial & Engineering Chemistry, Vol. 49, No. 6, pp. 1179-1184, 1949.