Combustion of alane and aluminum with water for hydrogen and thermal energy generation

Terrence Lee Connell, Jr., Grant Alexander Risha, Richard A. Yetter, Gregory Young, Dilip S. Sundaram, Vigor Yang

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The combustion of alane and aluminum with water in its frozen state has been studied experimentally and theoretically. Both nano and micron-sized particles are considered over a broad range of pressure. The linear burning rate and chemical efficiency are obtained using a constant-pressure strand burner and constant-volume cell, respectively. The effect of replacing nano-Al particles by micron-sized Al and alane particles are examined systematically with the additive mass fraction up to 25%. The equivalence ratio is fixed at 0.943. The pressure dependence of the burning rate follows the power law, r b = aPn, with n ranging from 0.41 to 0.51 for all the materials considered. The burning rate decreases with increasing alane concentration, whereas it remains approximately constant with cases containing only Al particles. The chemical efficiency ranged from 32% to 83%, depending on the mixture composition and pressure. Thermo-chemical analyses are conducted to provide insight into underlying causes of the decreased burning rate of the alanized compositions. A theoretical model is also developed to explore the detailed flame structure and burning properties. Reasonably good agreement is achieved with experimental observations.

Original languageEnglish (US)
Pages (from-to)1957-1965
Number of pages9
JournalProceedings of the Combustion Institute
Volume33
Issue number2
DOIs
StatePublished - Feb 3 2011

Fingerprint

burning rate
Thermal energy
Aluminum
thermal energy
Hydrogen
aluminum
Water
hydrogen
water
energy
burners
strands
pressure dependence
equivalence
flames
Chemical analysis
Fuel burners
causes
cells

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Physical and Theoretical Chemistry

Cite this

Connell, Jr., Terrence Lee ; Risha, Grant Alexander ; Yetter, Richard A. ; Young, Gregory ; Sundaram, Dilip S. ; Yang, Vigor. / Combustion of alane and aluminum with water for hydrogen and thermal energy generation. In: Proceedings of the Combustion Institute. 2011 ; Vol. 33, No. 2. pp. 1957-1965.
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Combustion of alane and aluminum with water for hydrogen and thermal energy generation. / Connell, Jr., Terrence Lee; Risha, Grant Alexander; Yetter, Richard A.; Young, Gregory; Sundaram, Dilip S.; Yang, Vigor.

In: Proceedings of the Combustion Institute, Vol. 33, No. 2, 03.02.2011, p. 1957-1965.

Research output: Contribution to journalArticle

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