The properties of sustainable aviation fuel II: Laminar flame speed

Warit Abi Nurazaq, Wei Cheng Wang, Jhe Kai Lin

研究成果: Article同行評審

4 引文 斯高帕斯(Scopus)

摘要

This work reports on the study of flame characteristics and laminar flame speeds (LFS) of sustainable aviation fuel (SAF) and conventional fuels (Jet-A1 and JP-5) premixed with air at elevated pressures. The experimental facilities included the constant volume combustion chamber (CVCC) and used a shadowgraph system to quantify the LFS. The effects of equivalence ratio and ambient pressure on the flame speeds were examined by varying the initial pressure 1, 2, and 3 bar (in addition to 0.1 and 0.5 bar for flame morphology) and the equivalence ratio from 0.8 to 1.8 at 423 K of temperature. The results indicated that JP-5 had the highest LFS value (90.1 cm/s) compared to the other two fuels. Jet-A1 and SAF have the same LFS result, which is less than a 15% difference, excluding the high equivalence ratio and initial pressure. The higher the initial pressure, the lower the LFS for all conditions. The equivalence ratio of 1.2 resulted in the highest LFSs. In addition, in order to understand the laminar flame speed of SAF and its combustion chemical kinetics. Therefore, the sensitivity analysis of SAF was performed. Results indicated that the chain branching reaction (O2 + H[dbnd]OH + O) positively enhanced flame speed as equivalence ratios (φ) increased, while chain propagation reactions, notably O2 + H[dbnd]HO2 (+M), had a negative effect on flame speed, particularly diminishing their influence at higher φ due to limited oxygen availability.

原文English
文章編號130946
期刊Energy
294
DOIs
出版狀態Published - 2024 5月 1

All Science Journal Classification (ASJC) codes

  • 土木與結構工程
  • 建模與模擬
  • 可再生能源、永續發展與環境
  • 建築與營造
  • 燃料技術
  • 能源工程與電力技術
  • 污染
  • 機械工業
  • 一般能源
  • 管理、監督、政策法律
  • 工業與製造工程
  • 電氣與電子工程

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