期刊
ENERGY
卷 190, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2019.116315
关键词
Biofuel; Laminar burning speed; Constant-volume method; Cellular flame speed
资金
- National Natural Science Foundation of China [91741203, 51336008]
- Public Beneficial Technology Application Research Project of Science Technology Department of Zhejiang Province [2016C31102, 2016C31112]
- Fundamental Research Funds for the Central Universities of China [2013QNA4017]
- Hangzhou Science Committee of China [20162013A06]
A fast pyrolysis biofuel, mainly consisting to 98% of ethanol, ethyl acetate, diethyl ether, acetone and 2-butanone with mass ratios of 9:6:2:1:1, was catalytically produced from rice husk. A preliminary engine test demonstrated this biofuel has the possibility of being a gasoline blending stock. However, its fundamental burning features are not fully understood. This work presents the experimental investigations of the spherical propagating flame of a surrogate fuel representing the biofuel in a constant volume combustion chamber (CVCC). Tests were conducted at initial pressures of 0.1-0.4 MPa, initial temperatures of 358-418 K, and equivalence ratios of 0.7-1.4. Employing the constant volume method (CVM) allows determining laminar burning speeds (S-u) of this surrogate at conditions far beyond the initial conditions (0.1-0.8 MPa, 358-490 K). Power law fitting correlations between S-u and pressure were obtained via the constant volume method (CVM). Cellularity appears when pressure or temperature is high, and cellular burning speed was calculated by CVM as well. S-u determined via the constant pressure method (CPM) were compared with those from the CVM. Discrepancies between the results from the CVM and the CPM are within 15%, except at the conditions where flame cellularity appeared. Additionally, an explicit correlation of S-u was obtained from the experimental results. (C) 2019 Elsevier Ltd. All rights reserved.
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