TY - JOUR
T1 - Micro-tubular flame-assisted fuel cells running methane, propane and butane
T2 - On soot, efficiency and power density
AU - Milcarek, Ryan J.
AU - Ahn, Jeongmin
N1 - Funding Information:
This material is based upon work supported by an agreement with Syracuse University awarded by its Syracuse Center of Excellence for Environmental and Energy Systems with funding under prime award number DE-EE0006031 from the US Department of Energy and matching funding under award number 53367 from the New York State Energy Research and Development Authority (NYSERDA), under NYSERDA contract 61736 and NEXUS-NY under contract 03911 . This material is based upon work supported by the National Science Foundation Graduate Research Fellowship Program under Grant No. 1746928 .
Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2019/2/15
Y1 - 2019/2/15
N2 - A two-stage combustor with 1st-stage premixed fuel-rich combustion, integrated micro-tubular flame-assisted fuel cell (FFC) and 2nd-stage, fuel-lean combustion is described. The current state of research in direct flame fuel cells (DFFCs) is assessed and the dilemma of obtaining high power density, high electrical efficiency and no soot is discussed. A method for deriving the maximum theoretical electrical efficiency from a FFC based system is developed. A method for comparing methane, propane and butane in the two-stage combustor with integrated FFC is developed. Methane, propane and butane are tested at different equivalence ratios and flow rates to assess the power density and electrical efficiency. High power density (>300 mW cm−2) and high electrical efficiency (>1.2%) are achieved for equivalence ratios below 1.6. Methane is found to achieve higher power density and electrical efficiency at lower equivalence ratios compared to propane and butane. Soot formation is avoided by operating below the critical sooting limit.
AB - A two-stage combustor with 1st-stage premixed fuel-rich combustion, integrated micro-tubular flame-assisted fuel cell (FFC) and 2nd-stage, fuel-lean combustion is described. The current state of research in direct flame fuel cells (DFFCs) is assessed and the dilemma of obtaining high power density, high electrical efficiency and no soot is discussed. A method for deriving the maximum theoretical electrical efficiency from a FFC based system is developed. A method for comparing methane, propane and butane in the two-stage combustor with integrated FFC is developed. Methane, propane and butane are tested at different equivalence ratios and flow rates to assess the power density and electrical efficiency. High power density (>300 mW cm−2) and high electrical efficiency (>1.2%) are achieved for equivalence ratios below 1.6. Methane is found to achieve higher power density and electrical efficiency at lower equivalence ratios compared to propane and butane. Soot formation is avoided by operating below the critical sooting limit.
KW - Solid oxide fuel cell
KW - Syngas
KW - Two-stage combustion
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U2 - 10.1016/j.energy.2018.12.098
DO - 10.1016/j.energy.2018.12.098
M3 - Article
AN - SCOPUS:85059322896
SN - 0360-5442
VL - 169
SP - 776
EP - 782
JO - Energy
JF - Energy
ER -