Rich-burn, flame-assisted fuel cell, quick-mix, lean-burn (RFQL) combustor and power generation

Ryan J. Milcarek, Jeongmin Ahn

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Micro-tubular flame-assisted fuel cells (mT-FFC) were recently proposed as a modified version of the direct flame fuel cell (DFFC) operating in a dual chamber configuration. In this work, a rich-burn, quick-mix, lean-burn (RQL) combustor is combined with a micro-tubular solid oxide fuel cell (mT-SOFC) stack to create a rich-burn, flame-assisted fuel cell, quick-mix, lean-burn (RFQL) combustor and power generation system. The system is tested for rapid startup and achieves peak power densities after only 35 min of testing. The mT-FFC power density and voltage are affected by changes in the fuel-lean and fuel-rich combustion equivalence ratio. Optimal mT-FFC performance favors high fuel-rich equivalence ratios and a fuel-lean combustion equivalence ratio around 0.80. The electrical efficiency increases by 150% by using an intermediate temperature cathode material and improving the insulation. The RFQL combustor and power generation system achieves rapid startup, a simplified balance of plant and may have applications for reduced NOx formation and combined heat and power.

Original languageEnglish (US)
Pages (from-to)18-25
Number of pages8
JournalJournal of Power Sources
Volume381
DOIs
StatePublished - Mar 31 2018
Externally publishedYes

Fingerprint

combustion chambers
Combustors
fuel cells
Power generation
Fuel cells
flames
fuel combustion
equivalence
radiant flux density
heat of formation
solid oxide fuel cells
Solid oxide fuel cells (SOFC)
insulation
Insulation
Cathodes
chambers
cathodes
heat
Testing
Electric potential

Keywords

  • Flame-assisted fuel cell (FFC)
  • Fuel-rich combustion
  • Micro-combined heat and power
  • Micro-tubular solid oxide fuel cell (mT-SOFC)
  • Rich-burn quick-mix lean-burn (RQL) combustor
  • Two-stage combustor

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

Rich-burn, flame-assisted fuel cell, quick-mix, lean-burn (RFQL) combustor and power generation. / Milcarek, Ryan J.; Ahn, Jeongmin.

In: Journal of Power Sources, Vol. 381, 31.03.2018, p. 18-25.

Research output: Contribution to journalArticle

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