Investigation of startup, performance and cycling of a residential furnace integrated with micro-tubular flame-assisted fuel cells for micro-combined heat and power

Ryan J. Milcarek, Vincent P. DeBiase, Jeongmin Ahn

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Solid Oxide Fuel Cells (SOFCs) offer advantages for micro-Combined Heat and Power (μCHP), but currently suffer from slow startup (>1 h) and limited thermal cycling which reduces the applications, energy savings and economics. In this work, a micro-Tubular SOFC stack is integrated into a residential furnace to create a micro-Tubular Flame-assisted Fuel Cell (mT-FFC) μCHP system. A high power density of 202 mW cm−2 is reported operating in synthesis gas generated from fuel-rich combustion of natural gas/air. Unlike previous reports, instabilities in the polarization are attributed to low temperature of the oxygen reduction reaction at the cathode. The mT-FFC stack achieved peak power density in 6 min after ignition. 200 thermal cycles at an average heating rate of 215 °C.min−1 and average cooling rate of 176 °C.min−1 were conducted and a low degradation rate of 0.0325 V per 100 cycles per fuel cell was achieved. Low NOx emissions (10 ppm) and high combined efficiency is reported.

Original languageEnglish (US)
Article number117148
JournalEnergy
Volume196
DOIs
StatePublished - Apr 1 2020

Keywords

  • Flame-assisted fuel cell (FFC)
  • Micro-combined heat and power (μCHP)
  • Micro-tubular SOFCs (mT-SOFCs)
  • Solid oxide fuel cell (SOFC)

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Pollution
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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