Control and experimental characterization of a methanol reformer for a 350 W high temperature polymer electrolyte membrane fuel cell system

Søren Juhl Andreasen, Søren Knudsen Kær, Simon Lennart Sahlin

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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Abstrakt

This work presents a control strategy for controlling the methanol reformer temperature of a 350 W high temperature polymer electrolyte membrane fuel cell system, by using a cascade control structure for reliable system operation. The primary states affecting the methanol catalyst bed temperature is the water and methanol mixture fuel flow and the burner fuel/air ratio and combined flow. An experimental setup is presented capable of testing the methanol reformer used in the Serenergy H3 350 Mobile Battery Charger; a high temperature polymer electrolyte membrane (HTPEM) fuel cell system. The experimental system consists of a fuel evaporator utilizing the high temperature waste gas from the cathode air cooled 45 cell HTPEM fuel cell stack. The fuel cells used are BASF P1000 MEAs which use phosphoric acid doped polybenzimidazole membranes. The resulting reformate gas output of the reformer system is shown at different reformer temperatures and fuel flows, using the implemented reformer control strategy. The gas quality of the output reformate gas is of HTPEM grade quality, and sufficient for supporting efficient and reliable HTPEM fuel cell operation with CO concentrations of around 1% at the nominal reformer operating temperatures. As expected increasing temperatures also increase the dry gas CO content of the reformate gas and decreases the methanol slip. The hydrogen content of the gas was measured at around 73% with 25% CO2.
OriginalsprogEngelsk
TidsskriftInternational Journal of Hydrogen Energy
Vol/bind38
Udgave nummer3
Sider (fra-til)1676-1684
Antal sider9
ISSN0360-3199
DOI
StatusUdgivet - 6 feb. 2013
BegivenhedZing Hydrogen and Fuel Cell Conference 2011 - Xcaret, Mexico
Varighed: 1 dec. 20115 dec. 2011

Konference

KonferenceZing Hydrogen and Fuel Cell Conference 2011
Land/OmrådeMexico
ByXcaret
Periode01/12/201105/12/2011

Emneord

  • brændselceller
  • metanol reformering
  • styring og regulering
  • PEM

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