Solid oxide fuel cell or solid oxide electrolyzing cell and method for operating such a cell
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United States of America Patent
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Nov 28, 2017
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Nov 17, 2016
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Jun 11, 2012
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Abstract
A method for operating a solid oxide fuel cell having cathode-anode-electrolyte units, each including a first electrode for an oxidizing agent, a second electrode for combustible gas, and a solid electrolyte there between forming a metal interconnection between the CAE-units. The interconnect including a combustible gas distribution structure, and a second metallic gas distribution element having two channels for the oxidizing agent and separate channels for a tempering fluid. Cooling the second gas distribution element and a base layer of the first gas distribution element with the tempering fluid (O2). Measuring the first and second control temperatures T1 and T2. T1 being the tempering fluid temperature entering the fluid inlet side of the fuel cell. T2 being the tempering fluid temperature leaving the second gas distribution element. Where the amount of tempering fluid supplied to the second gas distribution element is controlled based on the difference between T1 and T2.
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