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Title: Method and apparatus for thermal, mechanical, and electrical optimization of a solid-oxide fuel cell stack

Abstract

A solid-oxide fuel cell stack assembly comprising a plurality of sub-stacks, preferably two sub-stacks each containing one-half the total number of fuel cells. Cathode air and fuel gas are passed through the first sub-stack, wherein they are partially reacted and also heated. The exhaust cathode air and the exhaust fuel gas from the first sub-stack are directed to the respective inlets of the second sub-stack, becoming the supply cathode air and fuel gas therefor. A first heat exchanger in the flow paths between the sub-stacks and a second heat exchanger ahead of the sub-stacks can help to balance the performance of the two stacks. The result of dividing the number of cells into a plurality of sub-stacks, wherein the exhaust of one sub-stack becomes the supply for the next sub-stack, is that fuel efficiency and utilization are improved, thermal stresses are reduced, and electrical power generation is increased.

Inventors:
; ;
Issue Date:
Research Org.:
Delphi Technologies, Inc., Troy, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531608
Patent Number(s):
7,615,299
Application Number:
11/046,251
Assignee:
Delphi Technologies, Inc. (Troy, MI)
DOE Contract Number:  
FC26-02NT41246
Resource Type:
Patent
Resource Relation:
Patent File Date: 2005-01-28
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 42 ENGINEERING

Citation Formats

MacBain, John A., Kelly, Sean M., and Mergler, Christopher. Method and apparatus for thermal, mechanical, and electrical optimization of a solid-oxide fuel cell stack. United States: N. p., 2009. Web.
MacBain, John A., Kelly, Sean M., & Mergler, Christopher. Method and apparatus for thermal, mechanical, and electrical optimization of a solid-oxide fuel cell stack. United States.
MacBain, John A., Kelly, Sean M., and Mergler, Christopher. Tue . "Method and apparatus for thermal, mechanical, and electrical optimization of a solid-oxide fuel cell stack". United States. https://www.osti.gov/servlets/purl/1531608.
@article{osti_1531608,
title = {Method and apparatus for thermal, mechanical, and electrical optimization of a solid-oxide fuel cell stack},
author = {MacBain, John A. and Kelly, Sean M. and Mergler, Christopher},
abstractNote = {A solid-oxide fuel cell stack assembly comprising a plurality of sub-stacks, preferably two sub-stacks each containing one-half the total number of fuel cells. Cathode air and fuel gas are passed through the first sub-stack, wherein they are partially reacted and also heated. The exhaust cathode air and the exhaust fuel gas from the first sub-stack are directed to the respective inlets of the second sub-stack, becoming the supply cathode air and fuel gas therefor. A first heat exchanger in the flow paths between the sub-stacks and a second heat exchanger ahead of the sub-stacks can help to balance the performance of the two stacks. The result of dividing the number of cells into a plurality of sub-stacks, wherein the exhaust of one sub-stack becomes the supply for the next sub-stack, is that fuel efficiency and utilization are improved, thermal stresses are reduced, and electrical power generation is increased.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {11}
}

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Works referenced in this record:

Combination of low and high temperature fuel cell device
patent, September 2001


System and method for networking electrochemical devices
patent, May 1995


Multi-stage fuel cell system method and apparatus
patent, March 2000


Temperature regulating system for a fuel cell powered vehicle
patent, February 2001


Temperature control system for fuel cell powerplant
patent, February 1987


    Works referencing / citing this record:

    Fuel cell system with warming-up and method of operating the same
    patent, July 2011