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Keywords: heat exchangers
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Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. August 2010, 7(4): 041011.
Published Online: April 7, 2010
.... In this paper, this study is performed with the aid of a comprehensive steady state model of the SOFC, the after-burner, and the heat exchangers. In order to account for the large irreversibilities, the SOFC model is derived by the application of the second law of thermodynamics to the fuel cell control volumes...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. June 2010, 7(3): 031022.
Published Online: March 17, 2010
... cell and the heat exchangers. The gas-turbine is modeled through compressor and turbine performance maps, and the FC is modeled through a finite volume code. The results indicate the possibility to regulate effectively the plant power output acting on the turbine shaft speed, the air-to-fuel ratio...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. November 2009, 6(4): 041011.
Published Online: August 14, 2009
... for APUs destined to a wide application area (e.g., mild-hybrid cars, trains, ships, and airplanes). The core part of the model is the SOFC stack, surrounded by a number of ancillary devices: air compressor/blower, regulating pressure valves, heat exchangers, prereformer, and postburner. Since the thermal...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. November 2009, 6(4): 041004.
Published Online: August 11, 2009
...Jeongmin Ahn; Paul D. Ronney; Zongping Shao; Sossina M. Haile A thermally self-sustaining miniature power generation device was developed utilizing a single-chamber solid oxide fuel cell (SOFC) placed in a controlled thermal environment provided by a spiral counterflow “Swiss roll” heat exchanger...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Electrochem. En. Conv. Stor. August 2007, 4(3): 299–307.
Published Online: July 31, 2006
... and frequent start-stops. A simple two-dimensional numerical model for 1 kW -class SOFC systems was fabricated to study this problem. The model consists of a cylindrical SOFC stack, a prereformer on the stack, a heat exchanger for exhaust gas, and a thermal insulator that covers the stack and the prereformer...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Electrochem. En. Conv. Stor. November 2007, 4(4): 397–405.
Published Online: June 22, 2006
... constructed and operated at VTT Technical Research Centre of Finland and it comprises the following main components of the real test system: the autothermal reforming unit, SOFC stack situated inside a furnace, catalytic afterburner, and three heat exchangers. The constructed model has been verified against...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Electrochem. En. Conv. Stor. November 2007, 4(4): 435–440.
Published Online: April 19, 2006
.... A precommercial natural gas fuel processor has been chosen as hydrogen generator. This fuel processor contains all the elements—desulphurizer, steam reformer, CO shift converter, CO preferential oxidation (PROX) reactor, steam generator, burner, and heat exchanger—in one package. The reforming system has been...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Electrochem. En. Conv. Stor. November 2006, 3(4): 499–502.
Published Online: March 27, 2006
..., the system for a NH 3 fueled SOFC will have relatively low parasitic power losses and relative small heat exchangers for preheating the cathode air flow. In a stack with a coflow configuration and ASC cells, the temperature will be in the range of 700 - 800 ° C for the inlet and outlet...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Electrochem. En. Conv. Stor. May 2006, 3(2): 111–118.
Published Online: October 7, 2005
... cells, while a brief overview is provided about the proton exchange membrane (PEMFC). In all these systems, heat exchangers play an important and critical role in the thermal management of the fuel cell itself and the boundary components, such as the fuel reformer (when methane or natural gas is used...