This study investigates the dynamic behavior of a solid oxide steam electrolyzer (SOSE) system without an external heat source that uses transient photovoltaic (PV) generated power as an input to produce compressed (to 3 MPa) renewable hydrogen to be injected directly into the natural gas network. A cathode-supported crossflow planar solid oxide electrolysis (SOE) cell is modeled in a quasi-three-dimensional thermo-electrochemical model that spatially and temporally simulates the performance of a unit cell operating dynamically. The stack is composed of 2500 unit cells that are assumed to be assembled into identically operating stacks, creating a 300 kW electrolyzer stack module. For the designed 300 kW SOSE stack (thermoneutral voltage achieved at design steady-state conditions), powered by the dynamic 0–450 kW output of PV systems, thermal management and balancing of all heat supply and cooling demands is required based upon the operating voltage to enable efficient operation and prevent degradation of the SOSE stacks. Dynamic system simulation results show that the SOSE system is capable of following the dynamic PV generated power for a sunny day (maximum PV generated power) and a cloudy day (highly dynamic PV generated power) while the SOSE stack temperature gradient is always maintained below a maximum set point along the stack for both days. The system efficiency based upon lower heating value of the generated hydrogen is between 0–75% and 0–78% with daily hydrogen production of 94 kg and 55 kg for sunny and cloudy days, respectively.
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November 2019
Research-Article
Dynamic Behavior of a Solid Oxide Steam Electrolyzer System Using Transient Photovoltaic Generated Power for Renewable Hydrogen Production
Alireza Saeedmanesh,
Alireza Saeedmanesh
Department of Mechanical and Aerospace Engineering,
Irvine, CA 92697-3975
e-mail: [email protected]
University of California, Irvine
,Irvine, CA 92697-3975
e-mail: [email protected]
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Dustin McLarty,
Dustin McLarty
School of Mechanical and Materials Engineering,
Pullman, WA 99164-2920
e-mail: [email protected]
Washington State University
,Pullman, WA 99164-2920
e-mail: [email protected]
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Jack Brouwer
Jack Brouwer
1
Department of Mechanical and Aerospace Engineering,
Irvine, CA 92697-3975
e-mail: [email protected]
University of California, Irvine
,Irvine, CA 92697-3975
e-mail: [email protected]
1Corresponding author.
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Alireza Saeedmanesh
Department of Mechanical and Aerospace Engineering,
Irvine, CA 92697-3975
e-mail: [email protected]
University of California, Irvine
,Irvine, CA 92697-3975
e-mail: [email protected]
Paolo Colombo
Dustin McLarty
School of Mechanical and Materials Engineering,
Pullman, WA 99164-2920
e-mail: [email protected]
Washington State University
,Pullman, WA 99164-2920
e-mail: [email protected]
Jack Brouwer
Department of Mechanical and Aerospace Engineering,
Irvine, CA 92697-3975
e-mail: [email protected]
University of California, Irvine
,Irvine, CA 92697-3975
e-mail: [email protected]
1Corresponding author.
Manuscript received October 5, 2018; final manuscript received March 18, 2019; published online April 12, 2019. Assoc. Editor: Soumik Banerjee.
J. Electrochem. En. Conv. Stor. Nov 2019, 16(4): 041008 (14 pages)
Published Online: April 12, 2019
Article history
Received:
October 5, 2018
Revision Received:
March 18, 2019
Accepted:
March 23, 2019
Citation
Saeedmanesh, A., Colombo, P., McLarty, D., and Brouwer, J. (April 12, 2019). "Dynamic Behavior of a Solid Oxide Steam Electrolyzer System Using Transient Photovoltaic Generated Power for Renewable Hydrogen Production." ASME. J. Electrochem. En. Conv. Stor. November 2019; 16(4): 041008. https://doi.org/10.1115/1.4043340
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