Long Term Operation of Rechargeable High Temperature Solid Oxide Batteries

2014 ◽  
Vol 161 (9) ◽  
pp. A1297-A1301 ◽  
Author(s):  
André Leonide ◽  
Wolfgang Drenckhahn ◽  
Horst Greiner ◽  
Harald Landes
Keyword(s):  
High Temperature ◽  
Solid Oxide ◽  
Term Operation

scholarly journals A Mössbauer spectral study of degradation in La0.58Sr0.4Fe0.5Co0.5O3− after long-term operation in solid oxide electrolysis cells

2017 ◽  
Vol 312 ◽  
pp. 38-43 ◽  
Author(s):  
Abdelfattah Mahmoud ◽  
Mahmoud Al Daroukh ◽  
Marta Lipinska-Chwalek ◽  
Martina Luysberg ◽  
Frank Tietz ◽  
...  
Keyword(s):  
Spectral Study ◽  
Solid Oxide ◽  
Term Operation ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cells

Influence of Creep on Low-Cycle Fatigue Life Assessment of Ultra-Supercritical Steam Turbine Rotor

2014 ◽  
Author(s):  
W. Z. Wang ◽  
J. H. Zhang ◽  
H. F. Liu ◽  
Y. Z. Liu
Keyword(s):  
High Temperature ◽  
Steam Turbine ◽  
Fatigue Damage ◽  
Low Cycle Fatigue ◽  
Turbine Rotor ◽  
High Temperature Creep ◽  
Cycle Fatigue ◽  
Term Operation ◽  
Start Up

Linear damage method is widely used to calculate low-cycle fatigue damage of turbine rotor in the long-term operation without fully considering the interaction between creep and low cycle fatigue. However, with the increase of steam turbine pressure and temperature, the influence of high-temperature creep on the strain distribution of turbine rotor becomes significant. Accordingly, the strain for each start-up or shut-down process is different. In the present study, the stress and strain during 21 iterations of continuous start-up, running and shut-down processes was numerically investigated by using the finite element analysis. The influence of high-temperature creep on low cycle fatigue was analyzed in terms of equivalent strain, Mises stress and low cycle fatigue damage. The results demonstrated that the life consumption of turbine rotor due to low cycle fatigue in the long-term operation of startup, running and shutdown should be determined from the full-time coverage of the load of turbine rotor.

Development of High Power Density Solid Oxide Fuel Cells (SOFCs) for Long-Term Operation

2010 ◽  
Vol 654-656 ◽  
pp. 2875-2878 ◽  
Author(s):  
Norbert H. Menzler ◽  
Wolfgang Schafbauer ◽  
Feng Han ◽  
Oliver Büchler ◽  
Robert Mücke ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
High Power ◽  
High Efficiency ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Term Operation ◽  
Novel Technologies ◽  
Power Outputs

Solid oxide fuel cells (SOFCs) enable environmentally friendly energy to be produced with high efficiency. The market entry of SOFC systems depends on the functionality of the components and on the costs. The SOFC has not yet reached market maturity. This presentation focuses on the possibilities for manufacturing SOFCs with high power outputs and long-term durability by using manufacturing technologies feasible in industry. For the past 15 years, FZ Jülich has been developing large-size so-called anode-supported SOFCs (up to 200 x 200 mm²) with reproducibly high power output (> 2 A/cm² at 800°C). Novel technologies for high-capacity manufacturing such as tape casting and roller coating have been introduced. Additionally, newly developed thin-film techniques have led to power outputs of more than 3 A/cm² at 800°C and more than 1.5 A/cm² below 700°C. These high power densities open up new possibilities for the operation of SOFCs at low temperatures to ensure low degradation and therefore long lifetimes.

Chemical state identification of Ce3+/Ce4+ in the Sm0.2Ce0.8O2−δ electrolyte for an anode-supported solid oxide fuel cell after long-term operation

2012 ◽  
Vol 81 ◽  
pp. 185-188 ◽  
Author(s):  
Tai-Nan Lin ◽  
Maw-Chwain Lee ◽  
Rung-Je Yang ◽  
Jen-Chen Chang ◽  
Wei-Xin Kao ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Solid Oxide ◽  
Chemical State ◽  
Oxide Fuel ◽  
Term Operation ◽  
State Identification
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