scholarly journals Principles and applications of high temperature ion conducting ceramic in power generation - fuel cells and oxygen membranes

2016 ◽  
Vol 6 ◽  
pp. 41
Author(s):  
Jakub Kupecki
Keyword(s):  
Power Generation ◽  
Fuel Cells ◽  
High Temperature ◽  
Ion Conducting

In Situ Studies of Molecular Self-Assembling during the Formation of Ion-Conducting Membranes for Fuel Cells

2015 ◽  
Vol 792 ◽  
pp. 623-628 ◽  
Author(s):  
Kseniia N. Grafskaia ◽  
Denis V. Anokhin ◽  
Jaime J. Hernandez Rueda ◽  
Dmitriy A. Ivanov
Keyword(s):  
Fuel Cells ◽  
High Temperature ◽  
Molecular Architecture ◽  
Self Assembling ◽  
Ion Conducting ◽  
Microscopy Data ◽  
Conducting Membranes ◽  
Green Fuel ◽  
Synchrotron Beamlines

In present work a new setup for in situ studies of molecular self-assembling process for fabrication of ion-conducting membranes for “green” fuel cells was developed. Due to compactness, this unique setup can be used on the synchrotron beamlines. The GISAXS and optical microscopy data have shown the effectiveness of the control of molecular architecture by impact of high temperature, UV-irradiation and solvent vapors.

High-temperature fuel cells for power generation

1985 ◽  
Vol 25 (4) ◽  
pp. 477-486 ◽  
Author(s):  
W.J. Wepfer ◽  
M.H. Woolsey
Keyword(s):  
Power Generation ◽  
Fuel Cells ◽  
High Temperature

Recent advances in high-temperature carbon–air fuel cells

2017 ◽  
Vol 10 (2) ◽  
pp. 460-490 ◽  
Author(s):  
Tianyu Cao ◽  
Kevin Huang ◽  
Yixiang Shi ◽  
Ningsheng Cai
Keyword(s):  
Power Generation ◽  
Fuel Cells ◽  
High Temperature ◽  
Recent Advances ◽  
Carbon Based

High-temperature carbon–air fuel cells offer the most efficient and cleanest power generation from coal and other carbon-based materials.

Gas Turbine Cycles With Solid Oxide Fuel Cells—Part II: A Detailed Study of a Gas Turbine Cycle With an Integrated Internal Reforming Solid Oxide Fuel Cell

1994 ◽  
Vol 116 (4) ◽  
pp. 312-318 ◽  
Author(s):  
S. P. Harvey ◽  
H. J. Richter
Keyword(s):  
Power Generation ◽  
Fuel Cells ◽  
High Temperature ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide Fuel Cell ◽  
Energy Conversion ◽  
Gas Turbine ◽  
Solid Oxide ◽  
Oxide Fuel

In conventional energy conversion processes, the fuel combustion is usually highly irreversible, and is thus responsible for the low overall efficiency of the power generation process. The energy conversion efficiency can be improved if immediate contact of air and fuel is prevented. One means to prevent this immediate contact is the use of fuel cell technology. Significant research is currently being undertaken to develop fuel cells for large-scale power production. High-temperature solid oxide fuel cells (SOFC) have many features that make them attractive for utility and industrial applications. However, in view of their high operating temperatures and the incomplete nature of the fuel oxidation process, such fuel cells must be combined with conventional power generation technology to develop power plant configurations that are both functional and efficient. Most fuel cell cycles proposed in the literature use a high-temperature fuel cell running at ambient pressure and a steam bottoming cycle to recover the waste heat generated by the fuel cell. With such cycles, the inherent flexibility and shorter start-up time characteristics of the fuel cell are lost. In Part I of this paper (Harvey and Richter, 1994), a pressurized cycle using a solid oxide fuel cell and an integrated gas turbine bottoming cycle was presented. The cycle is simpler than most cycles with steam bottoming cycles and more suited to flexible power generation. In this paper, we will discuss this cycle in more detail, with an in-depth discussion of all cycle component characteristics and losses. In particular, we will make use of the fuel cell’s internal fuel reforming capability. The optimal cycle parameters were obtained based on calculations performed using Aspen Technology’s ASPEN PLUS process simulation software and a fuel cell simulator developed by Argonne National Laboratory (Ahmed et al., 1991). The efficiency of the proposed cycle is 68.1 percent. A preliminary economic assessment of the cycle shows that it should compare favorably with a state-of-the-art combined cycle plant on a cost per MWe basis.

scholarly journals Thermodynamic Modeling and Performance Analysis of a Combined Power Generation System Based on HT-PEMFC and ORC

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6163
Author(s):  
Hyun Sung Kang ◽  
Myong-Hwan Kim ◽  
Yoon Hyuk Shin
Keyword(s):  
Power Generation ◽  
Fuel Cells ◽  
High Temperature ◽  
Thermal Management ◽  
Heat Generation ◽  
Current Density ◽  
Waste Heat ◽  
Operating Temperature ◽  
Generation System ◽  
Power Generation System

Recently, the need for energy-saving and eco-friendly energy systems is increasing as problems such as rapid climate change and air pollution are getting more serious. While research on a power generation system using hydrogen energy-based fuel cells, which rarely generates harmful substances unlike fossil fuels, is being done, a power generation system that combines fuel cells and Organic Rankine Cycle (ORC) is being recognized. In the case of High Temperature Proton Exchange Membrane Fuel Cell (HT-PEMFC) with an operating temperature of approximately 150 to 200 °C, the importance of a thermal management system increases. It also produces the waste heat energy at a relatively high temperature, so it can be used as a heat source for ORC system. In order to achieve this outcome, waste heat must be used on a limited scale within a certain range of the temperature of the stack coolant. Therefore, it is necessary to utilize the waste heat of ORC system reflecting the stack thermal management and to establish and predict an appropriate operating range. By constructing an analytical model of a combined power generation system of HT-PEMFC and ORC systems, this study compares the stack load and power generation performance and efficiency of the system by operating temperature. In the integrated lumped thermal capacity model, the effects of stack operating temperature and current density, which are important factors affecting the performance change of HT-PEMFC and ORC combined cycle power generation, were compared according to operating conditions. In the comparison of the change in power and waste heat generation of the HT-PEMFC stack, it was shown that the rate of change in power and waste heat generation by the stack operating temperature was clearly changed according to the current density. In the case of the ORC system, changes in the thermal efficiency of the ORC system according to the operating temperature of the stack and the environmental temperature (cooling temperature) of the object to which this system is applied were characteristic. This study is expected to contribute to the establishment of an optimal operation strategy and efficient system configuration according to the subjects of the HT-PEMFC and ORC combined power generation system in the future.

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