In the high-scoring, prestigious Journal of Cleaner Production (IF 11,072, 140 points) an article entitled Efficiency analysis of a novel reversible solid oxide cell system with the secondary utilization of the stack off-gas: A model-based study was published, on the analysis of the possibility of improving the overall efficiency of the installation with stacks of solid oxide electrochemical (SOC) cells operating alternately in the fuel cell (SOFC) and electrolyser (SOE) modes, in accordance with the rSOC (reversible solid oxide cells) concept.
In the high-scoring, prestigious Journal of Cleaner Production (IF 11,072, 140 points) an article entitled Efficiency analysis of a novel reversible solid oxide cell system with the secondary utilization of the stack off-gas: A model-based study was published, on the analysis of the possibility of improving the overall efficiency of the installation with stacks of solid oxide electrochemical (SOC) cells operating alternately in the fuel cell (SOFC) and electrolyser (SOE) modes, in accordance with the rSOC (reversible solid oxide cells) concept.
As part of the work carried out, were proposed solutions for a new system of the rSOC installation process line, which increase the degree of thermal integration of the installation. As a result, it is possible to reduce the system's own needs by limiting the use of electricity in the water evaporation system. This solution is based on improving the efficiency of the use of exhaust gases from stacks of SOC cells working alternately as an electrolyser (SOE) and a fuel cell (SOFC). As a result of the proposed and analyzed changes in the configuration of the system, when the stack is operated at a temperature of 750°C and at a slight overpressure, it is possible to obtain the overall efficiency of the energy storage process in the power-to-gas-to-power process (so-called round-trip-efficiency) equal to 62.4%. In addition, the proposed and numerically analyzed solution allows to control the temperature distribution in the stack under conditions of increased gas flow in the air section of the SOC stack. The results of the work can be used to design control systems for rSOC systems and optimize their performance.
The research was conducted in cooperation with the Huazhong University of Science [&] Technology (Wuhan, China) and the Shenzhen Huazhong University of Science and Technology Research Institute (Shenzhen, China), as part of several projects. Issues related to the operation of SOC electrolysers in the rSOC mode, along with the analysis of the stack and installation operation are the subjects of research under the NEXTH2 project: Development of an innovative solid oxide electrolyser (SOE) produced by low-cost manufacturing techniques as a key element of modern energy storage systems based on the power-to-gas concept, financed under the LIDER XII program of the National Center for Research and Development (0003/L-12/2020).
Liu G., Kupecki J., Deng Z., L X., Efficiency analysis of a novel reversible solid oxide cell system with the secondary utilization of the stack off-gas: A model-based study, Journal of Cleaner Production, in press (IF 11.072), doi.org/10.1016/j.jclepro.2023.136570
Full text of the publication: https://www.sciencedirect.com/science/article/abs/pii/S095965262300728X