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- W2890838887 abstract "Abstract Reversible solid oxide cells may be a cost competitive energy storage technology at the distributed scale. Leveraging C–O–H chemistry and operating near 600 °C allows the cells to be exothermic in both modes, improving efficiency and operability. This study characterizes ReSOC balance-of-plant hardware off-design performance to investigate component mode compatibility, the effect of tank dynamics, and part-load performance for a 100 kW/800 kWh plant. We also introduce a variable volume floating piston tank concept to improve energy storage density and evaluate operability advantages. Results show that with proper system design, balance-of-plant components are compatible, and tank dynamics have minimal impact when tanks are uninsulated and designed for storage near ambient temperature. System AC roundtrip efficiency is between 53% and 54%, depending on the tank technology selected and the compressor operating approach. Energy density is 84.4 kWh/m3 for rigid tanks, and 146.1 kWh/m3 for the variable volume tank concept at 100 bar storage pressure. This study also shows that ReSOC systems can maintain high efficiency at part-loads as low as 15% of rated capacity. Economic analysis of the system estimates an installed capital cost of $422–452/kWh, and a levelized cost of storage of 18.8–19.6 ¢/kWh, values competitive with state-of-the-art battery technology." @default.
- W2890838887 created "2018-09-27" @default.
- W2890838887 creator A5022540429 @default.
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- W2890838887 date "2018-11-01" @default.
- W2890838887 modified "2023-09-26" @default.
- W2890838887 title "Techno-economic and off-design analysis of stand-alone, distributed-scale reversible solid oxide cell energy storage systems" @default.
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- W2890838887 doi "https://doi.org/10.1016/j.enconman.2018.08.087" @default.
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