Liquid carbon dioxide energy storage system
The liquefied carbon dioxide energy storage system is shown in the figure. During energy storage, the liquid carbon dioxide is reduced by the throttle valve and vaporized by heat absorption in the regenerator. The cold energy is stored in the regenerator, compressed by the multistage compressor and cooled for heat exchange between stages, and then cooled to liquid storage at room temperature in the cooler. When the energy is released, the high-pressure liquid carbon dioxide is heated by the multistage reheater and the expansion machine does work, cooled to normal temperature by the cooler, and stored after cooling and liquefaction in the cold accumulator.
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