Abstract
The energy consumption in China’s industrial terminals includes electricity, steam, and compressed air, with electricity and steam being the primary carriers. To achieve the peak carbon emission in the industrial sector, it is essential to address the challenges of energy storage and steam production in industrial parks. Utilizing a novel energy storage technology known as the Carnot battery, which operates on thermodynamic cycles, this method addresses the mismatch between production demands and traditional energy conversion equipment within industrial parks. When electricity generation exceeds demand, the surplus is converted into thermal energy for storage. In times of insufficient energy supply, stored thermal energy is utilized to drive a heat engine for power generation or directly supply heat to the surroundings. This paper introduces a steam Carnot battery based on sensible heat storage, capable of utilizing green electricity from industrial parks for charging and achieving the output of both electricity and steam during discharge. The EBSILON model of the steam Carnot battery is constructed to investigate steam output, round trip efficiency, and Coefficient of Performance (COP) under different configurations. The results indicate that reciprocating efficiency increases with the number of steam compression stages, reaching a maximum of 43.95%. At this state, the COP is 3.07, and the system can output steam at 150°C.
