耦合火电余热与环境冷源的压缩二氧化碳储能系统及其运行方法
By combining waste heat from thermal power plants with ambient cold sources, the liquefaction and gasification processes of carbon dioxide energy storage systems are optimized, solving the problems of high-energy-consuming refrigeration and waste heat in cold regions, and improving the efficiency of energy storage systems and the operational stability and economy of thermal power units.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XI AN JIAOTONG UNIV
- Filing Date
- 2025-11-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing compressed carbon dioxide energy storage systems fail to effectively utilize abundant ambient cold sources in cold regions, resulting in high-energy-consuming refrigeration and waste of waste heat, which affects the peak-shaving efficiency and equipment lifespan of thermal power units.
By combining waste heat from thermal power plants with ambient cold sources, the liquefaction and vaporization process of carbon dioxide is optimized through pressurization by a working fluid pump and turbine expansion. This eliminates the high-energy-consuming refrigeration system, utilizes low-temperature cold sources to condense and liquefy carbon dioxide, and supplements heat energy through low-grade waste heat, thereby improving system efficiency.
It improves the round-trip efficiency of the energy storage system, reduces energy loss, lowers initial investment and equipment burden, and enhances the operational stability and economy of thermal power units.
Smart Images
Figure CN121205754B_ABST