中国电机工程学报2016，Vol.36Issue(12)：3256-3262,7.DOI:10.13334/j.0258-8013.pcsee.152612Z
带低温蓄热的高温太阳能S-CO2与ORC联合循环
High Temperature Solar S-CO2 and ORC Combined Cycle With Low Temperature Thermal Storage
摘要
Abstract
ABSTRACT:Supercritical CO2 Brayton cycle (S-CO2) is known as the most potential type of the next generation of the solar power station. However, high turbine inlet temperature brings difficulties to thermal storage. This paper presented a S-CO2 and organic Rankine cycle (ORC) combined system. The system generates power by S-CO2 part during the day and by ORC part during the night. Power source of the ORC part is the heat releasing of the S-CO2 part during the day and which is stored. Thereby, this solar power system could generates power continuously day and night, at the same time, difficulties brought by high temperature to thermal storage can be avoided. Simulating calculation of this paper indicates that siloxanes show better performance than other fluids in this system, the ORC part power output reaches 50% of the whole system power output when the ORC turbine inlet temperature is about 220-230℃, and the thermal efficiency of this system can be kept above 38%. Researches show that the S-CO2 and ORC combined system has the ability to keep high system efficiency, generate power continuously day and night, and avoid thermal storage at high temperature at the same time.关键词
分布式能源/太阳能/超临界 CO2布雷顿循环/有机朗肯循环/蓄热Key words
distributed energy/solar energy/supercritical CO2 Brayton cycle/organic Rankine cycle/thermal storage分类
能源科技引用本文复制引用
高炜,李红智,张一帆,姚明宇,白文刚,蒋世希..带低温蓄热的高温太阳能S-CO2与ORC联合循环[J].中国电机工程学报,2016,36(12):3256-3262,7.基金项目
国家自然科学基金项目(51406166)。Project Supported by National Natural Science Foundation of China (51406166) （51406166）
