可再生能源2025，Vol.43Issue(9)：1180-1188,9.
跨临界CO2内部过冷并行压缩制冷系统热力学分析与应用评估
Thermodynamic analysis and application evaluation of transcritical CO2 internal subcooling parallel compression refrigeration system
摘要
Abstract
To improve the performance of CO2 refrigeration systems used in commercial supermarkets,a parallel compression refrigeration system with an internal subcooler was constructed.Through simulation,the effects of high pressure and ambient temperature on system performance were studied,and a comprehensive analysis of the refrigeration system was conducted from the perspectives of energy efficiency,economic viability,and environmental impact.The results indicated that the low-temperature refrigeration performance of the internal subcooling parallel compression refrigeration system was superior,with a maximum high pressure of approximately 10 MPa.The optimal COP was improved by 53.8%and 32.7%compared to the baseline boost refrigeration system and the parallel compression refrigeration system,respectively,demonstrating significant optimization effects.In hot regions,the annual performance coefficient of the CO2 refrigeration system was relatively low;however,employing the internal subcooling parallel compression configuration can significantly enhance refrigeration performance.The system's total lifecycle cost and annual revenue requirement were minimal in Kunming and maximal in Guangzhou,with local electricity prices being the primary influencing factor.Additionally,the total equivalent warming effect of this system was reduced by 6.8%to 16.2%compared to other refrigeration systems.关键词
跨临界CO2制冷/并行压缩/内部过冷/年性能系数/全生命周期/总当量变暖影响Key words
transcritical CO2 refrigeration/parallel compression/internal subcooler/annual performance factor/life cycle cost/total equivalent warming impact分类
通用工业技术引用本文复制引用
张凯钰,杨俊兰,王天宇,李梦希..跨临界CO2内部过冷并行压缩制冷系统热力学分析与应用评估[J].可再生能源,2025,43(9):1180-1188,9.基金项目
天津市自然科学基金项目(24JCYBJC00730) （24JCYBJC00730）
天津市科技特派员项目(22YDTPJC00020). （22YDTPJC00020）
