【摘要】 基于热力学原理,构建出完整的液化空气储能热力系统循环图,建立了热力计算分析模型,研究了循环的具体组成、状态点的确定及热力性能评价指标,分析了影响循环性能的重要因素。结果表明:循环中压缩及吸热过程是影响循环整体热力性能的关键;系统可利用处于环境温度附近的低品质热能,提高能量利用效率;随着多变系数的增大,循环效率增大,但循环最高温度也在增大,在确定参数时应综合考虑循环的经济性与安全性。更多还原

【Abstract】 Based on the thermodynamic theory, a complete Liquefied Air Energy Storage(LAES) thermodynamic system diagram was constructed, a thermodynamic analysis model was established, the specific composition of the cycle, the determination of the state points and the evaluation index of thermal performance were studied, and the important factors affecting the cycle performance was analyzed. The results show that the compression and the endothermic process are the key factors affecting the overall thermal performance of the cycle; LAES uses low-quality thermal energy near ambient temperature to improve energy efficiency; as the multi-variable coefficient increases, the cycle efficiency increases. However, the maximum temperature of the cycle is also increasing, so the economics and safety of the cycle should be considered comprehensively when determining the parameters.更多还原