为了研究储热罐内热量的分配和利用对先进绝热压缩空气储能系统性能的影响,提高系统在可再生能源并网应用中的效率与经济性,提出5种热量分配方案。采用数值模拟的方法,比较系统5种方案下的热力学与经济学特性,并研究关键参数对不同方案下系统性能的影响。结果表明：热量分配比越大,循环效率越高,而年利润率越小。对于5种热量分配方案,循环效率和年利润率随储气室最大压比的增大均存在最小值,且存在最佳的换热器效能,使得循环效率和年利润率具有最大值。压缩机入口温度的变化对5种热量分配方案的循环效率和年利润率的影响各不相同。系统年利润率随着燃料价格的升高而减少,而随着产品价格的升高而增加。
Abstract
In order to investigate the effect of heat distribution and utilization in heat storage tank on the performance of advanced adiabatic compressed air energy storage system, and improve the efficiency and economy of the system in the grid-connected application of renewable energy, five heat distribution schemes are proposed. By means of numerical simulation, the thermodynamic and economic characteristics of the system under five schemes are compared, and the influence of key parameters on the performance of the system under different schemes is also studied. The results show that the higher the heat distribution ratio, the higher the cycle efficiency and the smaller the annual profit margin. For the five heat distribution schemes, cycle efficiency and annual profit margin exists the minimum values with the increase of the maximum pressure ratio of gas storage chamber. And there is an optimal heat exchanger effectiveness, so that the cycle efficiency and annual profit margin have the maximum. The effect of the inlet temperature of the compressor on the cycle efficiency and annual profit margin of the five heat distribution schemes is different. Moreover, the annual profit margin decreases as fuel price increases while increases as product price increases.
关键词
压缩空气储能 /
数值模拟 /
性能分析 /
冷热电三联产 /
热量分配
Key words
compressed air energy storage /
numerical simulation /
performance analysis /
combined cooling,heating and power trigeneration /
heat distribution
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基金
河北省自然科学基金（E2018502059）
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