恒壁温储气模型下先进绝热压缩空气储能系统性能分析

发布时间：2018-04-14 19:39

  本文选题：分布式能源 + 恒壁温储气模型　； 参考：《中国电机工程学报》2016年12期

【摘要】：为更准确地计算先进绝热压缩空气储能系统的性能参数并探究循环过程中储气室内温度、压力变化情况,基于热力学第一定律与理想气体方程,提出更切合实际的恒壁温储气模型,构建整个储能系统热力学模型。基于此模型,在给定的空气压缩机与透平功率下,对系统性能进行了计算;分析了储气压比、储释能间隔时间等参数对系统性能的影响;直观地揭示了循环过程中储气室内温度、压力随时间变化情况。结果表明:等幅增大储气压比与降低储气压比差可提高系统循环效率,只提高最大储气压比会使效率下降;随对流换热系数增大,压缩功增大,膨胀功与循环效率出现"拐点";储释能间隔时间增大会降低系统效率,当对流换热系数较小时,对该时间的选择还应考虑储气参数的循环稳定性。
[Abstract]:In order to calculate more accurately the performance parameters of the advanced adiabatic compressed air energy storage system and to investigate the change of temperature and pressure in the gas storage chamber during the cycle, based on the first law of thermodynamics and the ideal gas equation,A more practical constant wall temperature gas storage model is proposed and the thermodynamic model of the whole energy storage system is constructed.Based on this model, the performance of the system is calculated under the given air compressor and turbine power, and the effect of the parameters such as the ratio of storage pressure to air pressure and the interval time between storage and release energy on the system performance is analyzed.The change of temperature and pressure of gas storage chamber with time is revealed intuitively.The results show that the cycle efficiency of the system can be improved by increasing the ratio of storage to air pressure and decreasing the difference of the ratio of storage air pressure to equal amplitude, but only by increasing the ratio of maximum storage pressure to air pressure, and the compression work increases with the increase of convection heat transfer coefficient.When the heat transfer coefficient of convection is small, the cycle stability of gas storage parameters should be taken into account when the heat transfer coefficient of convection is small.
【作者单位】： 电站设备状态监测与控制教育部重点实验室(华北电力大学);
【基金】：中央高校基本科研业务专项资金项目(2015MS107)~~
【分类号】：TM73
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本文编号：1750732