[关键词]
[摘要]
等温压缩空气储能(ICAES)无需补燃、能源利用率高且碳排放低,在大规模储能领域具有重要应用前景。在建立喷雾的ICAES系统的液气传热模型基础上,通过数值方法分析了喷雾流量对ICAES液气传热特性的影响规律。结果表明:采用喷雾方法能够有效抑制压缩和膨胀过程的温度变化、强化液气传热并实现理想ICAES过程;增大喷雾流量能够降低压缩功耗、提高膨胀做功并降低停机储气过程压损,可提高系统指示效率和储能效率。
[Key word]
[Abstract]
Isothermal compressed air energy storage (ICAES) has an important application prospect in largescale energy storage field due to its advantages of high energy utilization rate, low carbon emission and no need for supplemantary combustion. The liquidgas heat transfer model of sprayed ICAES system was established, and the influence rule of spray flow rate on liquidgas heat transfer characteristics of ICAES was analyzed by using the numerical method. The results show that the adoption of spray can effectively suppress the temperature variation in the compression and expansion process, which is an effective measure to enhance the liquidgas heat transfer and achieve ideal ICAES process. Increasing spray flow rate can reduce compression power consumption, increase the expansion work output, reduce pressure loss during shutdown and air storage stage, and finally improve the indication efficiency and energy storage efficiency of the system.
[中图分类号]
TK124
[基金项目]
国家自然科学基金(52006202);河南省高等学校重点科研项目(20A470013)