基于有机轮循环的热储能系统的热力学性能,使用不同的工作流体
Zhongrong Liang1, Guo Zheng1, Guowei Wu1
1Zhanjiang Electric Power Co., Ltd, China.
Heliyon
|January 10, 2025
概括
这项研究优化了使用工业废热的热集成热储能系统 (TIPTES). 在70°C时,MM工作流体实现了71.34%的往返效率,展示了TIPTES在能源转型方面的潜力.
科学领域:
- 储能 储能 储能 储能 储能 储能
- 热力学是一种热力学.
- 废热回收 废热回收 废热回收
背景情况:
- 全球能源转型和碳中和目标推动了对高效能源存储的需求.
- 热综合热储能系统 (TIPTES) 提供了大容量和灵活性,特别是使用低等级的热量.
- 工业废热为热能储存提供了一个重要的,未充分利用的热能资源.
研究的目的:
- 调查利用工业废热的TIPTES系统的性能.
- 分析工作流体和工作温度对系统效率的影响.
- 为了优化TIPTES配置,实现最大的往返效率.
主要方法:
- 模拟一个结合热 (HP) 和有机兰金循环 (ORC) 子循环的TIPTES系统.
- 在不同的蒸发和储存温度下对五种工作流体 (R245fa,异布坦,异坦,MM,R1336mzz(Z)) 的分析.
- 参数分析和单一目标优化专注于往返和能量效率.
主要成果:
- 随着蒸发温度 (T1) 的上升,往返和能量效率都会增加.
- MM工作流体实现了最高的性能 (71.34%的往返效率,在T1=70°C时37.42%的功率效率).
- 对异坦的最佳操作条件产生了71.60%的最大往返效率.
结论:
- TIPTES系统可用于利用工业废热,为能源转型做出贡献.
- 工作流体的选择和精确的温度控制 (T1,T8,T7) 对于最大限度地提高TIPTES效率至关重要.
- 该研究为开发和应用先进的TIPTES技术提供了理论见解.
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