在空隙膜蒸过程中,对膜表面附近的温度极化进行实验性研究
Lianqi Jing1, Jiaqi Sun1, Yaoling Zhang1
1School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China.
Membranes
|June 25, 2025
概括
温度极化通过减少有效温度差异,显著影响膜蒸性能. 这项研究监测了温度极化,以量化其对跨膜质量转移的影响,为优化膜系统提供了洞察力.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 分离过程 分离过程.
背景情况:
- 温度极化是膜蒸 (MD) 中的一个关键挑战.
- 它在膜表面附近产生温度梯度,减少质量转移的驱动力.
- 了解和量化温度极化对于提高MD效率至关重要.
研究的目的:
- 为了研究气隙膜蒸 (AGMD) 系统中温度偏振的监测.
- 分析温度极化对跨膜质量转移性能的影响.
- 介绍和讨论温度极化因子 (TPF) 作为量化其影响的指标.
主要方法:
- 在料模块内使用一组热电偶来监测温度配置文件.
- 实验测量了跨膜流量和温度梯度.
- 对温度极化因子 (TPF) 的分析,以量化其影响.
主要成果:
- 观察到温度极化减少了整个膜的有效温度差异.
- 由于温度极化,由于质量转移系数的理论估计值和实验值之间存在差异.
- 分析了温度偏振因子 (TPF),以量化其对跨膜流动的影响.
结论:
- 温度极化直接减少了MD的跨膜质量转移驱动力.
- 开发的监测方法有效地捕获温度极化配置文件.
- 温度偏振因子 (TPF) 为评估和减轻MD系统中的性能损失提供了有价值的指标.
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