通过碳纳米结构复合膜进行电热界面蒸发
Noora Almarzooqi1, Alaa Shaheen1, Ricardo Nogueira2
1Center for Membranes and Advanced Water Technology (CMAT), Khalifa University, Abu Dhabi, 127788, United Arab Emirates; Department of Chemical Engineering, Khalifa University, Abu Dhabi, 127788, United Arab Emirates.
Chemosphere
|December 10, 2023
概括
表面加热膜蒸 (SHMD) 为高能耗需求提供了解决方案. 本研究展示了一种多壁碳纳米管 (MWCNT) 复合膜,用于SHMD应用中的高效电热加热.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 能源科学 能源科学
背景情况:
- 膜蒸 (MD) 面临着挑战,因为料水加热的高能耗要求.
- 表面加热膜蒸 (SHMD) 通过直接加热膜和料提供了一个可行的替代方案.
- SHMD利用太阳能或电能,绕过需要外部料加热的需求.
研究的目的:
- 探索使用多壁碳纳米管 (MWCNT) 基复合膜的电热驱动界面蒸发.
- 评估这种膜在高效SHMD应用中的潜力.
- 调查MWCNT复合膜的局部表面加热性能和能源效率.
主要方法:
- 一种复合膜的制造,其中包含多壁碳纳米管 (MWCNTs).
- 在MWCNT膜上施加电压以诱导电热加热.
- 测量蒸发水流量,能源效率和局部表面加热性能.
- 在不同电场方向下评估膜电阻和表面温度稳定性.
主要成果:
- 基于MWCNT的复合膜实现了高达2.34kg m-2h-1.1的蒸发水流.
- 记录了61%的能源效率,以及优秀的局部表面加热.
- 膜表现出稳定的性能,无论电场方向如何,电阻或温度没有显著变化.
结论:
- 开发的MWCNT复合膜显示了SHMD中节能和成本效益的局部加热的巨大潜力.
- 能源参数与现有电热MD系统的定量一致性验证了拟议的方法.
- 这项技术解决了MD的能源需求挑战,为更广泛的采用铺平了道路.
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