Improving water vapor flux in Direct Contact Membrane Distillation (DCMD) has garnered significant attention due to its suitability for various water-based applications. This study investigated the enhancement of vapor flux in DCMD using Sulzer SMV static mixers. Results showed that, across all conditions, the flux of DCMD with the SMV static mixer increased by almost 69 %. Additionally, the results indicated that incorporating the SMV static mixer in DCMD had a more significant effect on vapor flux at lower inlet velocities for both feed and permeate flows, as well as at higher inlet temperature differences between the feed and permeate flows. The investigation of membrane characteristics demonstrated that, at higher thermal conductivity, the effect of the SMV static mixer was better than at lower thermal conductivity. Moreover, the results showed that the effect of the SMV static mixer on the behavior of vapor flux across different membrane porosities and pore radii remained consistent. The results for static mixer characteristics indicated that both vapor flux and pressure drop increased with the number of elements. As the number of elements rose from 1 to 6, vapor flux increased by 26 %, and pressure drop rose by a factor of 6.6. In contrast, increasing the distance between sheets led to decreases in both flux and pressure drop. When the sheet distance expanded from 2 mm to 3 mm, flux decreased by 3.6 %, and pressure drop was reduced by 37.5 %.

中文翻译：

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采用苏尔寿 SMV 静态混合器对直接接触膜蒸馏 （DCMD） 性能的影响：三维计算流体动力学 （CFD） 研究


由于适用于各种水基应用，提高直接接触膜蒸馏 （DCMD） 中的水蒸气通量受到了广泛关注。本研究调查了使用苏尔寿 SMV 静态混合器增强 DCMD 中的蒸汽通量。结果表明，在所有条件下，SMV 静态混合器的 DCMD 磁通量增加了近 69%。此外，结果表明，在 DCMD 中加入 SMV 静态混合器对进料流和渗透流的较低入口速度以及进料流和渗透流之间入口温差较高的蒸汽通量影响更显着。膜特性研究表明，在较高热导率下，SMV 静态混合器的效果优于较低热导率。此外，结果表明，SMV 静态混合器对不同膜孔隙率和孔径的蒸汽通量行为的影响保持一致。静态混合器特性的结果表明，蒸汽通量和压降都随着元素数量的增加而增加。当元素数量从 1 增加到 6 时，蒸汽通量增加了 26%，压降增加了 6.6 倍。相比之下，增加片材之间的距离会导致磁通量和压降降低。当板材距离从 2 mm 扩大到 3 mm 时，磁通量下降了 3.6 %，压降降低了 37.5 %。