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Pool boiling of nanoparticle-modified surface with interlaced wettability

机译:具有隔行润湿性的纳米颗粒改性表面的池沸腾

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摘要

This study investigated the pool boiling heat transfer under heating surfaces with various interlaced wettability. Nano-silica particles were used as the coating element to vary the interlaced wettability of the surface. The experimental results revealed that when the wettability of a surface is uniform, the critical heat flux increases with the more wettable surface; however, when the wettability of a surface is modified interlacedly, regardless of whether the modified region becomes more hydrophilic or hydrophobic, the critical heat flux is consistently higher than that of the isotropic surface. In addition, this study observed that critical heat flux was higher when the contact angle difference between the plain surface and the modified region was smaller.
机译:这项研究调查了在具有各种交错润湿性的加热表面下的池沸腾传热。纳米二氧化硅颗粒用作涂层元素,以改变表面的隔行润湿性。实验结果表明,当表面的润湿性均匀时,临界热通量随表面的润湿性增加而增加;但是,当隔行地改变表面的润湿性时,无论改变的区域变得更亲水还是疏水,临界热通量始终高于各向同性表面。另外,该研究观察到,当平表面和改性区域之间的接触角差较小时,临界热通量较高。

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