Investigation of Nucleate Pool Boiling of Saturated Pure Liquids and Ethanol-Water Mixtures on Smooth and Laser-Textured Surfaces
| العنوان: | Investigation of Nucleate Pool Boiling of Saturated Pure Liquids and Ethanol-Water Mixtures on Smooth and Laser-Textured Surfaces |
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| المؤلفون: | Iztok Golobič, Peter Zakšek, Peter Gregorčič, Matevž Zupančič |
| المصدر: | Nanoscale and Microscale Thermophysical Engineering. 24:29-42 |
| بيانات النشر: | Informa UK Limited, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Materials science, etanol, kapilarna dolžina, laser texturing, water, vrenje v bazenu, Analytical chemistry, Nucleation, laserski inženiring površin, 02 engineering and technology, Mole fraction, 01 natural sciences, lasersko strukturiranje, law.invention, chemistry.chemical_compound, law, Boiling, 0103 physical sciences, capillary length, General Materials Science, pool boiling, 010302 applied physics, Ethanol, fungi, technology, industry, and agriculture, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Laser, Atomic and Molecular Physics, and Optics, Capillary length, chemistry, Mechanics of Materials, binary mixtures, voda, ethanol, udc:66.02(045), 0210 nano-technology, laser surface engineering, binarne zmesi |
| الوصف: | Nucleate pool boiling experiments were performed on plain and five laser-textured stainless-steel foils using saturated pure water, 100% ethanol, 0.4% and 4.2% mole fraction ethanol – water mixtures. All laser-textured samples contained untreated, smooth 0.5 mm wide regions and intermediate textured surfaces, that differ in the width of the laser patterned regions (from 0.5 mm to 2.5 mm). For smooth surfaces, we measured significant decreases in average heat transfer coefficients (HTC) and increases in bubble activation temperatures in comparison with the laser-textured surfaces for all the tested working fluids. Significant enhancement in HTC (280%) on a textured heating surface with 2.5-mm-wide laser pattern was recorded using pure water. For pure ethanol, the highest enhancement of 268% was achieved on a heating surface with 1.5-mm-wide laser pattern. The highest enhancement of HTC for the tested binary mixtures was obtained using 2.0-mm wide-laser-textured regions (HTC improved by 235% and 279% for the 0.4% and 4.2% mixtures, respectively). Our results indicate that laser texturing can significantly improve boiling performance when the intervals of the laser-textured patterns are close to the capillary lengths of the tested fluids. |
| وصف الملف: | text/url |
| تدمد: | 1556-7273 1556-7265 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8012f782763f1fcd95ad1a7873615c9c https://doi.org/10.1080/15567265.2019.1689590 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....8012f782763f1fcd95ad1a7873615c9c |
| قاعدة البيانات: | OpenAIRE |
PDF full text from Publisher | تدمد: | 15567273 15567265 |
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