The influence of solid insoluble impurities on heating and evaporation of suspension droplets
| Parent link: | International Journal of Thermal Sciences.— .— Amsterdam: Elsevier Science Publishing Company Inc. Vol. 220.— 2026.— Article number 110442, 15 p. |
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| Summary: | Title screen This paper presents the results of experimental studies on the heating and evaporation of suspension droplets under conditions close to those found in wastewater treatment heating chambers. The aim was to determine the mutual influence of both the chamber parameters — such as the temperature and velocity of the heating gases — and the suspension parameters, including the initial droplet size, impurity concentration, and thermophysical properties. As model impurities, the study employed most typical solid insoluble particles commonly present in industrial and domestic wastewater, such as aluminum oxide (metal oxide), titanium dioxide (alkaline earth metal oxide), clay (mineral), fine polymer powder (plastic), and coal sludge (carbon-based material). The study established the influence of various factors on the characteristics of the heating and evaporation processes: initial droplet size (Rd = 0.8–1.3 mm), gas temperature (330–680 K), flow velocity (2.8–3.5 m/s), heat flux density (3–68 kW/m2), thermophysical properties of the impurities, and their concentration within the droplets. Based on the obtained experimental data, mathematical models were formulated to describe the heating and evaporation rates as functions of the aforementioned parameters. Using these relationships, along with known data on heat flux and impurity concentration, it becomes possible to predict the conditions that ensure the maximum evaporation rate of the injected suspension volume. The practical significance of this work lies in establishing a foundation for developing solutions that enable efficient wastewater purification with energy and resource expenditures acceptable for real-world applications Текстовый файл AM_Agreement |
| Language: | English |
| Published: |
2026
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| Online Access: | https://doi.org/10.1016/j.ijthermalsci.2025.110442 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=684567 |