An experimental and theoretical study of the effect of suspended thermocouple on the single droplet evaporation

Han, Kai; Song, Guoqian; Ma, Xiaokang; Yang, Bo

doi:10.1016/j.applthermaleng.2015.12.022

Cited by 66 publications

(11 citation statements)

References 21 publications

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“…The effect of the thermocouple junction on the characteristics of the evaporation of a droplet of a binary solution of n-Dodecane and n-Hexadecane has been experimentally and theoretically investigated. The corresponding droplets with an initial diameter of 900 µm were placed on the thermocouple junction or on the end of the quartz fiber to record the values of the integral evaporation characteristics [24]. At low ambient temperatures (200 • C), the conductivity of the fiber mainly affects the early evaporation stage.…”

Section: Introductionmentioning

confidence: 99%

Rates of High-Temperature Evaporation of Promising Fire-Extinguishing Liquid Droplets

et al. 2019

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Differences in the rates of heating and evaporation of droplets with the component composition are important parameters of heat transfer processes and phase transformations. This paper presents the values of high-temperature (up to 600 °C) evaporation rates of droplets of promising fire-extinguishing compositions (water, bentonite suspension, bischofite solution, EA-5 solution, and foaming agent emulsion) at convective (in the air stream), conductive (on a heated surface), and radiation (in a muffle furnace) heating. A high-speed video recording system and tracking software algorithms are used. At identical initial sizes of droplets of fire-extinguishing suspensions, known as emulsions and solutions, the times of their complete evaporation are shown to differ 3.7 times when heating on the substrate, 1.25 times in the air flow, and 1.9 times in the muffle furnace. A general approximation expression is formulated, and the empirical constants are calculated to predict the evaporation rate of the droplets of extinguishing agents in a wide range of temperatures (up to 600 °C) and heat fluxes (up to 100 kW/m2), which are characteristic of forest fires. With the use of the experimental data obtained, it is possible to predict the completeness of evaporation of promising extinguishing liquids at different schemes of heat supply.

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Section: Introductionmentioning

confidence: 99%

Rates of High-Temperature Evaporation of Promising Fire-Extinguishing Liquid Droplets

et al. 2019

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“…They then concluded that using a quartz fiber of 50 µm diameter will not affect the evaporation process of a droplet. The experiments and numerical simulations of Han et al [13] agree that the rate of heat conduction through the fiber increases and then decreases with increasing the suspending fiber diameter. Shringi et al [14] numerically studied the effect of the support fiber on the evaporation of a droplet in a flow environment at high temperature and pressure conditions.…”

Section: Introductionmentioning

confidence: 62%

An analysis of the droplet support fiber effect on the evaporation process

Chauveau

Birouk

Halter

et al. 2019

International Journal of Heat and Mass Transfer

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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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“…Despite the simplicity of this levitation method, its intrusiveness can impact the droplet drying process [ 1 ]. It was shown that the filament contributes to 1% of the heat transferred to a 1 mm droplet and it also had an effect on the final particle diameter and the distribution of the components in the particle [ 1 , 15 , 18 ].…”

Section: Physics Of Particle Formation From a Drying Dropletmentioning

confidence: 99%

Unraveling Particle Formation: From Single Droplet Drying to Spray Drying and Electrospraying

et al. 2020

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Spray drying and electrospraying are well-established drying processes that already have proven their value in the pharmaceutical field. However, there is currently still a lack of knowledge on the fundamentals of the particle formation process, thereby hampering fast and cost-effective particle engineering. To get a better understanding of how functional particles are formed with respect to process and formulation parameters, it is indispensable to offer a comprehensive overview of critical aspects of the droplet drying and particle formation process. This review therefore closely relates single droplet drying to pharmaceutical applications. Although excellent reviews exist of the different aspects, there is, to the best of our knowledge, no single review that describes all steps that one should consider when trying to engineer a certain type of particle morphology. The findings presented in this article have strengthened the predictive value of single droplet drying for pharmaceutical drying applications like spray drying and electrospraying. Continuous follow-up of the particle formation process in single droplet drying experiments hence allows optimization of manufacturing processes and particle engineering approaches and acceleration of process development.

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An experimental and theoretical study of the effect of suspended thermocouple on the single droplet evaporation

Cited by 66 publications

References 21 publications

Rates of High-Temperature Evaporation of Promising Fire-Extinguishing Liquid Droplets

Rates of High-Temperature Evaporation of Promising Fire-Extinguishing Liquid Droplets

An analysis of the droplet support fiber effect on the evaporation process

Unraveling Particle Formation: From Single Droplet Drying to Spray Drying and Electrospraying

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