Modelling of heat transfer for progressive freeze desalination utilizing the vertical freezing apparatus

IF 4.9 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Thermal Sciences Pub Date : 2023-10-01 DOI:10.1016/j.ijthermalsci.2023.108427

Abdul Najim

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引用次数: 0

Abstract

This study presents an analytical study of heat transfer for progressive freeze desalination of brackish water, seawater, and brine utilizing the vertical freezing apparatus. An analytical model was formulated by applying a heat balance at the ice-liquid interface. The model accounted for a reduced ice-liquid interface temperature during the process. Moreover, the convective heat transfer coefficient for the forced flow (saltwater and coolant) situation was considered in the model. The solution of the model predicts the rate of ice formation, ice thickness, and overall heat transfer coefficient. The influence of saltwater stirring rate, coolant temperature, initial concentration, and immerse speed of the crystallizer into the coolant on the rate of ice formation, ice thickness, and overall heat transfer coefficient was investigated. The analytical data of the rate of ice formation was compared with the experimental findings from the literature. The analytical data and the experimental findings matched reasonably. A marginal error between analytical and experimental data was observed in the range of 5%–8%. The model assists in understanding the heat transfer during the process.

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利用垂直冷冻装置进行渐进式冷冻脱盐的传热模拟

本文介绍了利用垂直冷冻装置对苦咸水、海水和卤水进行渐进式冷冻脱盐的传热分析研究。在冰液界面处应用热平衡建立了解析模型。该模型考虑了在此过程中冰液界面温度的降低。此外，模型还考虑了强制流动(盐水和冷却剂)情况下的对流换热系数。该模型的解预测了冰的形成速率、冰的厚度和总传热系数。考察了盐水搅拌速率、冷却液温度、初始浓度、结晶器浸入冷却液速度对冰的形成速率、冰的厚度和总换热系数的影响。将冰形成速率的分析数据与文献中的实验结果进行了比较。分析数据与实验结果吻合较好。分析数据和实验数据之间的边际误差在5%-8%之间。该模型有助于理解过程中的热传递。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Thermal Sciences 工程技术-工程：机械

CiteScore

8.10

自引率

11.10%

发文量

531

审稿时长

55 days

期刊介绍： The International Journal of Thermal Sciences is a journal devoted to the publication of fundamental studies on the physics of transfer processes in general, with an emphasis on thermal aspects and also applied research on various processes, energy systems and the environment. Articles are published in English and French, and are subject to peer review. The fundamental subjects considered within the scope of the journal are: * Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of material (heterogeneous, composites, biological,...) and fluid flow * Forced, natural or mixed convection in reactive or non-reactive media * Single or multi–phase fluid flow with or without phase change * Near–and far–field radiative heat transfer * Combined modes of heat transfer in complex systems (for example, plasmas, biological, geological,...) * Multiscale modelling The applied research topics include: * Heat exchangers, heat pipes, cooling processes * Transport phenomena taking place in industrial processes (chemical, food and agricultural, metallurgical, space and aeronautical, automobile industries) * Nano–and micro–technology for energy, space, biosystems and devices * Heat transport analysis in advanced systems * Impact of energy–related processes on environment, and emerging energy systems The study of thermophysical properties of materials and fluids, thermal measurement techniques, inverse methods, and the developments of experimental methods are within the scope of the International Journal of Thermal Sciences which also covers the modelling, and numerical methods applied to thermal transfer.