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Performance analysis of salt reduction levels in indirect freeze desalination system with and without magnetic field exposure
Desalination ( IF 9.9 ) Pub Date : 2021-03-18 , DOI: 10.1016/j.desal.2021.115021
Hebatallah M. Abdelmoaty , Abdelmomen U. Mahgoub , Ahmad W. Abdeldayem

Freeze Desalination (FD) is considered an attractive desalination alternative due to its potentials to achieve reduced energy consumption compared to its counterparts. However, the physical parameters that affect the desalination process are not clearly understood. In this paper, novel experimental investigations are performed to identify statistically the dominant parameters to suspension freeze desalination systems without applying external magnetic field (MF), and parametrize the magnetic field effects on the desalting process and specify the influence of each parameter. Over 100 experiments were done to assess the performance of the imposed conditions on salt reduction levels. The methods include finding the marginal effects of FD parameters using Pearson’s correlation coefficient, formulating empirical Equation to describe the process, and inspecting the influence of MF density, configuration, and type (i.e., AC or DC). In the absence of MF exposure, the results reveal that the cooling rate below 12 °C (R12) is the dominant parameter with a correlation coefficient of 0.93. Whereas with MF exposure, the results do not reveal apparent positive effects; MF achieved 44.3% salt reduction compared to originally 48.7%. However, robust evaluation of each MF parameter's influence was introduced. This study offers new insights towards salt reduction enhancement in indirect FD systems.



中文翻译:

有和没有磁场暴露的间接冷冻淡化系统中减盐水平的性能分析

冷冻淡化(FD)被认为是一种有吸引力的海水淡化替代品,因为与其他同类产品相比,它具有降低能耗的潜力。但是,影响脱盐过程的物理参数尚不清楚。在本文中,进行了新颖的实验研究,以在不施加外部磁场(MF)的情况下从统计角度确定悬浮冷冻淡化系统的主要参数,并参数化磁场对脱盐过程的影响并指定每个参数的影响。进行了100多次实验,以评估施加条件对减少盐分含量的影响。这些方法包括使用Pearson相关系数找到FD参数的边际效应,建立经验方程式来描述过程,并检查MF密度,配置和类型(即AC或DC)的影响。在没有MF暴露的情况下,结果表明冷却速度低于12°C(R12)是主要参数,相关系数为0.93。MF暴露的结果并没有显示出明显的积极作用;MF的盐减少量为44.3%,而最初为48.7%。但是,引入了对每个MF参数影响的可靠评估。这项研究为间接FD系统中的减盐提供了新的见识。

更新日期:2021-03-18
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