Performance evaluation of a HDH desalination system using direct contact packed towers: experimental and mathematical modeling study

IF 2.3 Q2 Environmental Science

Journal of Water Reuse and Desalination Pub Date : 2022-02-04 DOI:10.2166/wrd.2022.095

Taleb Zarei, M. Miroliaei

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引用次数: 5

Abstract

Humidification–dehumidification desalination (HDH) is one of the suitable methods for desalination of saline and brackish water in a small scale. In this research, a HDH desalination method with a direct contact dehumidifier has been analyzed theoretically and experimentally. The setup consists of two similar packing towers for humidification and dehumidification, 10 inches in diameter, which are filled up to 1 m with Rushing packing. In this new HDH configuration, seawater and freshwater recirculation has been used in humidifier and dehumidifier sections, respectively. A steady-state mathematical model based on the mass and energy equations for each system component is presented. The effect of various input parameters on the freshwater production, gain output ratio (GOR) and specific energy consumption has been investigated. The results revealed that the inlet seawater and air temperature to the humidification tower had the highest and the lowest effect on the produced freshwater, respectively. Also, the maximum value of the GOR is 3.3, which is obtained in the equilibrium condition of the dehumidifier. The experiments show that the freshwater production of the proposed HDH device is 300 L/day, which can provide water for domestic consumption of a small family.

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使用直接接触填料塔的HDH脱盐系统的性能评估：实验和数学建模研究

加湿-除湿脱盐（HDH）是小规模脱盐盐水和微咸水的合适方法之一。在本研究中，对直接接触式除湿器的HDH脱盐方法进行了理论和实验分析。该装置由两个类似的加湿和除湿填料塔组成，直径为10英寸，用Rushing填料填充1米。在这种新的HDH配置中，海水和淡水再循环已分别用于加湿器和除湿器部分。基于每个系统部件的质量和能量方程，提出了一个稳态数学模型。研究了各种输入参数对淡水产量、增益输出比和比能耗的影响。结果表明，进入加湿塔的海水和空气温度对产生的淡水的影响分别最高和最低。此外，GOR的最大值为3.3，这是在除湿器的平衡条件下获得的。实验表明，所提出的HDH装置的淡水产量为300L/天，可以为小家庭的生活用水提供水源。

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

Journal of Water Reuse and Desalination ENGINEERING, ENVIRONMENTAL-WATER RESOURCES

CiteScore

4.30

自引率

0.00%

发文量

审稿时长

16 weeks

期刊介绍： Journal of Water Reuse and Desalination publishes refereed review articles, theoretical and experimental research papers, new findings and issues of unplanned and planned reuse. The journal welcomes contributions from developing and developed countries.