Investigation of freshwater production and temperature changes of various components of a conventional and enhanced solar desalination ponds

IF 6.4 2区工程技术 Q1 THERMODYNAMICS

Case Studies in Thermal Engineering Pub Date : 2025-06-07 DOI:10.1016/j.csite.2025.106465

Elnaz Kouh Zad , Farshad Farahbod , Omid Alizadeh

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引用次数: 0

Abstract

Solar desalination ponds are a simple yet efficient technology that utilizes solar energy to convert saline water into fresh water. This method is especially useful in arid and semi-arid regions with limited access to fresh water. The process comprises three stages: (a) evaporation, (b) condensation, and (c) collection of fresh water. In essence, solar ponds provide stable, large-scale heat storage, while parabolic collectors boost the heat intensity and expand the application range. When combined, they create a more versatile and efficient solar thermal energy system. In this study, three types of solar desalination ponds were investigated. The first type is a conventional pond. The second and third types of ponds are equipped with fixed and movable parabolic collectors. As shown in this study, the maximum radiation intensity occurs at 12:00 p.m. However, the maximum operating temperature for the solar desalination pond is observed at 1:00 p.m. Laboratory data indicate that the maximum radiation intensity at 12:00 p.m. is 1121.5 W/m², while the minimum radiation intensity is observed at 6:00 p.m. and equals 170 W/m². The results of this study show that the internal glass surface temperature is slightly higher than the external glass surface temperature. Results show that the range of internal and external glass surface temperature changes is between 39.5 °C to 54.6 °C and 39.1 °C–53.3 °C, respectively. This study shows that the maximum internal and external glass surface temperatures occur at 1:00 p.m., reaching 54.6 °C and 53.3 °C, respectively. This work shows that the minimum and maximum brine temperatures are 16.6 °C and 31.7 °C, occurring at 8:00 a.m. and 1:00 p.m., respectively. This study shows that the internal and external glass temperature variations range from 13.6 °C to 20.3 °C and 13 °C–20 °C. In addition, this research shows that the steam temperature varies between 19.1 °C and 40 °C.

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研究了常规和增强型太阳能海水淡化池各组成部分的淡水产量和温度变化

太阳能海水淡化池是一种利用太阳能将咸水转化为淡水的简单而高效的技术。这种方法在获得淡水有限的干旱和半干旱地区特别有用。这个过程包括三个阶段：(a)蒸发，(b)冷凝，和(c)收集淡水。从本质上讲，太阳能池提供稳定、大规模的蓄热，而抛物面集热器提高了热强度，扩大了应用范围。当它们结合在一起时，就创造了一个更通用、更高效的太阳能热能系统。本研究对三种类型的太阳能海水淡化池进行了研究。第一种是传统的池塘。第二类和第三类池分别装有固定式和移动式抛物面收集器。在本研究中，辐射强度最大值出现在中午12时。然而，太阳能海水淡化池的最高工作温度是在下午1时。实验数据表明，中午12点的最大辐射强度为1121.5 W/m2，下午6点的最小辐射强度为170 W/m2。本研究结果表明，内玻璃表面温度略高于外玻璃表面温度。结果表明，玻璃内外表面温度变化范围分别为39.5 ~ 54.6℃和39.1 ~ 53.3℃。本研究表明，玻璃表面内外温度最高发生在下午1:00，分别达到54.6°C和53.3°C。研究结果表明，海水温度的最低和最高分别为16.6°C和31.7°C，分别发生在上午8点和下午1点。本研究表明，玻璃内外温度变化范围为13.6℃~ 20.3℃和13℃~ 20℃。此外，本研究表明，蒸汽温度在19.1℃~ 40℃之间变化。

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

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.