Experimental analysis of solar still equipped with porous rubber sheet as energy storage material.

IF 3.9 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Scientific Reports Pub Date : 2025-03-09 DOI:10.1038/s41598-025-93148-5

Ravishankar Sathyamurthy

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Abstract

Due to technological advancements and an increase in population growth, the need for freshwater has escalated. Several techniques have been developed to produce fresh water, and one of the promising techniques is using the solar thermal desalination process. This study conducts experimental analysis on a single slope solar still employing porous rubber sheet thermal energy storage. Various experiments were performed with water masses ranging from 10 to 25 kg within the basin, comparing these to a similar setup lacking sensible heat energy storage. The results showed that the increased water mass in the basin reduced the distilled water produced from the Solar still (SS) with and without sensible thermal energy storage. The highest distilled water produced from the SS in both cases was at the lowest mass of water. The SS with porous rubber sheet produced maximum distilled water of 0.85 kg/m², whereas the SS without rubber sheet was found to be 0.75 kg/m² at the lowest water mass. Similarly, the highest distilled water collected occurred at different time intervals, and the mass of water in the basin as the stored energy is liberated to the water at different times of the day. The augmentation in the distilled water produced from the SS with a porous rubber sheet may be due to the higher absorption of heat and improved surface area of water with solar radiance. Furthermore, at the lowest water mass, the average daily efficiency of the modified SS with porous is higher, reaching about 55.6%, which is higher compared to the SS without porous rubber sheet as thermal energy storage, and the average daily efficiency decreases with increased water mass inside the basin on both the cases. The exergy analysis revealed that the average exergy efficiency improved to about 4.69% from 3.54% using a porous rubber sheet in the basin for the lowest water mass of 10 kg as compared to the SS without any material.

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用多孔橡胶板作为太阳能储能材料的实验分析。

由于技术进步和人口增长的增加，对淡水的需求已经升级。已经开发了几种生产淡水的技术，其中一种很有前途的技术是使用太阳能热脱盐工艺。本研究对采用多孔橡胶板蓄热的单坡太阳能蒸馏器进行了实验分析。在流域内进行了各种实验，水质量从10到25公斤不等，并将其与缺乏显热储能的类似设置进行了比较。结果表明：在有显热蓄能和无显热蓄能条件下，池内水量的增加降低了太阳蒸馏器蒸馏水的产生量。在两种情况下，SS蒸馏水的最高产量均为最低水质量。有多孔橡胶板的蒸馏水最大产水量为0.85 kg/m2，无多孔橡胶板的蒸馏水最低产水量为0.75 kg/m2。同样，蒸馏水的最高收集量出现在不同的时间间隔，而盆中的大量水作为储存的能量在一天中的不同时间被释放到水中。使用多孔橡胶片的SS生产的蒸馏水中的增加可能是由于更高的热量吸收和太阳辐射下水的表面积的改善。此外，在最低水质量下，多孔改性SS的平均日效率较高，达到55.6%左右，高于无多孔橡胶板作为储热材料的SS，并且随着池内水质量的增加，两种情况下的平均日效率均有所下降。火用分析显示，与没有任何材料的SS相比，在最低水质量为10 kg的情况下，在水池中使用多孔橡胶片的平均火用效率从3.54%提高到4.69%左右。

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

Scientific Reports Natural Science Disciplines-

CiteScore

7.50

自引率

4.30%

发文量

19567

审稿时长

3.9 months

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