Experimental Investigation for Enhancement of Solar Still Performance for Wastewater Treatment with the Influence of Encapsulated Phase Change Material

IF 3.6 4区工程技术 Q3 ENERGY & FUELS

Energy technology Pub Date : 2024-08-02 DOI:10.1002/ente.202400325

Mriduta Sharma, Vineet Veer Tyagi, Kapil Chopra, Richa Kothari

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Abstract

This research aims to investigate the single‐slope solar still for treating industrial wastewater using stearic acid as a phase change material. The phase change material is macroencapsulated in aluminum bottles. The experiment is run at 50% wastewater depth with 9 kg (scenario 1), 12 kg (scenario 2), and 15 kg (scenario 3) mass of stearic acid and without stearic acid (scenario 4). The total output productivity of 2247, 1600, and 1359 mL m−2 d−1 is achieved in scenarios 1, 2, and 3, respectively, out of which evening time productivity is 24.47%, 22.18%, and 28.39% increasing the operational time by 5 h. The system is well efficient in reducing total dissolved solids and total kjeldahl nitrogen and chemical oxygen demand with an efficiency of 90.45%, 98.57%, and 97.89%, respectively. A notable increase of 78.92%, 36.63%, and 32.67% in thermal efficiency is attained using 9, 12, and 15 kg mass of stearic acid respectively compared to traditional solar still. Comparing scenarios based on thermal efficiency, it can be concluded that thermal efficiency and mass of phase change material are inversely related and lower masses show better performance efficiency.

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利用封装相变材料提高太阳能蒸发器废水处理性能的实验研究

本研究旨在探讨利用硬脂酸作为相变材料处理工业废水的单斜太阳能蒸发器。相变材料被宏观封装在铝瓶中。实验在废水深度为 50%、硬脂酸质量为 9 千克（方案 1）、12 千克（方案 2）和 15 千克（方案 3）以及不含硬脂酸（方案 4）的情况下进行。方案 1、方案 2 和方案 3 的总产出生产率分别为 2247、1600 和 1359 mL m-2 d-1，其中晚间生产率分别为 24.47%、22.18% 和 28.39%，运行时间增加 5 h。与传统的太阳能蒸馏器相比，使用 9、12 和 15 千克质量的硬脂酸，热效率分别显著提高了 78.92%、36.63% 和 32.67%。根据热效率对各种方案进行比较，可以得出结论：热效率与相变材料的质量成反比，质量越小，性能效率越高。

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来源期刊

Energy technology ENERGY & FUELS-

CiteScore

7.00

自引率

5.30%

发文量

审稿时长

1.3 months

期刊介绍： Energy Technology provides a forum for researchers and engineers from all relevant disciplines concerned with the generation, conversion, storage, and distribution of energy. This new journal shall publish articles covering all technical aspects of energy process engineering from different perspectives, e.g., new concepts of energy generation and conversion; design, operation, control, and optimization of processes for energy generation (e.g., carbon capture) and conversion of energy carriers; improvement of existing processes; combination of single components to systems for energy generation; design of systems for energy storage; production processes of fuels, e.g., hydrogen, electricity, petroleum, biobased fuels; concepts and design of devices for energy distribution.