Effects of employing external condensers or phase-change materials on the performance of different solar still systems with different modifications

IF 6.4 2区工程技术 Q1 THERMODYNAMICS

Case Studies in Thermal Engineering Pub Date : 2025-04-21 DOI:10.1016/j.csite.2025.106181

Shaaban M. Shaaban , Ali Basem , Suha A. Mohammed , Wissam H. Alawee , Hasan Sh Majdi , A. Aldabesh , Z.M. Omara , M.M. Younes

{"title":"Effects of employing external condensers or phase-change materials on the performance of different solar still systems with different modifications","authors":"Shaaban M. Shaaban , Ali Basem , Suha A. Mohammed , Wissam H. Alawee , Hasan Sh Majdi , A. Aldabesh , Z.M. Omara , M.M. Younes","doi":"10.1016/j.csite.2025.106181","DOIUrl":null,"url":null,"abstract":"<div><div>The yield of the solar still has been increased using a variety of techniques. The condensing surface's temperature has consequently risen, this negatively impacts the speed of condensing. Numerous techniques have been investigated to cool the condensing surface, such as water cooling, air cooling, adding phase-changing material (PCM), or an external condenser with a suction fan. Analysing previous investigations on cooling glass covers using an external condenser or PCM to ascertain which is more effective was the primary objective of this study. Also, this review aims to promote greater innovation in this field by highlighting promising directions for further investigation. The findings of the literature review indicate that cooling glass with a fan and condensing vapor in the feed water tank works better than cooling glass utilizing Nano PCM. Besides, the thermal efficiency ranges resulting from the addition of an external condenser or PCM are 42 %–72.4 % and 50.7 %–65 %, respectively. And the increases in solar still production when PCM or an external condenser is added range from 26 % to 44 % and 25 %–68 %, respectively. Where the lowest expenses per liter of freshwater generated by external condenser or PCM systems are 0.01 $ and 0.011 $, respectively. Consequently, as compared to PCM systems, solar still systems with an external condenser have higher output, better efficiency, and a lower cost per liter of freshwater.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"71 ","pages":"Article 106181"},"PeriodicalIF":6.4000,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Case Studies in Thermal Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214157X25004411","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"THERMODYNAMICS","Score":null,"Total":0}

引用次数: 0

Abstract

The yield of the solar still has been increased using a variety of techniques. The condensing surface's temperature has consequently risen, this negatively impacts the speed of condensing. Numerous techniques have been investigated to cool the condensing surface, such as water cooling, air cooling, adding phase-changing material (PCM), or an external condenser with a suction fan. Analysing previous investigations on cooling glass covers using an external condenser or PCM to ascertain which is more effective was the primary objective of this study. Also, this review aims to promote greater innovation in this field by highlighting promising directions for further investigation. The findings of the literature review indicate that cooling glass with a fan and condensing vapor in the feed water tank works better than cooling glass utilizing Nano PCM. Besides, the thermal efficiency ranges resulting from the addition of an external condenser or PCM are 42 %–72.4 % and 50.7 %–65 %, respectively. And the increases in solar still production when PCM or an external condenser is added range from 26 % to 44 % and 25 %–68 %, respectively. Where the lowest expenses per liter of freshwater generated by external condenser or PCM systems are 0.01 $ and 0.011 $, respectively. Consequently, as compared to PCM systems, solar still systems with an external condenser have higher output, better efficiency, and a lower cost per liter of freshwater.

查看原文本刊更多论文

采用外聚光器或相变材料对不同改型太阳能蒸馏系统性能的影响

利用各种技术，太阳能的产量仍在增加。冷凝表面的温度因此升高，这对冷凝速度产生了负面影响。已经研究了许多冷却冷凝表面的技术，例如水冷却、空气冷却、添加相变材料（PCM）或带有吸力风扇的外部冷凝器。分析以前的调查使用外部冷凝器或PCM冷却玻璃盖，以确定哪一个更有效是本研究的主要目的。同时，本文也强调了未来的研究方向，以促进该领域的更大创新。文献综述的结果表明，使用风扇冷却玻璃并在给水箱中冷凝蒸汽比使用纳米PCM冷却玻璃效果更好。此外，增加外部冷凝器或PCM的热效率范围分别为42% - 72.4%和50.7% - 65%。当增加PCM或外部冷凝器时，太阳能蒸馏器产量的增加幅度分别为26% ~ 44%和25% ~ 68%。外部冷凝器或PCM系统每公升淡水的最低费用分别为0.01元及0.011元。因此，与PCM系统相比，具有外部冷凝器的太阳能蒸馏系统具有更高的输出，更好的效率，每升淡水的成本更低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.