{"title":"Multi-Effect Evaporation Desalination Powered by Vapor Absorption Refrigeration Using Solar Energy","authors":"Prof. Emad Ali","doi":"10.1002/ceat.70103","DOIUrl":null,"url":null,"abstract":"<p>Integration of solar-assisted vapor absorption refrigeration (SVAR) with multi-effect evaporator (MEE) is investigated for supply and optimal energy distribution. A solar collector area of 9000 m<sup>2</sup> was necessary to make the SVAR provide MEE with sensible heat to operate at prescribed operating conditions. For better management of the available energies, three MEE variants were proposed. All variants can achieve perfect energy utilization with zero residue only if the MEE feed rate is prudently adjusted. The highest attainable recovery ratio and performance ratio are 38 % and 2.0, respectively. Two MEE variants suffer from chilling energy shortage when the last effect temperature (<i>T</i><sub>bn</sub>) is less than 41 °C, whereas another variant undergoes the same issue when <i>T</i><sub>bn</sub> exceeds 41 °C. SVAR can provide sufficient feed preheating and condenser cooling over a range of temperature drop per effect between 1 and 5 and a range of feed rate of 10–50 kg s<sup>−1</sup> except at sporadic extreme conditions.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"48 9","pages":""},"PeriodicalIF":1.6000,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering & Technology","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/ceat.70103","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Integration of solar-assisted vapor absorption refrigeration (SVAR) with multi-effect evaporator (MEE) is investigated for supply and optimal energy distribution. A solar collector area of 9000 m2 was necessary to make the SVAR provide MEE with sensible heat to operate at prescribed operating conditions. For better management of the available energies, three MEE variants were proposed. All variants can achieve perfect energy utilization with zero residue only if the MEE feed rate is prudently adjusted. The highest attainable recovery ratio and performance ratio are 38 % and 2.0, respectively. Two MEE variants suffer from chilling energy shortage when the last effect temperature (Tbn) is less than 41 °C, whereas another variant undergoes the same issue when Tbn exceeds 41 °C. SVAR can provide sufficient feed preheating and condenser cooling over a range of temperature drop per effect between 1 and 5 and a range of feed rate of 10–50 kg s−1 except at sporadic extreme conditions.
研究了太阳能辅助蒸汽吸收式制冷系统（SVAR）与多效蒸发器（MEE）的集成供电和优化能量分配问题。为了使SVAR在规定的运行条件下向MEE提供显热，需要9000平方米的太阳能集热器。为了更好地管理可用能量，提出了三种MEE变体。只要合理调整进料速度，所有的变型都能达到完美的能量利用和零残留。可获得的最高回收率和性能比分别为38%和2.0。两种MEE变体在最后效应温度（Tbn）低于41℃时存在制冷能量不足的问题，而另一种变体在Tbn超过41℃时也存在同样的问题。SVAR可以提供足够的进料预热和冷凝器冷却，每效应的温度降范围在1到5之间，进料速率范围为10-50 kg s - 1，除非在零星的极端条件下。
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