Assessment of a solar-powered trigeneration plant integrated with thermal energy storage using phase change materials

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL Process Safety and Environmental Protection Pub Date : 2024-09-06 DOI:10.1016/j.psep.2024.09.012

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Abstract

This study presents a comprehensive thermodynamic assessment of a trigeneration plant producing electricity, fresh water through multi-effect desalination (MED), and cooling through an absorption refrigeration cycle. The MED and absorption refrigeration systems utilize the rejected heat from the power cycle, driven by concentrated solar power (CSP). Situated in Qatar, the present system leverages the abundant solar irradiance to optimize the efficiency of electricity generation, water desalination, and cooling. The design features parabolic trough collectors with synthetic oil as the heat transfer fluid, direct thermal storage, and a Rankine steam turbine cycle with three turbine stages. The system also incorporates phase change materials (PCMs) based thermal energy storage (TES) to improve the system performance and offset the mismatch between demand and supply. The present system evaluation is based on energy and exergy analyses, while the Aspen Plus is used to simulate the power production and desalination operations, providing detailed insights into its efficiency and potential for large-scale implementation. The proposed system operates with an energy efficiency of 56.72 % and an exergy efficiency of 31.24 %, respectively.

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利用相变材料评估与热能储存相结合的太阳能发电厂

本研究对一个三联供发电厂进行了全面的热力学评估，该发电厂通过多效海水淡化（MED）生产电力、淡水，并通过吸收式制冷循环进行冷却。多效海水淡化和吸收式制冷系统利用由聚光太阳能（CSP）驱动的发电循环产生的废热。本系统位于卡塔尔，利用丰富的太阳辐照，优化发电、海水淡化和冷却的效率。该系统的设计特点是抛物槽式集热器，以合成油为导热液体，直接蓄热，以及三级涡轮的朗肯蒸汽涡轮循环。该系统还采用了基于相变材料（PCMs）的热能储存（TES）技术，以提高系统性能并抵消供需不匹配的问题。本系统评估基于能量和放能分析，同时使用 Aspen Plus 对发电和海水淡化操作进行模拟，以详细了解其效率和大规模实施的潜力。拟议系统的能效为 56.72%，放能效率为 31.24%。

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来源期刊

Process Safety and Environmental Protection 环境科学-工程：化工

CiteScore

11.40

自引率

15.40%

发文量

929

审稿时长

8.0 months

期刊介绍： The Process Safety and Environmental Protection (PSEP) journal is a leading international publication that focuses on the publication of high-quality, original research papers in the field of engineering, specifically those related to the safety of industrial processes and environmental protection. The journal encourages submissions that present new developments in safety and environmental aspects, particularly those that show how research findings can be applied in process engineering design and practice. PSEP is particularly interested in research that brings fresh perspectives to established engineering principles, identifies unsolved problems, or suggests directions for future research. The journal also values contributions that push the boundaries of traditional engineering and welcomes multidisciplinary papers. PSEP's articles are abstracted and indexed by a range of databases and services, which helps to ensure that the journal's research is accessible and recognized in the academic and professional communities. These databases include ANTE, Chemical Abstracts, Chemical Hazards in Industry, Current Contents, Elsevier Engineering Information database, Pascal Francis, Web of Science, Scopus, Engineering Information Database EnCompass LIT (Elsevier), and INSPEC. This wide coverage facilitates the dissemination of the journal's content to a global audience interested in process safety and environmental engineering.