4E analysis of productivity and efficiency enhancements in pyramid solar distillation: Innovations in tray design, water heating, and forced condensation integration

IF 6.4 2区工程技术 Q1 THERMODYNAMICS Case Studies in Thermal Engineering Pub Date : 2024-11-09 DOI:10.1016/j.csite.2024.105464

Sattam Alharbi , Ali Alshamrani

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Abstract

This research enhances the thermal efficiency of a pyramid solar distiller (PSD) through 4 E (energy, exergy, economic, and environmental) analysis. The modified distiller (MPSD) features suspended trays on three vertical walls, tested with and without heaters, and various water levels (6.2–49.6 L) in the basin. The study also examined MPSD's performance with an external condenser, aided by a fan operating at different speeds (0.25–1.5 rpm). Results showed that the MPSD, with a water depth of 1 cm and 12.4 L in the basin, achieved a 33 % yield improvement and 50.2 % efficiency. Total productivity of MPSD reached 3755 mL/m² compared to 2820 mL/m² for the PSD. MPSD with heaters produced 6430 mL/m², reflecting a 98.5 % increase. The best performance occurred at 1.25 rpm, with a 133 % productivity increase, 66.5 % thermal efficiency, and 4.58 % exergy efficiency. The water cost was $0.23/L for the MPSD, lower than the PSD's $0.34/L. CO₂ emissions were 30.93–32.23 tons per year for different configurations, and enviroeconomic indicators were 447.46–467.33 annually, depending on the setup.

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对金字塔太阳能蒸馏的生产率和效率提升进行 4E 分析：托盘设计、水加热和强制冷凝集成方面的创新

这项研究通过 4 E（能量、放能、经济和环境）分析提高了金字塔太阳能蒸馏器（PSD）的热效率。改进后的蒸馏器（MPSD）在三面垂直墙壁上安装了悬挂式托盘，测试了加热器和不加热器，以及水池中的不同水位（6.2-49.6 升）。该研究还考察了 MPSD 在外部冷凝器的作用下的性能，外部冷凝器由不同转速（0.25-1.5 rpm）的风扇辅助。结果表明，水深为 1 厘米、水池容积为 12.4 升的 MPSD 产量提高了 33%，效率提高了 50.2%。MPSD 的总产量达到 3755 mL/m2，而 PSD 为 2820 mL/m2。带加热器的 MPSD 产量为 6430 mL/m2，提高了 98.5%。最佳性能出现在 1.25 rpm 时，生产率提高了 133%，热效率提高了 66.5%，放能效率提高了 4.58%。MPSD 的水成本为 0.23 美元/升，低于 PSD 的 0.34 美元/升。不同配置的 CO₂ 排放量为每年 30.93-32.23 吨，环境经济指标为每年 447.46-467.33 （取决于设置）。

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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.