Innovative solar still design using cooling pyramid tower, ultrasonic fogger, wave-maker, PCM, and steel mirrors

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2025-07-15 DOI:10.1016/j.seppur.2025.134352

Sina Mohammadi, Roonak Daghigh

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引用次数: 0

Abstract

A portable modified pyramid solar still (PMPSS) has been developed to provide high-yield, low-cost freshwater in mountainous, arid, and off-grid regions. The unit integrates seven enhancements: concave stainless-steel mirrors for solar concentration, phase-change material for latent heat storage, a wave-maker for bulk mixing, an ultrasonic fogger for fine spray generation, a dual-pyramid cap-cooling system for effective condensation at the apex, thermoelectric modules for targeted basin heating and auxiliary cooling, and a droplet-feed layer for uniform shallow brine distribution. Field trials were conducted in Sanandaj, Iran (35.3°N; September 2022), and compared against a conventional pyramid solar still (CPSS). The PMPSS achieved a yield of 4.64 L m⁻²·day⁻¹—an 88 % increase over the CPSS—along with energy and exergy efficiencies of 34.1 % and 2.4 %, respectively. Moreover, the levelised cost of water was reduced to $0.089/L. These integrated enhancements make the PMPSS a cost-effective and scalable solution for providing reliable freshwater in remote mountainous and arid areas.

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创新的太阳能蒸馏器设计，采用冷却金字塔塔，超声波雾器，造波器，PCM和钢镜

开发了一种便携式改进金字塔太阳能蒸馏器（PMPSS），用于山区、干旱地区和离网地区提供高产、低成本的淡水。该装置集成了七项改进：用于太阳能集中的凹面不锈钢镜，用于潜热储存的相变材料，用于大量混合的造波器，用于产生细喷雾的超声波雾器，用于在顶部有效冷凝的双金字塔帽冷却系统，用于目标盆加热和辅助冷却的热电模块，以及用于均匀浅层盐水分布的液滴馈送层。现场试验在伊朗Sanandaj(35.3°N；2022年9月)，并与传统的金字塔太阳能蒸馏器（CPSS）进行了比较。PMPSS的产率为4.64 L m−2·day−1，比cpss提高了88 %，能量效率和火用效率分别为34.1% %和2.4 %。此外，水的平准化成本降至0.089美元/升。这些综合增强功能使PMPSS成为一种具有成本效益和可扩展的解决方案，可为偏远山区和干旱地区提供可靠的淡水。

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来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.