The Thermodynamic-Analysis-Derived Structure Optimization on the Solar Thermal Localized Desalination and Water-Treatments

IF 6.5 3区材料科学 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Advanced Sustainable Systems Pub Date : 2024-07-31 DOI:10.1002/adsu.202400121

Yongchao Huang, Heyu Li, Yan Cao

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Abstract

The solar thermal localization (STL) technology is promising and cost-effective for desalination or wastewater treatments, but currently in an insufficient status on its structure optimization. This study emphasized the water-cooled STL (WSTL) system and its step-forward modifications, involving the air-insulated WSTL (AWSTL) system and the vacuum WSTL (VWSTL) system, together with their thermodynamic modeling analysis on energy-water conversions, heat-mass transfers, and energy losses. Results indicated the best-performing VWSTL mode can achieve a freshwater yield as high as 1.503 kg·m⁻²·h⁻¹ at energy efficiency of 68.0% (the light intensity at 1500 W·m⁻² indoor), and that of 4.31 kg·m⁻²·day⁻¹ at energy efficiency of 47.5% (the 8-h averaged solar light intensity at 769.7 W·m⁻² outdoor per-day) whose energy efficiency is exceeded all competitors in open literature. There likely is an improvement space in applying better evaporation materials.

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基于热力学分析的太阳能热局部脱盐和水处理结构优化

太阳能热本地化（STL）技术在海水淡化或废水处理方面前景广阔、成本效益高，但目前在结构优化方面还存在不足。本研究强调了水冷式 STL（WSTL）系统及其逐步改进，包括空气隔热 WSTL（AWSTL）系统和真空 WSTL（VWSTL）系统，并对其能量-水转换、热质传递和能量损失进行了热力学建模分析。结果表明，性能最好的 VWSTL 模式的淡水产量高达 1.503 kg-m-2-h-1，能效为 68.0%（室内光照强度为 1500 W-m-2），能效为 47.5%（室外每天 8 小时平均太阳光照强度为 769.7 W-m-2），达到 4.31 kg-m-2-day-1，其能效超过了所有公开文献中的竞争对手。采用更好的蒸发材料可能还有改进的空间。

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来源期刊

Advanced Sustainable Systems Environmental Science-General Environmental Science

CiteScore

10.80

自引率

4.20%

发文量

186

期刊介绍： Advanced Sustainable Systems, a part of the esteemed Advanced portfolio, serves as an interdisciplinary sustainability science journal. It focuses on impactful research in the advancement of sustainable, efficient, and less wasteful systems and technologies. Aligned with the UN's Sustainable Development Goals, the journal bridges knowledge gaps between fundamental research, implementation, and policy-making. Covering diverse topics such as climate change, food sustainability, environmental science, renewable energy, water, urban development, and socio-economic challenges, it contributes to the understanding and promotion of sustainable systems.