A unique solar pond system integrated with chlor-alkali electrolyser for heat storage and hydrogen production

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress Pub Date : 2024-10-01 DOI:10.1016/j.tsep.2024.102922

Dogan Erdemir , Ibrahim Dincer

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引用次数: 0

Abstract

Solar ponds are recognized as a simple, but a unique solution for renewable heat storage to use later. A freshwater feed to solar ponds is considered a crucial requirement to maintain the salinity gradient accordingly for heat storage purposes. This study aims to benefit from this specific requirement for solar ponds by integrating chlor-alkali electrolysers to produce hydrogen along with heat storage, which is a common purpose of a solar pond. Therefore, the proposed system establishes a desirable synergy, as per the sustainable development goals, between a conventional solar pond and an innovative high-tech hydrogen production system. In order to produce hydrogen, the saline water withdrawn from the upper convective zone is used in a chlor-alkali electrolyser powered by solar PV in order to produce green hydrogen. Thus, a conventional solar pond is converted into an integrated energy system that produces hydrogen and chlorine for useful purposes, along with heat storage capability. The system’s performance has been assessed in terms of the energy and exergy efficiencies for five distinct cities located in different countries that are grappling with poverty. The system’s performance, which is assessed in five cities, demonstrates the energy and exergy efficiencies ranging from 11.66 % to 14.56 % and 6.84 % to 8.60 % for the solar pond. They vary from 21.95 % to 24.22 % and from 14.23 % to 14.66 % for the overall system, respectively. Furthermore, the system effectively captures and stores solar energy, and it reaches temperatures up to 89.1°C. Moreover, the proposed system is expected to contribute to the United Nations’ Sustainable Development Goals by addressing energy poverty, promoting clean energy, and fostering economic growth.

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独特的太阳能池系统与氯碱电解槽相结合，用于储热和制氢

太阳能池塘被认为是一种简单但独特的可再生热量储存解决方案，可供日后使用。向太阳能池塘注入淡水被认为是维持相应盐度梯度以达到储热目的的关键要求。本研究旨在通过整合氯碱电解槽，在生产氢气的同时储存热量，从而从太阳池的这一特殊要求中获益，这也是太阳池的共同目的。因此，根据可持续发展目标，拟议的系统在传统的太阳能池塘和创新的高科技制氢系统之间建立了理想的协同作用。为了生产氢气，从上对流区抽取的盐水被用于由太阳能光伏发电驱动的氯碱电解槽，以生产绿色氢气。这样，一个传统的太阳能池就变成了一个综合能源系统，既能生产氢气和氯气，又能储存热量。该系统的性能已根据位于不同国家的五个不同城市的能源效率和放能效率进行了评估。在对五个城市的系统性能进行评估后发现，太阳能池塘的能效和放能效分别为 11.66 % 至 14.56 % 和 6.84 % 至 8.60 %。整个系统的能效和放能效分别为 21.95 % 至 24.22 % 和 14.23 % 至 14.66 %。此外，该系统还能有效捕获和储存太阳能，其温度最高可达 89.1°C。此外，拟议的系统有望通过解决能源贫困、推广清洁能源和促进经济增长，为实现联合国可持续发展目标做出贡献。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thermal Science and Engineering Progress Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

7.20

自引率

10.40%

发文量

327

审稿时长

41 days

期刊介绍： Thermal Science and Engineering Progress (TSEP) publishes original, high-quality research articles that span activities ranging from fundamental scientific research and discussion of the more controversial thermodynamic theories, to developments in thermal engineering that are in many instances examples of the way scientists and engineers are addressing the challenges facing a growing population – smart cities and global warming – maximising thermodynamic efficiencies and minimising all heat losses. It is intended that these will be of current relevance and interest to industry, academia and other practitioners. It is evident that many specialised journals in thermal and, to some extent, in fluid disciplines tend to focus on topics that can be classified as fundamental in nature, or are ‘applied’ and near-market. Thermal Science and Engineering Progress will bridge the gap between these two areas, allowing authors to make an easy choice, should they or a journal editor feel that their papers are ‘out of scope’ when considering other journals. The range of topics covered by Thermal Science and Engineering Progress addresses the rapid rate of development being made in thermal transfer processes as they affect traditional fields, and important growth in the topical research areas of aerospace, thermal biological and medical systems, electronics and nano-technologies, renewable energy systems, food production (including agriculture), and the need to minimise man-made thermal impacts on climate change. Review articles on appropriate topics for TSEP are encouraged, although until TSEP is fully established, these will be limited in number. Before submitting such articles, please contact one of the Editors, or a member of the Editorial Advisory Board with an outline of your proposal and your expertise in the area of your review.