Impact of surfactant groups on the stability, thermophysical and phase change characteristics of water-based single and hybrid nanofluid PCMs for cool energy storage applications

IF 5.4 3区工程技术 Q2 ENERGY & FUELS Thermal Science and Engineering Progress Pub Date : 2025-03-01 Epub Date: 2025-01-23 DOI:10.1016/j.tsep.2025.103298

Nanda kumar Srinivasan, Chandrasekaran Ponnusamy

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Abstract

The current work investigates the stability and thermophysical characteristics of various groups of surfactants used in single and hybrid Nanofluid Phase Change Materials (NFPCMs) for cool thermal energy storage (CTES) applications. The single and hybrid NFPCMs were prepared using the oxygen-functionalized GNP and CuO nanomaterials along with three surfactants of CTAB (cationic) SDBS (anionic), and GA (non-ionic) separately, at a 0.1 wt% of nanomaterials in the DI water as a base PCM. Among the different surfactant types of hybrids and single NFPCMs, the SDBS surfactant type of hybrid NFPCM 1 has shown maximum stability, with a smaller average particle size of 227.7 nm and a zeta potential value of −47.3 mV. Furthermore, compared to the basic PCM, the SDBS hybrid NFPCM 1 thermal conductivity exhibits a maximum enhancement of 18.96 % in the liquid state and 31.46 % in the solid state. The latent heat value is maximum dropped by 13.42 % and 10.1 % for GA surfactant type hybrid NFPCM 3 at a heating rate of 5 Kmin⁻¹ during heating and cooling, respectively. Moreover, the thermal stability analysis of TGA shows that both single and hybrid NFPCMs have a suitable peak thermal degradation temperature that is recommended for use in cool energy storage applications. The hybrid NFPCM storage unit integrated with the chiller has the highest stability and thermal properties, capable of achieving environmental pollution redress and energy saving by minimizing the duration of the PCM’s charge.

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表面活性剂基团对用于冷储能的水基单一和混合纳米流体pcm的稳定性、热物理和相变特性的影响

目前的工作是研究用于冷热能储存（CTES）应用的单一和混合纳米流体相变材料（NFPCMs）中各种表面活性剂的稳定性和热物理特性。以含氧官能化GNP和CuO纳米材料为基料，分别加入CTAB（阳离子）、SDBS（阴离子）和GA（非离子）三种表面活性剂，以0.1 wt%的纳米材料为基料，制备了单一和杂化的nfpcm。在杂化和单一NFPCM的不同表面活性剂类型中，SDBS表面活性剂类型的杂化NFPCM 1表现出最大的稳定性，其平均粒径较小，为227.7 nm， zeta电位值为- 47.3 mV。此外，与碱性PCM相比，SDBS混合NFPCM 1的导热系数在液态和固态下分别提高了18.96%和31.46%。当升温速率为5 Kmin−1时，GA表面活性剂型杂化nfpcm3在加热和冷却过程中潜热值分别下降13.42%和10.1%。此外，热稳定性分析表明，无论是单一的还是混合的nfpcm都有合适的峰值热降解温度，推荐用于冷储能应用。与冷水机集成的混合NFPCM存储单元具有最高的稳定性和热性能，能够通过最大限度地减少PCM的充电时间来实现环境污染补救和节能。

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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.