Photo-thermal conversion ability of PEG and H2O-based microfluids of sodium lignosulfonate and its carbonized form†

IF 3.2 Q2 CHEMISTRY, PHYSICAL

Energy advances Pub Date : 2024-06-10 DOI:10.1039/D4YA00153B

Fatemeh Seifikar, Saeid Azizian and Babak Jaleh

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Abstract

In the present work, colloidal systems of sodium lignosulfonate (lignin) and its carbonized form (C-lignin) in H₂O and polyethylene glycol (PEG) were synthesized and used for solar-thermal conversion. PEG and H₂O play the role of a dispersant of the suspended particles as the base fluids and an environment for transferring heat. Based on the results, PEG performs better as the base fluid than water. All the synthesized microfluids (MFs) were stable at an optimum concentration of 0.2 g/60 ml. The comparative studies show that the C-lignin/PEG has the best light-to-heat conversion efficiency. The C-lignin/PEG was used at high light intensities and for several heating/cooling cycles without losing its performance in heat generation. All the calculated thermo-physical parameters indicated that C-lignin/PEG is more eligible than lignin/PEG in photo-thermal conversion. The prepared C-lignin/PEG has several advantages: green, inexpensive and simplicity of the preparation procedure, not using a dispersant, high photo-thermal durability and heat-generation efficiency, and excellent ability to generate heat from sunlight.

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基于 PEG 和 H2O 的木质素磺酸钠及其碳化形式微流体的光热转化能力

本研究合成了木质素磺酸钠（木质素）及其碳化形式（C-木质素）在 H2O 和聚乙二醇（PEG）中的胶体系统，并将其用于太阳能-热转换。PEG 和 H2O 既是悬浮颗粒的分散剂，又是热量传递的基础流体和环境。结果表明，PEG 作为基液的性能优于水。所有合成的微流体（MFs）在 0.2 克/60 毫升的最佳浓度下都很稳定。比较研究表明，C-木质素/PEG 的光热转换效率最高。在高光照强度下使用 C-木质素/PEG，并进行多次加热/冷却循环后，其发热性能也没有降低。所有计算得出的热物理参数都表明，C-木质素/PEG 比木质素/PEG 更符合光热转换的要求。所制备的 C-木质素/PEG 具有以下几个优点：绿色环保、成本低廉、制备过程简单、不使用分散剂、光热耐久性和发热效率高、利用太阳光产生热量的能力强。

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

Energy advances

CiteScore

1.80

自引率

0.00%

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