A review of applications of green nanofluids for performance improvement of solar collectors

Debojit Dewanjee and Balaram Kundu

Renewable Energy, 2025, vol. 240, issue C

Abstract: The increasing global demand for energy contributes to a persistent rise in global temperatures above pre-industrial levels, accompanied by the release of pollutants and toxic gases into the environment. Solar collectors, among renewable energy sources, play a pivotal role in addressing these challenges. They must exhibit high thermodynamic efficiency while remaining environmentally friendly. Due to their exceptional properties, there is a growing interest in utilizing nanofluids in solar collectors. However, they have unintended consequences, such as generating non-biodegradable byproducts from strong chemicals during preparation. Consequently, developing cost-effective and eco-friendly green nanofluids has emerged as a rapidly expanding research area. This study provides a comprehensive review of the existing literature on the synthesis techniques of green nanofluids and their various thermophysical properties, which are paramount in solar collector applications. Furthermore, this work highlights the scope and challenges of using green nanofluids in solar collector applications.

Keywords: Nanofluid; Green nanofluid; Thermal system; Solar collector; Green technology; Bio-based nanomaterials (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:240:y:2025:i:c:s096014812402250x

DOI: 10.1016/j.renene.2024.122182

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