Exploiting the Potential of Carbon Nanotubes and Nanofluids to Boost Efficiency in Solar Applications

This work comprehensively reviews recent advancements and applications of Carbon Nanotube (CNT) nanofluids, specifically concentrating on their integration into energy harvesting systems, particularly solar collectors. The effectiveness of collectors. Utilizing CNT nanofluids is assessed, accompanied by exploring preparation methods and factors influencing thermal conductivity and optical properties. Also mentioned are the drawbacks and potential directions for using CNT nanofluids in thermal collectors. CNTs, possessing the highest thermal conductivity among known nanoparticles, offer promising potential as heat transfer fluids when dispersed into various base fluids, creating CNT nanofluids. However, maintaining prepared CNT nanofluids’ homogeneity and sustained durability poses a significant challenge. The paper provides a detailed study of the preparation techniques and reported stability periods of stationary CNT nanofluids. Various treatment methods, including chemical and physical treatments, are systematically analyzed, offering insights into overcoming stability challenges and future directions. The paper advocates for a balanced combination of techniques to achieve CNT dispersion without excessive treatment. Methods for analyzing nanofluid stability are also surveyed, emphasizing the need for cost-effective and rapid stability prediction methods.