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Author: search.filters.author.Bhattacharyya, SuvanjanSubject: search.filters.subject.Phase change materials (PCMs)

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    Thermal and desalination performance enhancement of single slope solar still using phase change material
    (Springer Nature, 2025-04) Bhattacharyya, Suvanjan
    The study that is being presented focused on the numerical analysis of the melting regime for various phase change materials (PCMs) in order to select an optimal material that would enhance the desalination efficiency of single-slope solar stills. While choosing the PCMs, the following factors were considered, availability, economic viability, environmental friendliness, and thermophysical properties. The study utilised ANSYS Fluent 18.1 to conduct a comparative analysis based on the melting of five different PCMs at different time stamps. The models and results showed that at 5000 s, Fe3O4 nanoparticle-enhanced PCM is the most effective of all the PCMs that were studied. This is because it melted completely before the other PCMs, which included RT35, Lauric Acid, CaCl2·6H2O, and n-octadecane. The best inorganic PCM was discovered to be CaCl2·6H2O, which had a maximum liquid fraction of around 68%. The best organic PCM was determined to be n-octadecane, which had a liquid fraction of nearly 57%. Lauric acid and RT35 achieved maximum liquid fractions of approximately 49% and 41%, respectively.
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    A comprehensive review on lithium-ion battery thermal management (BTM) using phase change materials: advances, challenges, and future perspectives
    (Springer, 2025-05) Bhattacharyya, Suvanjan
    The necessity of robust battery thermal management (BTM) systems is paramount for ensuring the safety, performance, and longevity of lithium-ion batteries (LIBs), especially in high-demand sectors like electric vehicles (EVs). Effective thermal regulation is crucial to prevent thermal runaway, a potentially catastrophic event that can lead to fires. As the global transition toward renewable energy and electric mobility accelerates, the demand for sophisticated BTM systems capable of maintaining optimal battery temperatures across various operational conditions has become increasingly clear. This review focuses on the role of phase change materials (PCMs) in BTM systems, highlighting their ability to absorb excess heat through phase transitions and maintain battery stability. PCMs are particularly effective in passive and hybrid BTM systems, where energy efficiency is critical. However, the low thermal conductivity of PCMs presents a challenge, often leading to uneven cooling. Research into enhancing PCM performance through the integration of materials like metal foams, expanded graphite, and nanoparticles, as well as optimizing system designs, is ongoing. Significant advancements in hybrid BTM systems that combine PCM with air or liquid cooling have demonstrated superior thermal regulation. These hybrid systems, especially those incorporating heat pipes, effectively manage battery temperatures and improve temperature uniformity, even in high-power applications. The present review explores and discuses all these aspects of BTM. Despite challenges such as increased system mass and cost, PCM-based BTM systems offer long-term benefits, including extended battery life and reduced operational expenses. Future research is expected to focus on developing advanced materials, such as nano-enhanced PCMs, and integrating artificial intelligence (AI) for real-time optimization of BTM systems. These innovations are likely to enhance efficiency and safety further, making PCM-based BTMs a key component in the future of battery technology, particularly in renewable energy and EV sectors.