Language
English
Publication Date
4-19-2026
Journal
Scientific Reports
DOI
10.1038/s41598-026-49447-6
PMID
42002618
PMCID
PMC13254329
PubMedCentral® Posted Date
4-19-2026
PubMedCentral® Full Text Version
Post-print
Abstract
Current research on the Poly(N-isopropylacrylamide) (PNIPAM)-coated 30–40 nm silica particles (SiO₂) is integrated with deionized (DI) water via the ultrasonication method to overcome the variations in thermal conductivity, poor stability, and limited heat transfer with conventional DI water. During the investigation, the PNIPAM-coated SiO₂ concentration was varied at 0.2 vol%, 0.4 vol%, 0.6 vol%, and 0.8 vol% under forced convection. The thermal performance of heat transfer fluid (HTF) and the reduction of specific heat capacity were studied, and the results are compared with the base (DI water). The results showed that the DI water embedded with 0.6 vol% of PNIPAM-coated SiO₂ exhibited superior thermal performance, like enhanced thermal conductivity (0.706 W/mK at 80 °C), decreased specific heat (4107 J/kg · K), increased viscosity of 1.04 mPa·s, improved heat transfer coefficient of 500.4 W/m2.K, and enhanced stability (98%). Overall, the 0.6 vol% PNIPAM–SiO₂ nanofluid exhibited an optimal balance of high thermal conductivity, heat transfer performance, and stable dispersion, suggesting strong potential for advanced thermal management in heat exchangers and solar thermal systems.
Keywords
Heat transfer fluid, Deionized water, PNIPAM, Reduction of specific heat, Silica, Thermal performance, Energy science and technology, Engineering, Materials science, Nanoscience and technology
Published Open-Access
yes
Recommended Citation
Deepati, Anil Kumar; Haldar, Barun; Murali, M; et al., "Enhancement of Heat Transfer and Functional Behaviour of Poly(N-Isopropylacrylamide) Coated Silica Nanoparticle Materialism Featuring Heat Transfer Fluid" (2026). Faculty, Staff and Students Publications. 8205.
https://digitalcommons.library.tmc.edu/baylor_docs/8205