Statistical modeling of heat transfer enhancements through controlled temperature and surface modifications: A fundamental understanding of nanofluid behavior
This work investigated the impact of surface modifications on silver nanoparticles (AgNPs) dispersed in deionized water to enhance heat transfer performance. Three distinct nanofluids were prepared with AgNPs coated with citrate (Ag/C), lipoic acid (Ag/L), and silica (Ag/S) shells. A custom-built he...
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Elsevier
2025-03-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123024020334 |
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| author | Ratchagaraja Dhairiyasamy Saurav Dixit Subhav Singh Deepika Gabiriel |
| author_facet | Ratchagaraja Dhairiyasamy Saurav Dixit Subhav Singh Deepika Gabiriel |
| author_sort | Ratchagaraja Dhairiyasamy |
| collection | DOAJ |
| description | This work investigated the impact of surface modifications on silver nanoparticles (AgNPs) dispersed in deionized water to enhance heat transfer performance. Three distinct nanofluids were prepared with AgNPs coated with citrate (Ag/C), lipoic acid (Ag/L), and silica (Ag/S) shells. A custom-built heat pipe experimental setup measured the nanofluids' thermal conductivity and heat transfer coefficients over a temperature range of 30–90 °C. The thermophysical properties, including density, specific heat, thermal conductivity, and viscosity, were systematically characterized across the temperature range. The convective heat transfer coefficients, thermal resistance, and overall heat transfer rates were evaluated and compared against deionized water as a baseline. The results demonstrated significant differences based on the surface modification type. Ag/L exhibited the highest thermal conductivity enhancement, while Ag/S demonstrated the most substantial thermal resistance reduction and increased heat transfer coefficients. Compared to deionized water, Ag/S showed a 7.41 % increase in heat transfer rate at 90 °C. The findings underscore the pivotal role of surface chemistry in dictating heat transfer characteristics and the potential of surface-modified AgNP nanofluids for efficient thermal management in applications such as electronics cooling, heat exchangers, and energy systems. Further research could explore long-term stability, synergistic effects of hybrid nanoparticles, computational modeling, scalability, and environmental implications to fully harness the remarkable potential of these advanced nanofluids. |
| format | Article |
| id | doaj-art-35b7ca63345c46419f55b81ac0ec1ea9 |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-35b7ca63345c46419f55b81ac0ec1ea92024-12-28T05:22:39ZengElsevierResults in Engineering2590-12302025-03-0125103790Statistical modeling of heat transfer enhancements through controlled temperature and surface modifications: A fundamental understanding of nanofluid behaviorRatchagaraja Dhairiyasamy0Saurav Dixit1Subhav Singh2Deepika Gabiriel3Department of Electronics and Communication Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamilnadu, IndiaCentre of Research Impact and Outcome, Chitkara University, Rajpura, 140417, Punjab, IndiaChitkara Centre for Research and Development, Chitkara University, Himachal Pradesh, 174103, IndiaCollege of Engineering and Technology, Aksum University, Ethiopia; Corresponding author.This work investigated the impact of surface modifications on silver nanoparticles (AgNPs) dispersed in deionized water to enhance heat transfer performance. Three distinct nanofluids were prepared with AgNPs coated with citrate (Ag/C), lipoic acid (Ag/L), and silica (Ag/S) shells. A custom-built heat pipe experimental setup measured the nanofluids' thermal conductivity and heat transfer coefficients over a temperature range of 30–90 °C. The thermophysical properties, including density, specific heat, thermal conductivity, and viscosity, were systematically characterized across the temperature range. The convective heat transfer coefficients, thermal resistance, and overall heat transfer rates were evaluated and compared against deionized water as a baseline. The results demonstrated significant differences based on the surface modification type. Ag/L exhibited the highest thermal conductivity enhancement, while Ag/S demonstrated the most substantial thermal resistance reduction and increased heat transfer coefficients. Compared to deionized water, Ag/S showed a 7.41 % increase in heat transfer rate at 90 °C. The findings underscore the pivotal role of surface chemistry in dictating heat transfer characteristics and the potential of surface-modified AgNP nanofluids for efficient thermal management in applications such as electronics cooling, heat exchangers, and energy systems. Further research could explore long-term stability, synergistic effects of hybrid nanoparticles, computational modeling, scalability, and environmental implications to fully harness the remarkable potential of these advanced nanofluids.http://www.sciencedirect.com/science/article/pii/S2590123024020334Energy efficiency thermal managementHeat transfer enhancementSilver nanoparticlesThermal conductivity |
| spellingShingle | Ratchagaraja Dhairiyasamy Saurav Dixit Subhav Singh Deepika Gabiriel Statistical modeling of heat transfer enhancements through controlled temperature and surface modifications: A fundamental understanding of nanofluid behavior Results in Engineering Energy efficiency thermal management Heat transfer enhancement Silver nanoparticles Thermal conductivity |
| title | Statistical modeling of heat transfer enhancements through controlled temperature and surface modifications: A fundamental understanding of nanofluid behavior |
| title_full | Statistical modeling of heat transfer enhancements through controlled temperature and surface modifications: A fundamental understanding of nanofluid behavior |
| title_fullStr | Statistical modeling of heat transfer enhancements through controlled temperature and surface modifications: A fundamental understanding of nanofluid behavior |
| title_full_unstemmed | Statistical modeling of heat transfer enhancements through controlled temperature and surface modifications: A fundamental understanding of nanofluid behavior |
| title_short | Statistical modeling of heat transfer enhancements through controlled temperature and surface modifications: A fundamental understanding of nanofluid behavior |
| title_sort | statistical modeling of heat transfer enhancements through controlled temperature and surface modifications a fundamental understanding of nanofluid behavior |
| topic | Energy efficiency thermal management Heat transfer enhancement Silver nanoparticles Thermal conductivity |
| url | http://www.sciencedirect.com/science/article/pii/S2590123024020334 |
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