TY - JOUR
T1 - Analysis of shape dependency of thermal conductivity of silver-based nanofluids
AU - Nyamgoudar, Smita Mahadevappa
AU - Silaparasetti, Vasavi Prasuna
AU - Shilpa, M. P.
AU - Pavithra, K. S.
AU - Mundinamani, Shridhar
AU - Eshwarappa, K. M.
AU - Surabhi, Srivathsava
AU - Ramam, Koduri
AU - Ravikirana,
AU - Ganesha, A.
AU - Gurumurthy, S. C.
N1 - Funding Information:
Smita Mahadevappa Nyamgoudar, Vasavi Prasuna Silaparasetti Shilpa M P, Gurumurthy S C, and Ganesha A acknowledge Manipal Academy of Higher Education for the funding facility. Authors are grateful to Mangalore University DST-PURSE laboratory for providing the FESEM facility. The authors Koduri Ramam and Srivathsava Surabhi are greatly indebted to Universidad de Concepción (UdeC), Chile, for its huge support and facilities. We also acknowledge the corresponding Fondecyt Regular (No 1140420) and postdoctoral (No 3200832) Projects Programa Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT) de la Agencia Nacional de Investigación y Desarrollo, Chile. The authors acknowledge Vishwanath H S for designing graphical abstract.
Funding Information:
Smita Mahadevappa Nyamgoudar, Vasavi Prasuna Silaparasetti Shilpa M P, Gurumurthy S C, and Ganesha A acknowledge Manipal Academy of Higher Education for the funding facility. Authors are grateful to Mangalore University DST-PURSE laboratory for providing the FESEM facility. The authors Koduri Ramam and Srivathsava Surabhi are greatly indebted to Universidad de Concepción (UdeC), Chile, for its huge support and facilities. We also acknowledge the corresponding Fondecyt Regular (No 1140420) and postdoctoral (No 3200832) Projects Programa Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT) de la Agencia Nacional de Investigación y Desarrollo, Chile. The authors acknowledge Vishwanath H S for designing graphical abstract.
Publisher Copyright:
© 2022, The Author(s).
PY - 2022/12
Y1 - 2022/12
N2 - Nanofluids are a class of fluids prepared by dispersing nanoparticles in conventional base fluids. Owing to their excellent thermo-physical properties, nanofluids find potential applications in manufacturing industries. They are introduced to overcome the limitation with using traditional base fluids like water having low thermal conductivity (~ 0.612 W/mK at room temperature). The thermal conductivity of a base fluid is considerably increased by adding a modest number of nanoparticles to it. In the present work, we have prepared silver nanoparticles and nanorods using the simple chemical reduction method. UV–Visible spectroscopy and field emission scanning electron microscopy were used to investigate the optical characteristics and morphology of the produced nanomaterials. Furthermore, the effect of volume loadings of produced nanomaterials (0, 2%, 4%, 6%), as well as temperature on the thermal conductivity of the base fluids was investigated. The results are compared to different silver nanoparticles (AgNPs) loadings in the base fluid. Both silver nanoparticles and nanorods have optimal heat conductivity at 2 vol%. It is interesting to note that fluids with silver nanorods (AgNRs) portrayed better results compared to nanoparticles and the maximum enhancement observed of 78.4% for AgNRs-based nanofluids at temperature 323 K, which is very high when compared to most of the previously reported values. Graphical abstract: [Figure not available: see fulltext.]
AB - Nanofluids are a class of fluids prepared by dispersing nanoparticles in conventional base fluids. Owing to their excellent thermo-physical properties, nanofluids find potential applications in manufacturing industries. They are introduced to overcome the limitation with using traditional base fluids like water having low thermal conductivity (~ 0.612 W/mK at room temperature). The thermal conductivity of a base fluid is considerably increased by adding a modest number of nanoparticles to it. In the present work, we have prepared silver nanoparticles and nanorods using the simple chemical reduction method. UV–Visible spectroscopy and field emission scanning electron microscopy were used to investigate the optical characteristics and morphology of the produced nanomaterials. Furthermore, the effect of volume loadings of produced nanomaterials (0, 2%, 4%, 6%), as well as temperature on the thermal conductivity of the base fluids was investigated. The results are compared to different silver nanoparticles (AgNPs) loadings in the base fluid. Both silver nanoparticles and nanorods have optimal heat conductivity at 2 vol%. It is interesting to note that fluids with silver nanorods (AgNRs) portrayed better results compared to nanoparticles and the maximum enhancement observed of 78.4% for AgNRs-based nanofluids at temperature 323 K, which is very high when compared to most of the previously reported values. Graphical abstract: [Figure not available: see fulltext.]
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U2 - 10.1007/s10973-022-11604-0
DO - 10.1007/s10973-022-11604-0
M3 - Article
AN - SCOPUS:85138745418
SN - 1388-6150
VL - 147
SP - 14031
EP - 14038
JO - Journal of Thermal Analysis and Calorimetry
JF - Journal of Thermal Analysis and Calorimetry
IS - 24
ER -