Molecular dynamics study of the thermal behavior of ammonia refrigerant in the presence of copper nanoparticles at different volume ratios and initial temperatures

Generally, the addition of nanoparticles to a fluid significantly increases the thermal conductivity of structures. In the present study, the effect of nanoparticle volume ratio and initial temperature on ammonia/copper nano-refrigerant’s thermal behavior in an external electric field in an aluminum...

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Bibliographic Details
Published in:Journal of molecular modeling 2022-06, Vol.28 (6), p.157-157, Article 157
Main Authors: Abed, Hossein, Ali Fazilati, Mohammad, Toghraie, Davood, Pirmoradian, Mostafa, Mehmandoust, Babak
Format: Article
Language:English
Subjects:
Aluminum
Ammonia
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Computer Appl. in Life Sciences
Computer Applications in Chemistry
Copper
Dynamic structural analysis
Electric fields
Heat conductivity
Heat transfer
Molecular dynamics
Molecular Medicine
Nanochannels
Nanoparticles
Original Paper
Refrigerants
Temperature
Theoretical and Computational Chemistry
Thermal conductivity
Thermodynamic properties
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Summary:Generally, the addition of nanoparticles to a fluid significantly increases the thermal conductivity of structures. In the present study, the effect of nanoparticle volume ratio and initial temperature on ammonia/copper nano-refrigerant’s thermal behavior in an external electric field in an aluminum nanochannel was studied by molecular dynamics simulations. To study the thermal behavior of the structures, quantities such as particle phase-changed rates (condensation process), phase change duration, and thermal conductivity were investigated. Results show that with the addition of 5% copper to the base fluid, the rate of the phase-changed particles increases from 53 to 71% during 2.40 ns. Also, increasing the volume ratio of nanoparticles up to 5% leads to an increase in thermal conductivity from 0.76 to 0.86 W/mK. On the other hand, increasing the initial temperature up to 350 K reduces the phase-changed particles’ rate from 53 to 49% during 2.9 ns. The initial temperature increases from 300 to 350 K, and the thermal conductivity decreases from 0.76 to 0.73 W/mK. The results of this simulation are expected to improve the thermal performance of different nano-refrigerants.
ISSN:1610-2940
0948-5023
DOI:10.1007/s00894-022-05156-1