Authors:
Anirban Das,Tarun Kanti Pal,Nairanjana Chowdhury,DOI NO:
https://doi.org/10.26782/jmcms.2022.03.00004Keywords:
Nanofluids,equilibrium molecular dynamics (EMD) simulation,thermal-conductivity,heat capacity,Abstract
Prolonged use of domestic and industrial applications gives rise to high heat generation in the systems. Smart materials like nanofluids can be useful to overcome this modern-day problem. In this study we are reporting the water-based nanofluids, to challenge this problem. Due to the availability of water in Bengal, the simplest solution for cooling a machine is to flow water surrounding it. The nanofluids we have synthesized are metallic nanoparticles dispersed in water, which is considered as base fluid. The heat capacity and thermal conductivity of the nanofluids were predicted by the equilibrium molecular dynamics (EMD) simulation. It is observed that dispersed nanoparticles help an enchantment in thermal-conductivity of the fluids whereas the heat capacity decreases by a small value. The low-cost sol-gel method was used to synthesize the Cu and Ag nanoparticles and later disperses the same in distilled water in suitable wt%. Nanofluids were subjected to ultrasonic studies around room temperature. The thermal conductivity of the used fluids is the function of the velocity values of ultrasonic wave propagation through the fluid system. The experimental measured thermal-conductivity values show an enhancement of about 30% in comparison to the base fluid water in ambient temperature.Refference:
I. Farzaneh, H., Behzadmehr, A., Yaghoubi, M., Samimi, A., Sarvari, S.M.H.: Stability of nanofluids: molecular dynamic approach and experimental study. Energy Convers. Manag. 111, 1–14 (2016).
II. Fatemeh Jabbari, Seyfolah Saedodin, and Ali Rajabpour, Experimental investigation & MD simulations of viscosity of CNT-water nanofluid at different temperatures & volume fractions of nanoparticles, J. Chem. Eng. Data 2019, 64, 1, 262–272 (2018).
III. Lee, S.L., Saidur, R., Sabri, M.F.M., Min, T.K.: Effects of the particle size and temperature on the efficiency of nanofluids using MD simulation. Numer. Heat Transf. A Appl. 69, 996–1013 (2016).
IV. Lenin, R., Joy, P.A.: Studies on the role of unsaturation in the fatty acid surfactant molecule on the thermal conductivity of magnetite nanofluids. J. Colloid Interface Sci. 506, 162–168 (2017).
V. Leong, K.Y., Razali, I., Ku Ahmad, K.Z., Ong, H.C., Ghazali, M.J., Abdul Rahman, M.R.: Thermal-conductivity of an ethylene glycol/water-based nano-fluid with copper-titanium dioxide nanoparticles: an experimental approach. Int. Commun. Heat Mass Transf. 90, 23–28 (2018).
VI. Masoud Farzinpour, Davood Toghraie, Babak Mehmandoust, Farshid Aghadavoudi & Arash Karimipour, MD simulation of ferronanofluid behavior in a nanochannel in the presence of constant & time-dependent magnetic fields, Journal of Thermal Analysis & Calorimetry volume 141, pages2625–2633 (2020).
VII. S. Özerinç, S. Kakaç, and A. G. YazIcIoğlu, “Enhanced thermal-conductivity of nanofluids: a state-of-the-art review,” Microfluidics and Nanofluidics, vol. 8, no. 2, pp. 145–170, 2010.
VIII. Stephen U. S. Choi & J. A. Eastman, Enhancing thermal conductivity of fluids with nanoparticles ASME international Mechanical Engineering Congress and Exposition, November 12-17,1995.
IX. Ueki, Y., Aoki, T., Ueda, K., Shibahara, M.: Thermophysical properties of carbon-based material nanofluid. Int. J. Heat Mass Transf. 113, 1130–1134 (2017).
X. V. Trisaksri and S. Wongwises, “Critical review of heat transfer characteristics of nanofluids,” Renewable and Sustainable Energy Reviews, vol. 11, no. 3, pp. 512–523, 2007.