COMPARISON OF THERMAL CONDUCTIVITY FOR HHT-24-CNF-BASED NANOFLUID USING DEIONIZED WATER AND ETHYLENE GLYCOL

Syarifah Norfatin Syed Idrus, Nor Salihah Zaini, Imran Syakir Mohamad, Norli Abdullah, Mohd Haizal Mohd Husin

Abstract


Carbon nanofibers (CNF) is one of potential nanoparticles that possess superior thermal conductivity. In this study, nanofluids with suspension of CNF in deionized water (DI water) and ethylene glycol (EG) are prepare. Thermal conductivity (TC) of the nanofluids are measured at 6°C, 25°C and 40°C using KD2 Pro Thermal Properties Analyser. The results show that, TC increases with increasing of temperature and CNF loading. Best TC is recorded by 36.7 % enhancement at 40 °C for EG based fluid with 0.9 wt% CNF loading. Meanwhile, for DI water based fluid, best TC enhancement (39.6 %) can be achieved with CNF loading of 0.7 wt% at 40°C. Overall, both based fluid show a promising enhancement in thermal conductivity. However, DI water based fluid show higher TC in comparison to EG based fluid due to the higher TC in standard DI water itself.


Keywords


Carbon nanofibers, deionized water, ethylene glycol, thermal conductivity

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References


Tun-Ping, T., Yu-Chun, H., Wei-Ping, W. and Yan-Bo, F. 2015. Performance Assessment of an Air-Cooled Heat Exchanger for Multiwalled Carbon Nanotubes-Water Nanofluids. Applied Thermal Engineering. 89: 346-355.

Riyad. T. Md., Munkhbayar, B., Nine, Md. J., Hanshil, C. and Hyomin, J. 2013. Effect of Functionalized MWCNTs/Water Nanofluids on Thermal Resistance and Pressure Fluctuation Characteristics in Oscillating Heat Pipe. International Communications in Heat and Mass Transfer. 48: 93-98.

Halelfadl, S., Estell, P., Aladag, B., Doner, N., & Mar, T. (2013). Viscosity of Carbon Nanotubes Water Based Nanofluids: Influence of Concentration and Temperature. International Journal of Thermal Science. 7:111-117.

Chia-Chen, L., Jen-Lien, L., Shu-Jiuan, H., Jyh-Tsung, L. and Ci-Huei, C. 2007. A New and Acid-Exclusive Method for Dispersing Carbon Multi-Walled Nanotubes in Aqueous Suspensions. Colloids and Surfaces A: Physicochemical. Eng. Aspects. 297: 275–281.

Nasiri, A., Shariaty-Niasar, M., Rashidi, A.M. and Khodafarin, R. 2012. Effect of CNT Structures on Thermal Conductivity and Stability of Nanofluid. International Journal of Heat and Mass Transfer. 55: 1529-1535.

Yao, W., Jun, W. and Fei, W. 2003. A Treatment Method to Give Separated Multi-Walled Carbon Nanotubes with High Purity, High Crystallization and A Large Aspect Ratio. Carbon. 14: 2939-2948.

Kumaresan, V. and Velraj, R. 2012. Experimental Investigation of the Thermo-Physical Properties of Water–Ethylene Glycol Mixture Based CNT Nanofluids. Thermochimica Acta. 545: 180-186.

Hwang, Y., Lee, J.K., Lee, C.H., Jung, Y.M., Cheong, S.I., Lee, C.G., Ku, B.B. and Jang, S.P. 2007, Stability and Thermal Conductivity Characteristic of Nanofluids. Thermochimica Acta. 455: 70-74.

Nathan, H., Delphine, R., Jean-Luc, M. and Sylvain, C. 2014, High Temperature and Long-Term Stability of Carbon Nanotube Nanofluids for Direct Absorption Solar Thermal Collectors. Solar Energy. 105: 82-90.

Omer, A.A. and Nor, A.C.S. 2015. The Effect of Temperature and Particles Concentration on the Determination of Thermo and Physical Properties of SWCNT-Nanorefrigerant. International Communications in Heat and Mass Transfer. 67: 8-13.

Min-Sheng, L., Mark Ching-Cheng, L., I-Te, H. and Chi Chuan, C. 2005. Enhancement of Thermal Conductivity with Carbon Nanotube for Nanofluids. International Communications in Heat and Mass Transfer. 32:1202-1210.

Abdullah, N., Yunus, W.M.D.Z.W. and Mohamad, I.S. 2015. Thermal Conductivity Comparisons of Original and Oxidized Multiwalled Carbon Nanotubes-Waterbased Fluids. Jurnal Teknologi. 76(9): 43-47.

Mohamad, I.S., Chitrambalam, S.T. and Hamid, S.B.A. 2012. Investigations on the Thermo-Physical Properties of Nanofluids-Based Carbon Nanofibers under Modified Testing Conditions. International Journal of Nanoelectronic and Materials. 5: 25-30.

Chen, L., Xie, H., Li, Y. & Yu, W. 2008. Nanofluids Containing Carbon Nanotubes Treated by Mechanochemical Reaction. Thermochimica Acta. 477: 21-24.

Yu, W. & Choi, S.U.S. 2003. The Role of Interfacial Layers in the Enhanced Thermal Conductivity of Nanofluids: A Renovated Maxwell Model. The Journal of Nanoparticle Research. 5: 167-171.

Esfe, H.M and Saedodin, S. 2014. Experimental Investigation and Proposes Correlations for Temperature Dependant Thermal Conductivity Enhancement of Ethylene Glycol Based Nanofluids Containing ZnO Nanoparticles. Journal of Heat and Mass Transfer Research. 1: 47-54




DOI: http://dx.doi.org/10.11113/jt.v77.6612

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