Effect of Concentration and Loading Fluid of Nanofluids on the Thermal Resistance of Sintered Powder Wick Heat Pipe


Article Preview

Heat pipes have been widely used as one of the alternative methods to absorb more heat in the cooling systems of electronic devices. One of the ways to improve the thermal performance of heat pipes is to change the fluid transport properties and flow features of working fluids using nanofluids. The purpose of this research was to investigate the effect of Al2O3-water nanofluids concentration and fluid loading to the thermal resistance between evaporator and adiabatic section of copper straight sintered copper powder wick heat pipe. In this research, sintered powder wick heat pipes were manufactured and tested to determine the thermal resistance of the sintered powder wick heat pipes which charged with water and Al2O3-water nanofluids. The concentrations of the nanoparticles were varied from 1 %, 3% and 5 % of the volume of the base fluid. The result shows that Al2O3-water nanofluids have the ability to reduce the temperature at the evaporator section and the thermal resistance of heat pipe. The increase in nanofluids concentration could give significant effect to reduce the thermal resistance of heat pipes. The amount of working fluid charged into the heat pipes also gives an effect in heat pipes thermal resistance, where the thermal resistance was lower when the heat pipe was charged with 60% of its volume. The formation of coating layer at sintered powder wick also can fixed the wick porosity and cause roughness on the surface of granular pore which the increased of capillary could give the effect for enhancement of heat pipe performance.



Edited by:

Tan Jin




N. Putra et al., "Effect of Concentration and Loading Fluid of Nanofluids on the Thermal Resistance of Sintered Powder Wick Heat Pipe", Advanced Materials Research, Vol. 651, pp. 728-735, 2013

Online since:

January 2013




[1] K. S Kim, M.H. Won, J.W. Kim, B.J. Back, Heat pipe cooling technology for desktop PC CPU. Applied Thermal Engineering 23(9) (2003) 1137-1144.

DOI: https://doi.org/10.1016/s1359-4311(03)00044-9

[2] M.E. Kabay, A Brief History of Computer Crime: An Introduction Of Student, School of Graduate Studies Norwich University, (2008).

[3] Ommi, Masaru, T. Fukumoto, State-of-the-art technologies of micro heat-pipe heat-sinks for notebook PCs thermal products Dept., (2000) Electronic Components Division and Components and Mounting Technology Development.

[4] H.B. Ma, C. Wilson, B. Borgmeyer, K. Park, Q. Yu, S.U.S. Choi, M. Tirumala, Effect of nanofluid on the heat transport capability in an oscillating heat pipe. Applied Physics Letters 88 (2006)143-116.

DOI: https://doi.org/10.1063/1.2192971

[5] Choi SUS. Enhancing thermal conductivity of fluids with nanoparticles. ASME fed 231 (995) 99-105.

[6] Jacopo Buongiorno, et al. A benchmark study on the thermal conductivity of nanofluids. Applied Physics 106 094312 (2009).

[7] S.K. Das, N. Putra, P. Thiesen, and W. Roetzel, Temperature dependence of thermal conductivity enhancement for nanofluids. Transactions of ASME, Journal of Heat Transfer 125 (2003) 567-574.

DOI: https://doi.org/10.1115/1.1571080

[8] S.P. Jang, Effect of various parameters on nanofluid thermal conductivity. Journal of Heat Transfer 129 (2007) 617-623.

[9] Zhen Hua Liu, QunZhi Zhu. Application of aqueous nanofluids in a horizontal mesh heat pipe. Journal of Energy Conversion and Management, 52 (2011) 292-300.

DOI: https://doi.org/10.1016/j.enconman.2010.07.001

[10] Kyu Hyung Do, Hyo Jun Ha and Seok Pil Jang. Thermal Resistance of Screen Mesh Wick Heat Pipes Using the Water-based Al2O3nanofluids. International Journal of Heat and Mass Transfer, 53 (2010) 5888-5894.

DOI: https://doi.org/10.1016/j.ijheatmasstransfer.2010.07.050

[11] Jian Qu, Hui-yin Wu, Ping Cheng. Thermal performance of an oscillating heat pipe with Al2O3-water nanofluids. International Communications in Heat and Mass Transfer 37 (2010) 111-115.

DOI: https://doi.org/10.1016/j.icheatmasstransfer.2009.10.001

[12] Z. Liu, and Q. Zhu, Application of Aqueous Nanofluids on Heat Pipe Thermal Efficiency, International Communication in Heat and Mass Transfer, 35. (2008) 1316-1319.

DOI: https://doi.org/10.1016/j.icheatmasstransfer.2008.07.010

[13] N. Putra, W.N. Septiadi, H. Rahman, R. Irwansyah, Thermal performance of screen mesh wick heat pipes with nanofluids experimental, Thermal and Fluid Science 40 (2012) pp.10-17.

DOI: https://doi.org/10.1016/j.expthermflusci.2012.01.007

[14] D. Wen, Y. Ding, Effective thermal conductivity of aqueous suspensions of carbon nanotubes (carbon nanotube nanofluids), Journal of Thermophysics and Heat Transfer 18 (4) (2004) 481–485.

DOI: https://doi.org/10.2514/1.9934

[15] H.A. Mintsa, G. Roy, C.T. Nguyen, D. Doucet, New temperature dependent thermal conductivity data for water-based nanofluids, International Journal of Thermal Sciences 48 (2) (2009) 363–371.

DOI: https://doi.org/10.1016/j.ijthermalsci.2008.03.009

[16] J. -H. Lee, K.S. Hwang, S.P. Jang, B.H. Lee, J.H. Kim, S.U.S. Choi. Effective viscosities and thermal conductivities of aqueous nanofluids containing low volume concentrations of Al2O3 nanoparticles. Int. J. Heat Mass Transfer 53 (2010) 376-383.

DOI: https://doi.org/10.1016/j.ijheatmasstransfer.2007.10.026

[17] X. F Yang, Z. Liu, J. Zhao. Heat transfer performance of a horizontal micro grooved heat pipe using CuO nanofluid. J. Micromech. Microeng 18 (2008) 035038.

DOI: https://doi.org/10.1088/0960-1317/18/3/035038

[18] H. D Kim, J. Kim, M. H Kim. Experimental studies on CHF characteristics of nano-fluids at pool boiling. Int. J. Multiph. Flow 33 (2007) 691-706.

DOI: https://doi.org/10.1016/j.ijmultiphaseflow.2007.02.007

[19] Kyu Hyung Do, Seok Pil Jang, Effect of nanofluids on the thermal performance of a flat micro heat pipe with a rectangular grooved wick, International Journal of Heat and Mass Transfer, Volume 53, Issues 9–10, (2010), 2183-2192.

DOI: https://doi.org/10.1016/j.ijheatmasstransfer.2009.12.020

Fetching data from Crossref.
This may take some time to load.