PENGARUH KONSENTRASI ZrO2 TERHADAP KORELASI PERPINDAHAN PANAS NANOFLUIDA AIR – ZrO2 UNTUK PENDINGIN REAKTOR
Keywords:
water-ZrO2 nanofluid, natural convection, triangular sub-channel, rectangular sub-channelAbstract
In line with the development of the passive safety concept for the safety systems of nuclear power plants, the natural convection heat transfer system plays an important role. The nanofluid as coolant fluid on nuclear safety system can be used in Emergency core cooling system and in reactor coolant system confinement. Several researchers have studied the conceptual design of nanofluid applications to improve the safety of the AP1000 and the emergency core cooling system at reactor power experiments. Application of nanofluid also began to be developed through the research of natural convection heat transfer in sub-channel. This study aimed to determine the effect of changes in the concentration of ZrO2 on natural convection heat transfer correlation with experimental approaches. The experimental data obtained is used to develop a general empirical correlation of heat transfer of natural convection. Research methods using test equipment vertical sub-channel with triangular and rectangular geometry using water and nanofluid water ZrO2. The concentration of nanoparticles in the solution used by 0.05 %, 0.10 % and 0.15 % in weight percent. The results showed that for the same Rayleigh number, the heat removal capability by nanofluid water-ZrO2 better than the transfer of heat by water. However, increasing the concentration of nanofluid not always get heat removal capability better.
References
Buongiorno, J. Nanofluids for enhanced economics and safety of nuclear reactors. Nuclear Technology. 2008;162: 80-91.
https://doi.org/10.13182/NT08-A3934
J.W. Pockett. Passive nuclear power, Westinghouse technology; 1989.
In Cheol Bang, Gyunyoung Heo, Yong Hoon Jeong and Sun Heo. An axiomatic design approach of nanofluid engineered nuclear safety features for generation III+ reactors. Nuclear engineering and technology. 2009; 4: 9
Ciptadi, A,. Kajian numerik karakteristik perpindahan panas konveksi alamiah, paksa dan gabungan pada sub-buluh dengan susunan silinder bujur sangkar. Tesis Program Magister, Institut Teknologi Bandung, Indonesia; 2010
Supriyadi, Joko. Perpindahan panas konveksi paksa, alamiah dan gabungan pada sub buluh dengan susunan silinder bujur sangkar. Tesis Program Magister, Institut Teknologi Bandung, Indonesia; 2010.
N.P. Tandian, E. Umar, T. Hardianto and A. Waluyo,. Theorical study of convective heat transfer in a vertical triangular sub channel. Proceedings of the International Conference of Fluid and Thermal Energy Convection, Tongyeong, Shouth Kore; 2009
Q. Li and Y. Xuan. Convective heat transfer performances of fluids with nano-particles. Proceedings of the 12th International Heat Transfer Conference; 2002. p. 483-488
Y. Yang, Z. G. Zhang, E. A. Grulke,W.B.Anderson, and G.Wu. Heat transfer properties of nanoparticle-in-fluid dispersions (nanofluids) in laminar flow. International Journal of Heat and Mass Transfer. 2005; 48:1107-1116.
https://doi.org/10.1016/j.ijheatmasstransfer.2004.09.038
M.AL-Arabi. Laminar natural convection heat transfer from the outer surface of a vertical circular cylinder. Journal of Heat and Mass Transfer. 1980; 23.
https://doi.org/10.1016/0017-9310(80)90137-4
K. Kamajaya, E. Umar, Sudjatmi KS. The development of empirical correlation equation at convection heat transfer correlation on vertical cylinder triangular lattice sub channels. Proceedings of the 7th International Conference on Fluid and Thermal Energy Conversion, Zhengzhou, China; 2011; p. 267-274.
https://doi.org/10.1063/1.4725463
K. Kamajaya, E. Umar, Sudjatmi KS. The study and development of the empirical correlations equition of natural convection heat transfer on vertical rectangular sub channels. Proceedings of The 3rd International Conference on Advances in Nuclear Science and Engineering, ICANSE-. Bali, Indonesia; 2011
https://doi.org/10.1063/1.4725463
K. Kamajaya, E. Umar, Sudjatmi KS. The empirical correlations for natural convection heat transfer of water-ZrO2 nanofluid in vertical sub-channel. Proceedings of The ICCHT The 6th International Conference on Cooling & Heating Technologies. Xian, China; 2012
Ulzie Rea, Tom McKrell, Lin-wen Hu, Jacopo Buongiorno. Laminar convective heat transfer and viscous pressure loss of alumina-water and zirconia-water nanofluids. International Journal of Heat and Mass Transfer. 2009; 52: 2042-2048
