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The main focus of the present work is to characterize the ZnO nanoparticles further to prepare the ZnO nanofluid with base fluid as deionised water and to investigate enhancement in critical heat flux at different weight concentrations of nanofluids. The size of nanoparticles is found to be 55.25nm.
To study Critical Heat Flux (CHF) enhancement using ZnO nanofluid, different weight concentration of nanofluid are prepared. It is observed that maximum enhancement 47.16 percent observed for 1.5 weight percent of ZnO nanofluid. Surface roughness and scanning electron microscopy of heater surface is carried out for all weight concentrations of nanofluid, which shows increase in Ra value up to some extent then it decreases and porosity on the surface of heater observed in SEM, is the source to enhance CHF.
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 M.N. Özisik, Heat Transfer, A Basic Approach, McGraw-Hill InternationalEditions,1985.
 J.G. Collier, J.R. Thome, Convective Boiling and Convection, third ed., Oxford Science Publication, 2001.
 I.L. Pioro, W. Rohsenow, S.S. Doerffer, Nucleate pool-boiling heat transfer. I: review of parametric affects of boiling surface, Int. J. Heat Mass Transfer 47 (2004) 5033–5044.
 I.L. Pioro, W. Rohsenow, S.S. Doerffer, Nucleate pool-boiling heat transfer. II: review assessment of prediction methods, Int. J. Heat Mass Transfer 47 (2004) 5045–5057.
 Jagdeep M.Kshirsagar, Ramakant Shrivastava,‘‘Review of the influence of nanoparticles on thermal conductivity, nucleate pool boiling and critical heat flux’’Heat Mass Transfer (2015) 51:381–398 DOI 10.1007/s00231-014-1412-3
. H. Kim, J.kim, M Kim, ‘‘Experimental study on CHF characteristics of water-TiO2 nanofluid’’ Nucl. Eng.Technol.38 (1)(2006)61-69
 C.C. Pitts, G. Leppert, The critical heat flux for electrically heated wires in saturated pool boiling, Int. J. Heat Mass Transfer 9 (4) (1966) 365–370. IN363–IN364, 371–377.
 S.J.D. van Stralen, W.M. Sluyter, Investigations on the critical heat flux of pure liquids and mixtures under various conditions, Int. J. Heat. Mass Transfer 12 (11) (1969) 1353– 1384.
 K.-H. Sun, J.H. Lienhard, The peak pool boiling heat flux on horizontal cylinders, Int. J. Heat Mass Transfer 13 (9) (1970) 1425–1430. IN1421–IN1423, 1431–1439.
 N. Bakhru, J.H. Lienhard, Boiling from small cylinders, Int. J. Heat. Mass Transfer 15 (11) (1972) 2011–2025.
 S.M. You, Y.S. Hong, J.P. O’Connor, The onset of film boiling on small cylinders: local dry out and hydrodynamic critical heat flux mechanisms, Int. J. Heat. Mass Transfer 37 (16) (1994) 2561–2569.
. Holman J.P.Experimental methods for engineer’s, 7th edition.Chap3, McGraw-Hill, New York (2007).
 Y. Asakura, M. Kikuchi, S. Uchida, H. Yuda, Deposition of iron oxide on heated surfaces in boiling water, Nucl. Sci. Eng. 67 (1978) 1–7.
. S.J.Kim, I.C.Bang, J.Buongiorno,L.W.Hu, ‘‘ Surface wettability changes during pool boiling of nanofluids and its effect on critical heat flux’’ Int. Journal of Heat Mass Transfer 50(2007)4105-4116.
 Jagdeep M. Kshirsagar, Ramakant Shrivastava, ‘‘Preparation and Characterization of Copper oxide Nanoparticles and determination of enhancement in Critical Heat Flux’’ Journal of Thermal Science (2015). DOI: 10.2298/TSCI140619026K.
. Ramkrishna N. Hegde, S.S.Rao, R.P.Reddy, ‘‘Investigation on Heat Transfer Enhancement in Pool Boiling with Water-CuO nanofluids’’Journal of thermal science Vol.21, No.02 (2012) 179- 183 DOI: 10.1007/s11630-012-0533-6