02000nas a2200241   4500008004100000022001400041245012900055210006900184260000800253300001200261490000600273520114800279653002301427653002501450653002001475653001501495653001501510100002501525700002401550700002201574700003001596856013201626       2017                        eng d  a2169-432X00aSynthesis of copper nanoparticles in presence of surfactants and evaluation of heat transfer performance of copper nanofluid0 aSynthesis of copper nanoparticles in presence of surfactants and  cAPR  a334-3420 v63 a<p>Copper nanoparticles were synthesized by reduction of copper nitrate hexahydrate using glucose as a green reducing agent. Effect of various synthesis parameters such as the amount of reducing agent, type of surfactant, the concentration of surfactant on particle size and morphology has been studied. Particles thus synthesized were characterized using analytical tools like X-ray Diffraction (XRD), Dynamic Light Scattering (DLS) and Scanning Electron Microscopy (SEM). XRD results show copper peaks at 2 angles 43.34, 50.48 and 74.19° corresponding to the planes (111), (200) and (220) respectively and possessing FCC (Face Centred Cubic) crystal lattice and polydispersed particles with crystallite size ranging from 43 to 103 nm. Further Cu nanoparticles were dispersed in water to prepare nanofluid and heat transfer properties such as heat transfer coefficient, viscosity and density were evaluated. Nanofluid models proposed elsewhere were also used for theoretical property evaluations. Nearly 100% increase in heat transfer coefficient was observed at 1% (by volume) particle concentration of copper nanoparticles in water.</p>10aChemical Reduction10aCopper nanoparticles10agreen synthesis10aNanofluids10asurfactant1 aKapadnis, Chetan, V.1 aGundeli, Kartik, P.1 aSaini, Daulat, R.1 aBhatkhande, Dhananjay, S.  uhttps://library.ncl.res.in/content/synthesis-copper-nanoparticles-presence-surfactants-and-evaluation-heat-transfer-performance