%0 Conference Paper
%A Pendyala, R.
%A Ilyas, S.U.
%A Lim, L.R.
%A Marneni, N.
%D 2016
%F scholars:7421
%I Elsevier Ltd
%K Carbon; Carbon nanotubes; Computational fluid dynamics; Graphite; Heat convection; Heat flux; Heat transfer; Heat transfer coefficients; Insulating oil; Nanofluidics; Nanoparticles; Natural convection; Process engineering; Thermoanalysis; Yarn, Heat transfer performance; Nanofluids; Nanoparticle concentrations; Overall heat transfer coefficient; Overall heat transfer performance; Particle loading; Thermal Performance; Velocity profiles, Oil filled transformers
%P 1162-1169
%R 10.1016/j.proeng.2016.06.619
%T CFD Analysis of Heat Transfer Performance of Nanofluids in Distributor Transformer
%U https://khub.utp.edu.my/scholars/7421/
%V 148
%X Nanofluids are considered as promising heat transfer fluids due to their enhanced thermal properties. Addition of nanoparticles in transformer oil can increase overall heat transfer performance and life span of transformer oil. Transformer oil is used in oil filled distributor transformers to dissipate heat from the system which operates on the principle of natural convection heat transfer. Numerical studies are carried out in slice model of distributor transformer using carbon nanotubes (CNT) and graphite based nanofluids. Thermal analysis of designed geometry is studied at varying nanoparticle concentrations (0-2 vol) in transformer oil using 3-Dimensional simulations. The slice model is developed with defined heat flux as boundary conditions at winding and core area. The temperature and velocity profiles are investigated at different particle loadings. Overall heat transfer coefficients of transformer oil with and without nanoparticles are calculated and compared. Nusselt and Rayleigh numbers are calculated to understand the natural convection behaviour of nanofluids inside the geometry. It is found that addition of CNT and graphite nanoparticles in transformer oil at varying particle loadings have significant impact on thermal performance of transformer oil due to better heat transfer coefficient than transformer oil. © 2016 The Authors.
%Z cited By 20; Conference of 4th International Conference on Process Engineering and Advanced Materials, ICPEAM 2016 ; Conference Date: 15 August 2016 Through 17 August 2016; Conference Code:131138