Experimental investigation of relative thermal conductivity of MWCNTs-CuO/Water nanofluids

Subject Areas : Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering

مسعود زاده‌خواست ¹ , داود طغرایی ² , آرش کریمی‌پور ³

1 - دانشجوی کارشناسی ارشد، دانشکده مکانیک، دانشگاه آزاد اسلامی واحد نجف آباد
2 - رئیس دانشکده مکانیک
3 - استادیار، دانشکده مهندسی مکانیک، دانشگاه آزاد اسلامی واحد نجف آباد، ایران، اصفهان

Received: 2015-11-29 Accepted : 2016-03-02 Published : 2016-11-21

Keywords: temperature, Nanofluid, Thermal conductivity, volume fraction, Carbon nano tubes,

Abstract :

This work presents a model for calculating the effective ‎thermal conductivity of nanofluids. The proposed model ‎includes the effects of nanoparticles and thermal conductivity ‎base fluid.We will focus on experimental of the volume ‎concentration parameter and temperature on thermal ‎conductivity, nano-fluid combination and Multi-Walled ‎Carbon nanotubes-Oxide / Copper-paid deionized Water. This ‎water-based nanofluids, For two-step volume fractions of the ‎‎0.1, 0.2, 0.6 Percentage produced And then, Effective thermal ‎conductivity is measured precisely. In order to measure the ‎thermal conductivity of nanofluids. To measure the thermal ‎conductivity coefficient in THW method, KD2-pro and KS1 ‎probe was used, also with the fluid significantly enhancement ‎shows in thermal conductivity coefficient. Also with the fluid ‎significantly enhancement shows in thermal conductivity ‎coefficient. In lower volume fractions we observed ‎significantly increase in thermal conductivity and receive high ‎degree thermal. Due to the lack of similar studies Due to the ‎lack of similar studies to comprehensively and inefficient of ‎classical thermal conductivity, In order to estimate the thermal ‎conductivity of nanofluids An empirical model that estimates ‎the thermal conductivity of nanofluids model with deviation ‎margin is very low

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