Journal
CHINESE JOURNAL OF CHEMICAL ENGINEERING
Volume 25, Issue 9, Pages 1273-1281Publisher
CHEMICAL INDUSTRY PRESS CO LTD
DOI: 10.1016/j.cjche.2016.10.016
Keywords
Nanofluids; ANN; Equation of state; Model
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In this work, some thermodynamic properties of nanofluids such as Sb2O5; SnO2/(EG + H2O), ZnO/(EG + H2O), Al2O3/(EG + H2O), ZnO/(PEG + H2O), ZnO/PEG, and TiO2/EG were estimated from the extended Tao-Mason equation of state, together with the Pak and Cho equation in various temperature, pressure, and volume fractions. The equations of state using minimum input data and density at room temperature as scaling constants, were developed to estimated densities of the above mentioned nanofluids. Furthermore, the artificial neural network plus principal component analysis (PCA) technique (with 20 neuron in hidden layer) was performed over the whole range of available conditions. The AADs of the calculated molar densities of all nanofluids using the EOS and ANN at various temperatures and volume fractions are 1.11% and 0.48%, respectively. In addition, the heat capacity and isentropic compressibility of the above mentioned nanofluids are predicted using obtained densities of EOS with the Pak and Cho equation. (C) 2016 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.
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