SCI和EI收录∣中国化工学会会刊

›› 2017, Vol. 25 ›› Issue (5): 547-554.DOI: 10.1016/j.cjche.2016.08.025

• Fluid Dynamics and Transport Phenomena • 上一篇    下一篇

Correlating thermal conductivity of pure hydrocarbons and aromatics via perceptron artificial neural network (PANN) method

Mostafa Lashkarbolooki1, Ali Zeinolabedini Hezave2, Mahdi Bayat3   

  1. 1 School of Chemical Engineering, Babol University of Technology, Babol, Iran;
    2 Islamic Azad University, Dashtestan Branch, Borazjan, Iran;
    3 Department of Chemical Engineering, Faculty of Engineering, University of Bojnord, Bojnord, Iran
  • 收稿日期:2016-06-24 修回日期:2016-08-24 出版日期:2017-05-28 发布日期:2017-07-06
  • 通讯作者: Mostafa Lashkarbolooki,E-mail address:m.lashkarbolooki@nit.ac.ir

Correlating thermal conductivity of pure hydrocarbons and aromatics via perceptron artificial neural network (PANN) method

Mostafa Lashkarbolooki1, Ali Zeinolabedini Hezave2, Mahdi Bayat3   

  1. 1 School of Chemical Engineering, Babol University of Technology, Babol, Iran;
    2 Islamic Azad University, Dashtestan Branch, Borazjan, Iran;
    3 Department of Chemical Engineering, Faculty of Engineering, University of Bojnord, Bojnord, Iran
  • Received:2016-06-24 Revised:2016-08-24 Online:2017-05-28 Published:2017-07-06

摘要: Accurate estimation of liquid thermal conductivity is highly necessary to appropriately design equipments in different industries. Respect to this necessity, in the current investigation a feed-forward artificial neural network (ANN) model is examined to correlate the liquid thermal conductivity of normal and aromatic hydrocarbons at the temperatures range of 257-338 K and atmospheric pressure. For this purpose, 956 experimental thermal conductivities for normal and aromatic hydrocarbons are collected from different previously published literature. During the modeling stage, to discriminate different substances, critical temperature (Tc), critical pressure (Pc) and acentric factor (ω) are utilized as the network inputs besides the temperature. During the examination, effects of different transfer functions and number of neurons in hidden layer are investigated to find the optimum network architecture. Besides, statistical error analysis considering the results obtained from available correlations and group contribution methods and proposed neural network is performed to reliably check the feasibility and accuracy of the proposed method. Respect to the obtained results, it can be concluded that the proposed neural network consisted of three layers namely, input, hidden and output layers with 22 neurons in hidden layer was the optimum ANN model. Generally, the proposed model enables to correlate the thermal conductivity of normal and aromatic hydrocarbons with absolute average relative deviation percent (AARD), mean square error (MSE), and correlation coefficient (R2) of lower than 0.2%, 1.05×10-7 and 0.9994, respectively.

关键词: Thermal conductivity, Artificial neural network, Critical properties, Hydrocarbons, Aromatics

Abstract: Accurate estimation of liquid thermal conductivity is highly necessary to appropriately design equipments in different industries. Respect to this necessity, in the current investigation a feed-forward artificial neural network (ANN) model is examined to correlate the liquid thermal conductivity of normal and aromatic hydrocarbons at the temperatures range of 257-338 K and atmospheric pressure. For this purpose, 956 experimental thermal conductivities for normal and aromatic hydrocarbons are collected from different previously published literature. During the modeling stage, to discriminate different substances, critical temperature (Tc), critical pressure (Pc) and acentric factor (ω) are utilized as the network inputs besides the temperature. During the examination, effects of different transfer functions and number of neurons in hidden layer are investigated to find the optimum network architecture. Besides, statistical error analysis considering the results obtained from available correlations and group contribution methods and proposed neural network is performed to reliably check the feasibility and accuracy of the proposed method. Respect to the obtained results, it can be concluded that the proposed neural network consisted of three layers namely, input, hidden and output layers with 22 neurons in hidden layer was the optimum ANN model. Generally, the proposed model enables to correlate the thermal conductivity of normal and aromatic hydrocarbons with absolute average relative deviation percent (AARD), mean square error (MSE), and correlation coefficient (R2) of lower than 0.2%, 1.05×10-7 and 0.9994, respectively.

Key words: Thermal conductivity, Artificial neural network, Critical properties, Hydrocarbons, Aromatics