Mehrabi, MehdiSharifpur, MohsenMeyer, Josua P.2020-07-172020-07-172019-04-04Mehrabi, M., Sharifpur, M. & Meyer, J.P. Electrical conductivity and pH modelling of magnesium oxide–ethylene glycol nanofluids. Bulletin of Materials Science 42, 108 (2019). https://doi.org/10.1007/s12034-019-1808-2.0250-4707 (print)0973-7669 (online)10.1007/s12034-019-1808-2http://hdl.handle.net/2263/75351Nanofluids as new composite fluids have found their place as one of the attractive research areas. In recent years, research has increased on using nanofluids as alternative heat transfer fluids to improve the efficiency of thermal systems without increasing their size. Therefore, the examination and approval of different novel modelling techniques on nanofluid properties have made progress in this area. Stability of the nanofluids is still an important concern. Research studies on nanofluids have indicated that electrical conductivity and pH are two important properties that have key roles in the stability of the nanofluid. In the present work, three different sizes of magnesium oxide (MgO) nanoparticles of 20, 40 and 100 nm at different volume fractions up to 3% of the base fluid of ethylene glycol (EG) were studied for pH and electrical conductivity modelling. The temperature of the nanofluids was between 20 and 70◦C for modelling. A genetic algorithm polynomial neural network hybrid system and an adaptive neuro-fuzzy inference system approach have been utilized to predict the pH and the electrical conductivity of MgO–EG nanofluids based on an experimental data set.en© Indian Academy of Sciences 2019NanofluidsElectrical conductivityEthylene glycolMagnesium oxide (MgO)Potential of hydrogen (pH)Adaptive neuro-fuzzy inference system (ANFIS)Genetic algorithm polynomial neural networks (GA-PNN)Engineering, built environment and information technology articles SDG-04SDG-04: Quality educationEngineering, built environment and information technology articles SDG-07SDG-07: Affordable and clean energyEngineering, built environment and information technology articles SDG-09SDG-09: Industry, innovation and infrastructureEngineering, built environment and information technology articles SDG-12SDG-12: Responsible consumption and productionEngineering, built environment and information technology articles SDG-13SDG-13: Climate actionArticle