The discussions provided in this short communication revealed that the Corcione model [2] is a suitable model to estimate the dynamic viscosity of ZnO/ water nanofluid. Therefore, the use of this model in the study of Hosseinzadeh et al. [1] was well justified. Therefore, the claim of Edalatpour and Moghadam [12] as: “This conspicuous inaccurate relation for predicting the dynamic viscosity severely affects the Navier-Stokes equations which consist of nanofluid velocity terms. In addition to that, the numerical results put on display for nanofluid mass flow rate and outlet temperature are false, as well. Both outlet temperature and nanofluid mass flow rate are used to calculate thermal energy efficiency. Consequently, the results germane to the thermal energy efficiencies of their system are egregiously false. In conclusion, due to the incorrect use of the dynamic viscosity relation, the research established by [1] is prone to unquestionable errors and their numerical and experimental results and validations along with their discussions and conclusions will definitely mislead researchers” is obviously faulty and inaccurate. It is egregiously unfair, that Edalatpour and Moghadam [12] based on their faulty argument even included the “experimental results” of [1] in their attribute of being misleading to researchers. Therefore, based on the detailed discussion provided in this short communication, the attribute of being “egregiously false” and misleading to researchers is a better fit for the comments established in [12]. Thus, the comments of Edalatpour and Moghadam [12] are strongly rejected.

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