Accepted Manuscript Thermo-hydraulic performance of a biological nanofluid containing graphene nanoplatelets within a tube enhanced with rotating twisted tape Mehdi Bahiraei, Nima Mazaheri, Faegheh Aliee, Mohammad Reza Safaei PII: S0032-5910(19)30545-5 DOI: https://doi.org/10.1016/j.powtec.2019.07.053 Reference: PTEC 14506 To appear in: Powder Technology Received date: 30 January 2019 Revised date: 8 June 2019 Accepted date: 13 July 2019 Please cite this article as: M. Bahiraei, N. Mazaheri, F. Aliee, et al., Thermo-hydraulic performance of a biological nanofluid containing graphene nanoplatelets within a tube enhanced with rotating twisted tape, Powder Technology, https://doi.org/10.1016/ j.powtec.2019.07.053 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.