Accepted Manuscript Title: Heat transfer augmentation in double pipe water to air counter flow heat exchanger with helical surface disc turbulators Authors: Saurabh Yadav, Santosh K. Sahu PII: S0255-2701(18)30833-X DOI: https://doi.org/10.1016/j.cep.2018.11.018 Reference: CEP 7433 To appear in: Chemical Engineering and Processing Received date: 14 July 2018 Revised date: 25 October 2018 Accepted date: 25 November 2018 Please cite this article as: Yadav S, Sahu SK, Heat transfer augmentation in double pipe water to air counter flow heat exchanger with helical surface disc turbulators, Chemical Engineering and Processing - Process Intensification (2018), https://doi.org/10.1016/j.cep.2018.11.018 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.