Journal Pre-proof Optimization of an axial turbine for a small scale ORC waste heat recovery system Ł. Witanowski, P. Klonowicz, P. Lampart, T. Suchocki, Ł. Jędrzejewski, D. Zaniewski, P. Klimaszewski PII: S0360-5442(20)31166-X DOI: https://doi.org/10.1016/j.energy.2020.118059 Reference: EGY 118059 To appear in: Energy Received Date: 13 December 2019 Revised Date: 17 April 2020 Accepted Date: 4 June 2020 Please cite this article as: Witanowski Ł, Klonowicz P, Lampart P, Suchocki T, Jędrzejewski Ł, Zaniewski D, Klimaszewski P, Optimization of an axial turbine for a small scale ORC waste heat recovery system, Energy (2020), doi: https://doi.org/10.1016/j.energy.2020.118059. This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. 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. © 2020 Published by Elsevier Ltd.