CFD optimization of a heat exchanger for energy recovery in a stationary single-cylinder diesel engine
DOI:
https://doi.org/10.22517/23447214.24557Keywords:
Energy recovery, internal combustion engine, thermoelectric effect, thermoelectric generator.Abstract
The implementation of thermoelectric generators (TEG) has been a promising response to the energy problem in internal combustion engines, which has motivated the study of the potential for energy recovery in the exhaust gas stream of a single-cylinder diesel engine using a thermoelectric generator, analyzing the importance of the heat exchanger geometry in the performance of the TEG. Considering many investigations, 3 different heat exchanger geometries were developed; the behavior of the exhaust gases was simulated with the OpenFOAM ® software, using a realizable model, where a good quality mesh was established. In addition, a mesh independence study was performed, where stability was achieved from 1’000,000 elements. Experimental validation was carried out, and an average relative error of 2.23% was obtained, with which the results were classified as reliable. The simulations allowed the analysis of variables such as heat transfer, voltage, and current generated by thermoelectric modules, pressure drop, turbulence kinetic energy (TKE), and turbulence eddy dissipation rate (TEDR). Finally, it was obtained that the geometry with parallel paths had a better performance with respect to the analyzed variables, allowing a generation of 63.56 W, a pressure drop 92% lower than the other proposals, and better performance in the TKE and TEDR.
Downloads
Downloads
-
Vistas(Views): 656
- PDF Descargas(Downloads): 281
Published
How to Cite
Issue
Section
License
The undersigned authors declare that the article submitted to the journal Scientia et Technica is an original work and that all its content is free of third-party copyright restrictions or has the corresponding authorizations. Consequently, the authors assume responsibility for any litigation or claim related to intellectual property rights, releasing the Technological University of Pereira and the journal Scientia et Technica from any liability.
If the submitted work is accepted for publication, the authors retain copyright to the article and grant the journal Scientia et Technica the right of first publication, as well as a non-exclusive, perpetual license to reproduce, edit, distribute, display, and publicly communicate the article in any medium or format, including print, electronic, databases, repositories, the Internet, or other scientific dissemination systems. The authors agree that the article will be published in open access and distributed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (CC BY-NC-SA 4.0).
The journal Scientia will respect in all cases the moral rights of the authors, in accordance with the provisions of article 30 of Law 23 of 1982 of the Republic of Colombia, recognizing the authorship of the work, the right to integrity and the right of disclosure, which are inalienable and non-waivable.