Numerical and experimental investigations of heat transfer inside a rectangular channel with a new tilt angle of baffles for solar air heater

Authors

  • Zouhair Aouissi Laboratoire de Génie Mécanique (LGM), Faculty of Technology, University of Biskra 07000, Algeria
  • Foued Chabane Laboratoire de Génie Mécanique (LGM), Faculty of Technology, University of Biskra 07000, Algeria
  • Mohamed-Saleh Teguia Laboratoire de Génie Mécanique (LGM), Faculty of Technology, University of Biskra 07000, Algeria
  • Djamel Bensahal Laboratory of Mechanic, Faculty of Technology, University of Laghouat, Algeria
  • Noureddine Moummi Laboratoire de Génie Mécanique (LGM), Faculty of Technology, University of Biskra 07000, Algeria
  • Abdelhafid Brima Laboratoire de Génie Mécanique (LGM), Faculty of Technology, University of Biskra 07000, Algeria

DOI:

https://doi.org/10.38208/jret.v1i1.376

Keywords:

Solar air collector, Baffles, Mass flow, Heat transfer coefficient, Ansys

Abstract

This work represents an experimental and numerical study of heat transfer by forced convection inside a channel containing the baffles of a solar collector. The study chose the shape of the baffles as an important factor to improve heat exchange, which has a rectangular shape and is transversal with air flowing at an angle of inclination ? = 90 degrees. The study was conducted at different mass flow rates and different times of the day, to find out the effect of these conditions on the convective heat transfer from the absorber plate to the air through the channel of the collector. The operating conditions taken from the experiment were entered as boundary conditions in CFD, for a comparative study between the heat transfer coefficient by convection of the measurement data, and the simulation data. It was found that the results of it in the numerical and experimental methods gave a good approach, also it can be concluded that this coefficient was affected by different parameters such as the mass flow rate, absorber temperature, and shape of the baffles. Through the results, it was confirmed that when the Reynolds number increases, it means an increase in velocity, which means that the air passing through the duct becomes cooler, therefore there is a difference in temperature between the passing air and the absorber plate, and this leads to an increase in heat transfer between the air and the absorber plate.

Published

2022-11-11

Issue

Vol. 1 (2023): Issue In Progress

Section

Articles

Copyright (c) 2022 Zouhair Aouissi, Foued Chabane, Mohamed-Saleh Teguia, Djamel Bensahal, Noureddine Moummi, Abdelhafid Brima

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

ASPS journals are a peer-reviewed and dedicated to engineering sciences and technology. The ASPS journals provide immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.

Upon acceptance of an article, the corresponding author will be directed to sign a copyright form on behalf of coauthor(s). In this form, author(s) can agree that ASPS, or another company, sponsors the free access of the article. Thereby, sponsors are required to pay the free access of the article. In this case, there is no Submission, Publication or Processing fees on the charge of the authors.

In the copyright form,, author(s) of the accepted article agree to the following terms:

i) The article has not been previously published, elsewhere either in print or on-line, nor is it before another journal for consideration (If not, email explanation should be communicated immediately to the Editor).

ii) The responsibility for the contents of the paper rests upon the authors.

iii) The paper has been prepared according to the research and publication ethics listed the copyright form, also available in ASPS Website.

iv) Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in the ASPS journal.

v) Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in the ASPS journal.

vi) Authors are permitted to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access). Any such posting made before acceptance and publication of the Work shall be updated upon publication to include a reference to the ASPS journal and a link to the online abstract for the final published Work in the Journal.