| Issue |
MATEC Web Conf.
Volume 286, 2019
14th Congress of Mechanics (CMM2019)
|
|
|---|---|---|
| Article Number | 08002 | |
| Number of page(s) | 3 | |
| Section | Heat Transfers, Mass Transfers, Renewable Energies and Environment | |
| DOI | https://doi.org/10.1051/matecconf/201928608002 | |
| Published online | 14 August 2019 | |
Heat transfer enhancement using two isothermal blocks in a cylindrical heat exchanger
Research Team “Energy systems, Mechanical structures and Materials, and Industrial Processes modeling”, MOSEM2PI, Mohammadia School of Engineers, Mohammed V University in Rabat.
The influence of two isothermal blocks placed in a low position φm=0.18π in a cylindrical heat exchanger is numerically studied. The governing equations are discretized by the centered finite difference method using the ADI scheme. By varying Rayleigh number range between 1000 and 10000, we are interested in the local Nusselt number and the local efficiency variations as a function of the angular coordinate φ. In one hand, we found that heat transfer is important in the superior zone of the annulus for high Ra and in the central zone for low Ra. On the other hand, compared to the without blocks configuration, heat transfer in the inferior and central zones is improved for all Ra.
Key words: Heat exchanger / isothermal blocks / efficiency.
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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