Titre :

Energetic performance optimization of a coaxial phase change material (PCM) regenerator

Auteur(s) :

El Fiti, Maryam [Auteur]
Université Mohammed VI Polytechnique [Ben Guerir] [UM6P]
Université Ibn Tofaïl [UIT]
Salihi, Mustapha [Auteur]
Université Mohammed VI Polytechnique [Ben Guerir] [UM6P]
Université Ibn Tofaïl [UIT]
Harmen, Yasser [Auteur]
Université Mohammed VI Polytechnique [Ben Guerir] [UM6P]
Université Ibn Tofaïl [UIT]
Chhiti, Younes [Auteur]
Université Mohammed VI Polytechnique [Ben Guerir] [UM6P]
Université Ibn Tofaïl [UIT]
Chebak, Ahmed [Auteur]
Université Mohammed VI Polytechnique [Ben Guerir] [UM6P]
M'Hamdi Alaoui, Fatima Ezzahrae [Auteur]
Abdelmalek Essaadi University [Tétouan] = Université Abdelmalek Essaadi [Tétouan] [UAE]
Université Mohammed VI Polytechnique [Ben Guerir] [UM6P]
Achak, Mounia [Auteur]
Université Mohammed VI Polytechnique [Ben Guerir] [UM6P]
Université Chouaib Doukkali [UCD]
Bentiss, Fouad [Auteur]
Université Chouaib Doukkali [UCD]
Jama, charafeddine [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]

Titre de la revue :

Journal of Energy Storage

Nom court de la revue :

Journal of Energy Storage

Numéro :

50

Pagination :

104571

Éditeur :

Elsevier BV

Date de publication :

2022-06

ISSN :

2352-152X

Mot(s)-clé(s) en anglais :

Thermal energy storage
Phase Change Materials (PCM)
Fin structures
Heat transfer enhancement
Coaxial regenerator
ANSYS Fluent

Discipline(s) HAL :

Chimie/Matériaux
Chimie/Polymères

Résumé en anglais : [en]

In the industrial sector, a large amount of energy is released at low temperatures, between 0 and 200 °C. To improve the overall energy efficiency of these processes, it is possible to recover this waste heat. The technology ...
Lire la suite >In the industrial sector, a large amount of energy is released at low temperatures, between 0 and 200 °C. To improve the overall energy efficiency of these processes, it is possible to recover this waste heat. The technology of thermal energy storage by Phase Change Materials (PCM) has appeared as one of the most economically viable methods for recovering waste heat. The PCM presents both a significant storage density and the possibility of energy restitution at a stable temperature. However, the low thermal conductivity of PCMs, specifically paraffins, limits its large-scale application. In this context, this study investigates the effect of the fins on the PCM regenerator behaviour. For that, a parametric study of the fins' number, length, thickness, and position is conducted. The volume occupied by the PCM was constant to keep the same energy density. The PCM's melting and solidification processes in a horizontal coaxial heat exchanger were numerically investigated using ANSYS Fluent commercial software. Paraffin wax with a melting point of 55 °C was used as PCM. The numerical study shows that the addition of longitudinal fins improves the apparent conductivity considerably and consequently reduces the melting time by up to 61%. The optimal configuration found in this study: fin number N = 4, dimensionless thickness = 0.1, dimensionless height = 0.9, and unevenly distributed fins. This configuration achieves a shorter time in completing the charging/discharging cycle of the PCM and allows a time saving of 21%.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Procédés de Recyclage et de Fonctionnalisation (PReF)

Date de dépôt :

2022-05-09T13:31:01Z
2022-05-10T10:31:50Z
2023-04-11T12:32:43Z