Title :

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

Author(s) :

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

Journal title :

Journal of Energy Storage

Abbreviated title :

Journal of Energy Storage

Volume number :

50

Pages :

104571

Publisher :

Elsevier BV

Publication date :

2022-06

ISSN :

2352-152X

English keyword(s) :

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

HAL domain(s) :

Chimie/Matériaux
Chimie/Polymères

English abstract : [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 ...
Show more >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%.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Procédés de Recyclage et de Fonctionnalisation (PReF)

Submission date :

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