Skip to main content

Research Repository

Advanced Search

Improved melting of latent heat storage via porous medium and uniform Joule heat generation

Mohammed, Hayder I.; Talebizadehsardari, Pouyan; Mahdi, Jasim M.; Arshad, Adeel; Sciacovelli, Adriano; Giddings, Donald

Improved melting of latent heat storage via porous medium and uniform Joule heat generation Thumbnail


Hayder I. Mohammed

Pouyan Talebizadehsardari

Jasim M. Mahdi

Adeel Arshad

Adriano Sciacovelli


© 2020 To enhance the rate of heat transfer in phase change materials (PCM), high conductivity porous materials have been widely used recently as a promising method. This study introduces a novel approach for improving melting of PCM by incorporating uniform Joule heat generation with the porous structure compared to central heat generation. Different cases based on the heater-in foam configuration under the same heat generation rate are numerically verified and compared with the case of using the central heating element, which the heat transfer in the domain enhances by the porous medium. The effects of pore density and rate of heat generation are explored using the thermal non-equilibrium model to better deal with the interstitial heat transfer between the internal heat-generated-in-foam and the PCM. For the case with the central heating element, the effects of heater dimensions as well as the rate of heat generation are also investigated. The results show that the uniform heat generation from the porous structure can substantially reduce the melting time. Applying 100 kW/m3 for the rate of heat generation reduces the melting time by 21% compared with the best case of the localised heater. Meanwhile, applying higher pore-density foam does not bring any significant effect due to the uniform distribution of the heat generation. The results also show a small effect of localized heater size on the melting time with the same rate of heat generation density from the porous structure. However, for an identical volumetric heat source power of the localised heater, the rate of heat generation per volume is more effective compared with the heating element size due to the presence of the porous medium.

Journal Article Type Article
Acceptance Date Aug 5, 2020
Online Publication Date Aug 11, 2020
Publication Date Oct 1, 2020
Deposit Date Sep 8, 2020
Publicly Available Date Aug 12, 2021
Journal Journal of Energy Storage
Electronic ISSN 2352-152X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 31
Article Number 101747
Keywords Internal heat generation, Joule heating, Latent heat storage, Porous medium, Central heating element, Thermal non-equilibrium model
Public URL
Publisher URL


You might also like

Downloadable Citations