Thermal analysis by DSC of Phase Change Materials, study of the damage effect
Article dans une revue avec comité de lecture
This paper deals with an experimental study of Phase Change Materials (PCMs) by DSC and focuses particularly on the influence of PCMs damage on their thermodynamic properties. First, different series of tests were performed on non-damaged PCMs (reference) using different masses and heating rates in order to optimize the choice of the experimental parameters used in DSC test. Accordingly, the specific heats at solid, liquid phases and the latent heats of PCMs were obtained. In addition, a fast approximate approach was suggested for the determination of the heat capacity of PCMs from a direct exploitation of the heat flux curves obtained by scanning PCMs at different heating rates. Finally, damaged PCMs were investigated and their thermal properties (specific heat and phase change enthalpy) were compared to the reference PCMs. It was shown from the obtained results that low heating rates are more suitable for PCMs scanning during DSC measurements in order to ensure a thermodynamic equilibrium within the sample. Furthermore, the results highlighted that damage of PCMs can lead to the loss of their specific heat capacity of about 28% compared to the non-damaged PCMs.
Showing items related by title, author, creator and subject.
Étude expérimentale et numérique pour la caractérisation thermique des bétons à changement de phase (BCP) Article dans une revue avec comité de lectureESSID, NESRINE; EDDHAHAK, Anissa; NEJI, Jamel (Lavoisier, 2017)In order to satisfy the technological challenges required by the new building concepts in the aim of improved performances in terms of durability, thermal comfort and respect for the environment, many research ideas have ...
Experimental and numerical analysis of the energy efficiency of PCM concrete wallboards under different thermal scenarios Article dans une revue avec comité de lectureESSID, Nessrine; EDDHAHAK, Anissa; NEJI, Jamel (Elsevier BV, 2021-10-30)This paper aims to investigate the energy efficiency of PCM-concrete wallboards using experimental and numerical approaches. First, a laboratory experimental work was performed to manufacture PCM-concrete mixtures with ...
Effect of the processing conditions on the viscoelastic properties of a high-RAP recycled asphalt mixture: micromechanical and experimental approaches Article dans une revue avec comité de lectureCHERIF, Rabeb; EDDHAHAK, Anissa; GABET, Thomas; HAMMOUM, Farhat; NEJI, Jamel (Taylor & Francis (Routledge), 2019)With the depletion of the virgin aggregates, many efforts have been oriented towards the recycling of the reclaimed asphalt pavement (RAP). However, quality control of the recycled product is required during the manufacture ...
Experimental and Numerical Thermal Properties Investigation of Cement-Based Materials Modified with PCM for Building Construction Use Article dans une revue avec comité de lectureESSID, Nessrine; EDDHAHAK-OUNI, Anissa; NEJI, Jamel (American Society of Civil Engineers, 2020)Due to their latent heat storage capacity, phase-change materials (PCM) incorporated in wallboards are an effective solution to reduce energy consumption inside buildings. This is achieved by incorporating PCM in construction ...
Prediction of the viscoelastic properties of an asphalt mixture: Micromechanical and experimental approaches(Article) [Prédiction des propriétés viscoélastiques des enrobés bitumineux Approches micromécaniques et expérimentales] Article dans une revue avec comité de lectureCHERIF, Rabeb; EDDHAHAK, Anissa; GABET, Thomas; HAMMOUM, Ferhat; NÉJI, Jamel (Lavoisier, 2017)The asphalt mixtures are composed of aggregates and asphalt used in the construction of the majority of roads. In order to ensure the sustainability of the infrastructures, the evaluation of the quality and the performances ...