Comparison of phase change slurries: Physicochemical and thermal properties
Giró Paloma, Jessica
Fernández Renna, Ana Inés
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Phase change slurries (PCS) consist on a carrier fluid binary system, where water is mostly used as continuous phase and micro-encapsulated phase change materials (MPCM) are used as dispersed phase. PCS are used in Thermal Energy Storage (TES) for building applications, combining the latent heat capacity of the MPCM with the sensible heat capacity of the carrier fluid, and at the same time giving the PCM pumpable properties. In this study, two PCS samples are compared and characterized, the commercial Micronal® DS 5007 X from BASF and a laboratory made PCS28. Thereby, in this paper thermal stability is studied by using thermogravimetrical analysis (TGA) and the main components of the MPCM have been studied using Fourier transformed infrared spectroscopy (FT-IR). Moreover, TGA coupled with FT-IR is used to study deeply the thermal decompositions of the PCS microcapsules and products derived thereof. Finally, differential scanning calorimetry (DSC) is performed to study the melting enthalpy and the melting temperature range of the phase change material (PCM). This paper concludes that both types of PCS have good potential from thermal energy storage purposes such as solar space heating applications.
Is part ofEnergy, 2015, vol. 87, p. 223-227
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Giró Paloma, Jessica; Oncins, Gerard; Barreneche Güerisoli, Camila; Martínez, Mònica; Fernández Renna, Ana Inés; Cabeza, Luisa F. (Elsevier, 2013)Microencapsulated phase change materials (MPCM) are well known in advanced technologies for the utilization in active and passive systems, which have the capacity to absorb and slowly release the latent heat involved in ...
Giró Paloma, Jessica; Barreneche Güerisoli, Camila; Delgado, Mónica; Martínez, Mònica; Fernández Renna, Ana Inés; Cabeza, Luisa F. (Elsevier, 2014)The present work studies a Phase Change Slurry (PCS) as a proposed Thermal Energy Storage (TES) medium. Microencapsulation is an advanced technology to implement PCMs (Phase Change Material) avoiding leakage from ...
Giró Paloma, Jessica; Barreneche Güerisoli, Camila; Martínez, Mònica; Sumiga, Bostjan; Fernández Renna, Ana Inés; Cabeza, Luisa F. (Elsevier, 2016)Thermal energy storage (TES) is one method to accumulate thermal energy. In TES, latent heat storage using phase change materials (PCM) has attracted a lot of interest, recently. Phase change slurries (PCS) consist on a ...