Mechanical response evaluation of microcapsules from different slurries
Giró Paloma, Jessica
Fernández Renna, Ana Inés
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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 carrier fluid binary system composed of water as the continuous phase and microencapsulated PCM as the dispersed phase. In this paper, two PCS to be used for TES in buildings were studied: Micronal® DS 5007 X, from BASF company, and PCS28, a laboratory made sample. Both samples were characterized using particle size distribution and scanning electron microscopy, to observe the regular spherical microcapsules, the surface morphology, and the wall shell thickness of the microcapsules. Atomic force microscopy was used to analyze the force needed to break the PCS microcapsules, a critical parameter when the PCS are to be used in active pumpable systems, and also to evaluate the effective Young's modulus. Both samples were studied with the microcapsules broken and unbroken. The physicochemical and thermal properties were reported in a previous paper, and it can be concluded that both are proper candidates to be used in TES building heating and cooling applications, but the acrylic shell microcapsules present better breakage resistance to be used in active systems.
Is part ofRenewable Energy, 2016, vol. 85, p. 732-739
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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; Martínez, Mònica; Šumiga, Boštjan; Cabeza, Luisa F.; Fernández Renna, Ana Inés (Elsevier, 2015)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 ...
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 ...