Thermal energy storage (TES) is a key technology to enhance the efficiency of energy systems as well as to increase the share of renewable energies. In this context, the present paper reports a literature review of the recent advancement in the field of adsorption TES systems. After an initial introduction concerning different heat storage technologies, the working principle of the adsorption TES is explained and compared to other technologies. Subsequently, promising features and critical issues at a material, component and system level are deeply analyzed and the ongoing activities to make this technology ready for marketing are introduced.

Està subjecte a una llicència de Reconeixement-NoComercial-SenseObraDerivada 4.

Està subjecte a una llicència de Reconeixement-NoComercial-SenseObraDerivada 4.0 de Creative Commons Assessment of the hydration/dehydration behaviour of MgSO4•7H2O filled cellular foams for sorption storage applications through morphological and thermo-gravimetric analyses

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This research is a study on the degradation effects caused by seawater absorption of isophthalic polyester and vinyl ester resin employed in boat manufacture. Physical and mechanical tests of the resins were performed before and after the degradation. The results highlighted that the polyester resin is more degraded than the vinyl one, due to a different network organization of the two materials. The polyester has a biphasic structure with a low compactness, so water diffusion into the bulk is highly favored. The degradation occurs mainly by the leaching of small molecules extracted from the resin bulk by the water. Damages (cracks, holes, blisters) are evident and the resin loses its mechanical performance. The vinyl network is monophasic and compact, so avoids the entry of water; its degradation occurs differently, by a hydrolytic surface erosion of resin layers. In this way, it retains its bulk better compared to the polyester one.