Caracterización física y mecánica de placas de yeso con materiales de cambio de fase incorporados para lmacenamiento de energía térmica mediante calor latente

Abstract

This article describes the design and manufacture of agypsum board which, despite its 45% wt content ofphase change materials, meets the minimum physical andmechanical requirements laid down in the legislation on gypsum plasters (Spanish and European standard UNE EN 13279 and Spanish specifications for gypsum acceptance, RY 85). Under this design, a one-metre square, 1.5-cm thick board contains 4.75 kg of PCM, much more than in any prior drylining (the maximum attained to date is 3 kg per m2). The mechanical and physical characteristics of this new composite were previously improved with twojoint-action additives: Polypropylene fibres and melamine formaldehyde as a dispersing agent. In the 20-30 °C temperature range, a gypsum board 1.5 cm thick containing this percentage of PCMs can storefive times more thermal energy than conventional plasterboard of the same thickness, and the same amount of energy as half-foot hollow brick masonry.