Composite salt-hydrate concrete system for building energy storage

The heat storage capacity and structural stability at multiple thermal cycling of the composite PCM concrete system that consists of sodium thiosulphate pentahydrate absorbed into porous concrete are investigated. The experimental results obtained for thermophysical and structural behaviors of the PCM composite system specify its limitations and applicability to phase-change thermal storage wallboard. (C) 1999 Elsevier Science Ltd. All rights reserved.