1LATENT HEAT STORAGE IN BUILDING MATERIALS

Abstract: Thermal storage by latent heat was recognised early as an attractive alternative to sensible heat storage in the building fabric. Early efforts in the development of latent heat storage used inorganic phase change materials (PCMs). However, in an effort to avoid some of the problems inherent in these, an interest was developed in the use of organic PCMs for this purpose. Recent research has looked at the incorporation of organic PCMs into porous building materials, creating functional and effective building elements which can effect significant energy savings. The rationale for using latent, as opposed to sensible heat storage in buildings is explained. Research to date into the use of PCMs in building materials is reviewed. Applications of PCM technology in the built environment are discussed. The main obstacles to the widespread use of PCM-impregnated building materials are discussed, and recommendations are given