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Status
Electronic Resource
Publication
May 1987
Language
Library's review
ABSTRACT:
The use of phase change material (PCM) as a medium for thermal energy storage for solar space heating and similar applications constitutes a practical alternative to sensible-heat storage in such media as rock or water. The objectives of the work reported were to define, formulate and
The use of phase change material (PCM) as a medium for thermal energy storage for solar space heating and similar applications constitutes a practical alternative to sensible-heat storage in such media as rock or water. The objectives of the work reported were to define, formulate and
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critically investigate a PCM based on calcium chloride hexahydrate derived from an existing large-scale industrial effluent, called "distiller blowoff" (DBO), from ICI's soda ash plant in Osborne, S.A. Calcium chloride hexahydrate (CCH) melts at 30°C with a heat of fusion close to 200 kilojoules per kilogram. Central to this work has been a calorimetric evaluation of this in which the long-term stability of formulated samples of prepared from DBO, was assessed in series of melt/freeze cycles unique method of continuous thermal analysis. Findings were positive, also in regard to the potential of practical applications, such as off- peak electric space heating and greenhouse temperature stabilization. More fundamental aspects of PCM storage, such as factors determining the enthalpies of fusion and crystallization, as well as supercooling characteristics, also were part of this study. Show Less