Fluidised beds as [`]coolth' stores

D. Kay, D. Highgate, C. Knight and S.D. Probert

Applied Energy, 1991, vol. 39, issue 3, 255 pages

Abstract: High energy-density thermal storage at low temperatures is feasible using phase-change materials. Thus an energy-storage device has been conceived which uses water-absorbing cross-linked polymers, known as hydrophilic materials. These were produced in the form of particles, which can be hydrated. Experiments have been carried out in which hydrophilic particles were fluidised in oil, using concentrations of hydrated particles up to 40% by weight. Energy storage, regularly well in excess of 50% of the theoretical capacity, has been achieved, although, for the maximum value, it was necessary to reduce the mixture temperature to about -8° C.

Date: 1991
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