THERMODYNAMIC BEHAVIOUR OF A HEATING SYSTEM BASED ON TWO PHASE-CHANGE MATERIALS

Abstract

The combined application of phase-change materials having low and high phase change temperature makes possible to increase the heating performance of the built-in latent energystorage heatings and at the same time to conserve their self-stability. Materials suitable for this purpose are: calcium chloride-hexahydrate and stearic acid. These materials are placed in elements made from tubes. Segregation was inhibited by the special design of electric heating plates situated in the elements. With an alternating disposition of various elements the fin effect can be well exploited. In the article data are presented to illustrate operational strategy and performance of the systems.