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Phase-change Temperature of Micro-encapsulated Phase-change Material  

최은수 (명지대학교 기계공학과)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.14, no.2, 2002 , pp. 168-174 More about this Journal
Abstract
In order to obtain a new heat transfer fluid having a high thermal capacity, micro-capsules of a phase-change material can be a successful candidate to be added into water. In this study, 25, 50, 100, and $200\mu$m diameter micro-encapsulated Lauric acids were tested by a differential scanning calorimeter. The Lauric acid itself had a single freezing curve, but the micro-encapsulated Lauric acid had double freezing curves. The second freezing dominated for $25\mu$m diameter Lauric acids. But the first freeing energy became big as the size of the capsule increased.
Keywords
Lauric acid; Micro-encapsulated phase-change material; Convective heat transfer; Differential scanning calorimeter; Undercooling; Melting; Freezing;
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