Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
권호 표지

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

미립 피복 상변화 물질의 상변화 온도에 대한 연구

  • 최은수 (명지대학교 기계공학과)
  • Published : 2002.02.01
Download PDF
⟨ Previous Next ⟩

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

References

  1. J.Heat Transfer v.109 The melting process within spherical enclosures Roy S.K;Sengupta S
  2. Int.Comm.Heat Mass Transfer v.18 An evaluation of phase change microcapsules for use in enhanced heat transfer fluids Roys S.K;Sengupta S
  3. Int.J.Heat Mass Transfer v.34 no.3 Forced convection heat transfer in microencapsulated phase change material slurries: flow in circular ducts Charunyakorn P;Sengupta S;Roy S.K
  4. U.S.Patent 4,807,696 Thermal energy storage apparatus using enhanced phase change material Colvin D.P;Mulligan J.C
  5. U.S.Patent 4,911,232 Method of using a PCM slurry to enhance heat transfer in liquids Colvin D.P;Mulligan J.C
  6. 22nd International Conference on Environmental Systems Enhanced heat transfer in environmental systems using micro encapsulated phase change materials Colvin D.P;Mulligan J.C;Bryant Y.G