Journal of Biosystems Engineering

Korean Society for Agricultural Machinery (한국농업기계학회)
권호 표지
DOI QR코드

DOI QR Code

Cold Thermal Energy Storage Characteristics of Spherical PCM Capsule

상변화물질을 충진한 구형 캡슐의 축냉 특성

  • Published : 2008.10.25
Download PDF
⟨ Previous Next ⟩

Abstract

The freezing characteristics of two kinds of phase change materials (PCM) encapsulated in a spherical container were investigated with various cooling air temperatures and velocities. The super cooling and solidification time of PCM were highly affected by cooling air temperature and velocity. The experimental equations are derived to express total solidification time of the PCM in terms of Nusselt number and dimensionless temperature.

Keywords

References

  1. Kousksou, T., J. P. Bedecarrats, J. P. Dumas and A. Mimet. 2005. Dynamic modeling of the storage of an encapsulated ice tank. Applied Thermal Engineering 25:1534-1548 https://doi.org/10.1016/j.applthermaleng.2004.09.010
  2. Laybourn, D. R. 1988. Thermal energy storage with encapsulated ice. ASHRAE Trans. 94:1971-1988
  3. Levent Bilir and Zafer Ilken. 2005. Total solidification time of liquid phase change material enclosed in cylinderical/spherical containers. Applied Thermal Engineering 25:1488-1502 https://doi.org/10.1016/j.applthermaleng.2004.10.005
  4. Saitoh, T. and K. Hirose. 1986. High-performance phasechange thermal energy storage using spherical capsules. Chem. Eng. Comm. 41:39-58 https://doi.org/10.1080/00986448608911711
  5. Whitaker, S. 1972. Forced convection heat transfer correlations for flow in pipes, past flat plates, single cylinders, single spheres, and for flow in packed beds and tube bundles. AIChE Journal 18(2):361-371 https://doi.org/10.1002/aic.690180219
  6. 강한기. 2000. 빙축열 냉방시스템의 선정과 설계. 공기조화.냉 동공학회 2000하계학술발표논문집. pp. 853-868
  7. 정갑용, 조금남. 1994. 상변화 물질들을 이용한 구형캡슐 축냉 시스템의 축냉특성 연구. 공기조화.냉동공학회 1994동계학술 발표논문집. pp. 40-45