Measurement Methods of Latent Heat for PCM with Low Melting Temperature in Closed Tube

  • Hong Hiki (School of Mechanical and Industrial System Engineering, KyungHee University) ;
  • Kang Chaedong (Department of Mechanical Engineering, Chonbuk University) ;
  • Peck Jong Hyeon (Korea Institute of Industrial Technology)
  • Published : 2004.12.01

Abstract

Cycle test for developed phase change material (PCM) is necessary in order to assess the variation of latent heat, which decreases with time by deterioration. T-history method and measurement using heat-flux meter are appropriate for the cycle test in a tube filled with PCM because they do not need an extraction of sample in measuring heat of fusion. In the present study, these methods were applied to a PCM having a melting point below a room temperature, different to the past studies for PCMs melting above a room temperature. As a result of experiment using pure water as specimen, we can obtained rea-sonable values for heat of fusion.

Keywords

References

  1. Park, C. H., Choi, J. H. and Hong, H., 2001, Consideration on the T-history method for measuring heat of fusion of phase change materials, Korean J. Air-Conditioning and Refrigeration Eng., Vol.13, No.12, pp.1223-1229
  2. Zhang, Y. and Jiang, Y., 1999, A simple method, the T-history method, of determining the heat of fusion, specific heat and thermal conductivity of phase change materials, Measurement and Science Technology, Vol.10, pp.201-205
  3. Park, C. H., Peck, J. H., Kang, C. and Hong, H., 2003, Accuracy improvement for measurement of heat of fusion by T-history method, Korean J. Air-Conditioning and Refrigeration Eng., Vol.15, No.8, pp.652-660
  4. Saito, A., Okawa, S., Iwamoto, R. and Shintani, T., 1996, On the heat transfer characteristics of the thermal energy storage capsule in the heat removal process, using an inorganic hydrate, Trans. of JSME, Vol.62, No. 604, pp.4212-4219
  5. Holman, J. P., 1989, Experimental Methods for Engineers, 5th ed., McGraw-Hill, New York, pp.309-310
  6. SAREK, 2001, SAREK Handbook, 2nd ed.