Thermal Storage and Thermodynamic Characteristics of Phase Change Materials Slurries

  • Kwon, Ki-Hyun (Department of Post-harvest Technology Research Center, Korea Food Research Institute) ;
  • Jeong, Jin-Woong (Department of Post-harvest Technology Research Center, Korea Food Research Institute) ;
  • Kim, Jong-Hoon (Department of Post-harvest Technology Research Center, Korea Food Research Institute) ;
  • Kim, Yong-Joo (Advanced R&D Center Machinery Technology Group, LS Mtron Ltd.) ;
  • Choi, Chang-Hyun (Department of Faculty of Life Science and Technology, Sungkyunkwan University)
  • Published : 2009.12.31

Abstract

This study was aimed at developing a low cost cold storage system for agricultural products. Three kinds of slurries: $K_1$, $K_2$, and $K_3$ slurries were developed using phase change materials (PCMs) such as tetradecane, octadecane, and sodium polyacrylate to maintain the desired temperature ranges. The slurries were manufactured by in-situ polymerization. Tetradecane and octadecane were capsulated in a core with melamine at the surface. The thermodynamic characteristics of the slurries were measured and analyzed. The latent heats of the $K_1$, $K_2$, and $K_3$ slurries at the melting points were 206.41, 186.88, and 147.91 kJ/kg, respectively. A transportable cold storage container was built to investigate the performance of the slurries as thermal storage media. The temperatures at the insides of the container could be maintained in the ranges of 0-5, 5-10, and $10-15^{\circ}C$ for more than 23, 27, and 60 hr with the $K_1$, $K_2$, and $K_3$ slurries, respectively.

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